A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.
Organic compounds that contain the -NCO radical.
Skin irritant and allergen used in the manufacture of polyurethane foams and other elastomers.
Oil obtained from seeds of Ricinus communis that is used as a cathartic and as a plasticizer.
A poly(A) binding protein that is involved in promoting the extension of the poly A tails of MRNA. The protein requires a minimum of ten ADENOSINE nucleotides in order for binding to mRNA. Once bound it works in conjunction with CLEAVAGE AND POLYADENYLATION SPECIFICITY FACTOR to stimulate the rate of poly A synthesis by POLY A POLYMERASE. Once poly-A tails reach around 250 nucleotides in length poly(A) binding protein II no longer stimulates POLYADENYLATION. Mutations within a GCG repeat region in the gene for poly(A) binding protein II have been shown to cause the disease MUSCULAR DYSTROPHY, OCULOPHARYNGEAL.
Organic salts of cyanic acid containing the -OCN radical.
Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Artificial substitutes for body parts and materials inserted into organisms during experimental studies.
A polyvinyl resin used extensively in the manufacture of plastics, including medical devices, tubing, and other packaging. It is also used as a rubber substitute.
Failure of equipment to perform to standard. The failure may be due to defects or improper use.
Polymers of organic acids and alcohols, with ester linkages--usually polyethylene terephthalate; can be cured into hard plastic, films or tapes, or fibers which can be woven into fabrics, meshes or velours.
The aggregate enterprise of manufacturing and technically producing chemicals. (From Random House Unabridged Dictionary, 2d ed)
Air pollutants found in the work area. They are usually produced by the specific nature of the occupation.
Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex.
Polymers of silicone that are formed by crosslinking and treatment with amorphous silica to increase strength. They have properties similar to vulcanized natural rubber, in that they stretch under tension, retract rapidly, and fully recover to their original dimensions upon release. They are used in the encapsulation of surgical membranes and implants.
Creation of an artificial external opening into the stomach for nutritional support or gastrointestinal compression.
Water-soluble low-molecular-weight polymers of acrylic or methacrylic acid that form solid, insoluble products when mixed with specially prepared ZnO powder. The resulting cement adheres to dental enamel and is also used as a luting agent.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Cell growth support structures composed of BIOCOMPATIBLE MATERIALS. They are specially designed solid support matrices for cell attachment in TISSUE ENGINEERING and GUIDED TISSUE REGENERATION uses.
General disorders of the sclera or white of the eye. They may include anatomic, embryologic, degenerative, or pigmentation defects.
Catheters designed to be left within an organ or passage for an extended period of time.
A milky, product excreted from the latex canals of a variety of plant species that contain cauotchouc. Latex is composed of 25-35% caoutchouc, 60-75% water, 2% protein, 2% resin, 1.5% sugar & 1% ash. RUBBER is made by the removal of water from latex.(From Concise Encyclopedia Biochemistry and Molecular Biology, 3rd ed). Hevein proteins are responsible for LATEX HYPERSENSITIVITY. Latexes are used as inert vehicles to carry antibodies or antigens in LATEX FIXATION TESTS.
Coating with a metal or alloy by electrolysis.
Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.
Material, usually gauze or absorbent cotton, used to cover and protect wounds, to seal them from contact with air or bacteria. (From Dorland, 27th ed)
Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.
Chronic inflammation and granuloma formation around irritating foreign bodies.
A family of gram-positive bacteria in the order Lactobacillales. Lactic acid is the main product of their carbohydrate metabolism.
A flavonol glycoside found in many plants, including BUCKWHEAT; TOBACCO; FORSYTHIA; HYDRANGEA; VIOLA, etc. It has been used therapeutically to decrease capillary fragility.
The planning of the furnishings and decorations of an architectural interior.
Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria.
A widely used industrial solvent.
A series of hydrocarbons containing both chlorine and fluorine. These have been used as refrigerants, blowing agents, cleaning fluids, solvents, and as fire extinguishing agents. They have been shown to cause stratospheric ozone depletion and have been banned for many uses.
Supplies used in building.
Lipid-laden macrophages originating from monocytes or from smooth muscle cells.
Compressed gases or vapors in a container which, upon release of pressure and expansion through a valve, carry another substance from the container. They are used for cosmetics, household cleaners, and so on. Examples are BUTANES; CARBON DIOXIDE; FLUOROCARBONS; NITROGEN; and PROPANE. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Exclusive legal rights or privileges applied to inventions, plants, etc.
A novel composition, device, or process, independently conceived de novo or derived from a pre-existing model.
Property, such as patents, trademarks, and copyright, that results from creative effort. The Patent and Copyright Clause (Art. 1, Sec. 8, cl. 8) of the United States Constitution provides for promoting the progress of science and useful arts by securing for limited times to authors and inventors, the exclusive right to their respective writings and discoveries. (From Black's Law Dictionary, 5th ed, p1014)
A condition in which the FORAMEN OVALE in the ATRIAL SEPTUM fails to close shortly after birth. This results in abnormal communications between the two upper chambers of the heart. An isolated patent ovale foramen without other structural heart defects is usually of no hemodynamic significance.
Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.
Organic compounds which contain tin in the molecule. Used widely in industry and agriculture.
Substances used to create an impression, or negative reproduction, of the teeth and dental arches. These materials include dental plasters and cements, metallic oxide pastes, silicone base materials, or elastomeric materials.
Procedure of producing an imprint or negative likeness of the teeth and/or edentulous areas. Impressions are made in plastic material which becomes hardened or set while in contact with the tissue. They are later filled with plaster of Paris or artificial stone to produce a facsimile of the oral structures present. Impressions may be made of a full complement of teeth, of areas where some teeth have been removed, or in a mouth from which all teeth have been extracted. (Illustrated Dictionary of Dentistry, 1982)
A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].
Form in which product is processed or wrapped and labeled. PRODUCT LABELING is also available.
Solutions used to store organs and minimize tissue damage, particularly while awaiting implantation.
The process by which organs are kept viable outside of the organism from which they were removed (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).
The process by which a tissue or aggregate of cells is kept alive outside of the organism from which it was derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).
Childbirth taking place in the home.
A genus of mosquitoes (CULICIDAE) frequently found in tropical and subtropical regions. YELLOW FEVER and DENGUE are two of the diseases that can be transmitted by species of this genus.

Evaluation of the efficacy of a polyurethane condom: results from a randomized, controlled clinical trial. (1/523)

CONTEXT: Condoms made of latex are not comfortable or appropriate for all consumers. Polyurethane condoms may provide a needed alternative. METHODS: In a double-masked study, 805 monogamous couples were randomized to use either the polyurethane condom or the latex condom for six months. Couples recorded the frequency of intercourse, of condom use and of breakage and slippage throughout the trial in coital diaries and in detailed reports on the first five uses. Breakage and slippage rates were determined, and typical-use and consistent-use pregnancy rates were calculated using life-table analysis, adjusted for use of emergency contraception. RESULTS: The six-month pregnancy rate during typical use (adjusted for use of emergency contraception) was 4.8% for the polyurethane condom and 6.3% for the latex condom. Similarly adjusted pregnancy rates during consistent use over six completed menstrual cycles--2.4% for the polyurethane condom and 1.1% for the latex condom--did not differ significantly. Clinical failure rates (including breakage and slippage occurring during either intercourse or withdrawal) were 8.5% for the polyurethane condom and 1.6% for the latex condom. In general, male participants were more satisfied with the latex condom, and users of latex were significantly less likely to drop out of the study for condom-related reasons than were users of polyurethane. CONCLUSIONS: Although polyurethane and latex condoms provide equivalent levels of contraceptive protection, the polyurethane condom's higher frequency of breakage and slippage suggests that this condom may confer less protection from sexually transmitted infections than does the latex condom.  (+info)

Toxicity of combustion products from burning polymers: development and evaluation of methods. (2/523)

Laboratory and room-scale experiments were conducted with natural and synthetic polymers: cotton, paper, wood, wool, acetate, acrylic, nylon, and urethane. Smoke and off-gases from single materials were generated in a dual-compartment 110-liter exposure chamber. Multicomponent, composite fuel loads were burned within a 100 m(3) facility subdivided into rooms. In chamber experiments, mortality depended on the amount of material burned, i.e., fuel consumption (FC). Conventional dose (FC)/mortality curves were obtained, and the amount of fuel required to produce 50% mortality (FC(50)) was calculated. With simple flame ignition, cotton was the only material that produced smoke concentrations lethal to rats; FC(50) values for cotton ranged from 2 g to 9 g, depending on the configuration of the cotton sample burned. When supplemental conductive heat was added to flame ignition, the following FC(50) values were obtained; nylon, 7 g; acrylic, 8 g; newsprint, 9 g; cotton, 10 g; and wood, 11 g. Mortality resulting from any given material depended upon the specific conditions employed for its thermal decomposition. Toxicity of off-gasses from pyrolysis of phosphorus-containing trimethylol propane-polyurethane foams was markedly decreased by addition of a flame ignition source. Further studies are needed to determine the possible relevance of single-material laboratory scale smoke toxicity experiments. Room-scale burns were conducted to assess the relative contributions of single materials to toxicity of smoke produced by a multicomponent self-perpetuating fire. Preliminary results suggest that this approach permits a realistic evaluation of the contribution of single materials to the toxicity of smoke from residential fires.  (+info)

Neutrophil chemotaxis on silicone and polyurethane surfaces. (3/523)

Silicone vascular catheters have a greater risk of infection and produce greater inflammation in vivo and greater complement activation in vitro than other vascular catheter polymer materials. This study investigated whether polymorphonuclear leukocyte (PMNL) chemotaxis under agarose on silicone surfaces is different than on polyurethane (PU). Glass slides were coated with silicone and PU by use of a constant-speed dipping apparatus. Chemotaxis (3 h) in response to (10-7 mL) FMLP, zymosan-activated serum, and fresh serum (100%) was greater on silicone than on PU (P<.05). Polyclonal antibody to C5a blocked >50% of the movement toward serum (P<.05). Serum in the PMNL well significantly decreased chemotaxis toward FMLP on silicone (P<.05) but not on PU. These findings suggest that excessive complement activation by silicone may interfere with chemotaxis, but further work is necessary to determine whether this is relevant to an increased risk of catheter-related infection.  (+info)

Neutrophil adhesion on polyurethanes preadsorbed with high molecular weight kininogen. (4/523)

Interaction of biomaterials with blood components including neutrophils is responsible for some of the clinical complications that have occurred in cardiopulmonary bypass, hemodialysis, and ventricular assist procedures. The possibility of inhibiting the initial adhesion of neutrophils to biomaterials has been studied extensively, but the problem remains unsolved. In this study, we investigated the effect of HK adsorption on polyurethane, a widely used component of extracorporeal and intracorporeal devices. HK and HKa were allowed to adsorb on 4 different charged polyurethanes: noncharged (PU), cationic (NR(4)), anionic (SO(3)), and zwitterionic (GPC) polyurethanes. The effect of kininogen adsorption on neutrophil adhesion, the surface density of the adsorbed kininogen, and the exposure of HK domains 3 and 5 (D(3) and D(5H)), which are responsible for the binding of HK to the neutrophil integrin alpha(m)beta(2) or Mac-1, were examined. On PU, NR(4), and SO(3), kininogen adsorption reached 80% of monolayer coverage when 100 pmol/mL or higher concentration of protein solutions were used. The NR(4) surface adsorbed the most kininogen along with a high exposure of D(3) and D(5H). The availability of D(3) and D(5H) allowed neutrophils to bind to the surface via the Mac-1 receptor; thus, on the NR(4) surface, adsorbed kininogens lost their antiadhesive property, which resulted in a high degree of neutrophil adhesion. Increasing Mac-1 expression by exposure to fMLP increased the neutrophil adhesion on this surface. In contrast, exposure of D(3) and D(5H) on SO(3) was significantly less, because HK binds to anionic surfaces with similar protein sequences used for cell binding. This low binding site exposure preserved the antiadhesive property of HK. GPC was resistant to neutrophil adhesion even in the absence of adsorbed kininogens because of its phosphorylcholine moiety. Thus, both SO(3) coupled with kininogen (or kininogen peptides) and GPC have the potential to markedly reduce neutrophil adhesion to biomaterial devices.  (+info)

Exposure to MDI during the process of insulating buildings with sprayed polyurethane foam. (5/523)

Buildings are often insulated with sprayed-in-place polyurethane foam in spite of the fact that few studies have been carried out on exposure levels to isocyanates during the spraying process. This paper is meant to provide new data on personal exposure to methylene-bis (4-phenylisocyanate) (MDI) while dwellings and office buildings are being insulated with polyurethane foam. An impinger using a 1-(2-methoxyphenyl)piperazine toluene solution as absorbent was used to take personal samples for the sprayer and helper during indoor and outdoor applications. The analytical results show that the levels of exposure were significant, especially for the sprayer, with values of up to 0.077 mg m-3 and 0.400 mg m-3 during outdoor and indoor applications, respectively. The helper's exposure was always lower.  (+info)

In vitro cytotoxicity of textile paint components linked to the "Ardystil syndrome". (6/523)

The spraying of a paint formula (Acramin F system) had led to severe pulmonary disease in textile printing sprayers in Spain and Algeria (Ardystil syndrome). In order to elucidate the underlying mechanisms of the toxicity of this paint and its main polymeric components, Acramin FWR, Acramin FWN, Acrafix FHN, and Acramoll W, we have undertaken studies using a battery of different cell-types and assessing in vitro cytotoxicity by measuring LDH leakage. This study shows that, as in in vivo studies, the three polycationic paint components, Acramin FWR (a polyurea), Acramin FWN (a polyamide-amine), and Acrafix FHN (a polyamine) exhibited considerable cytotoxicity (LC50 generally below 100 microg/ml for an incubation of 20-24 h) in vitro, while Acramoll W, which is not a polycation, was almost non-toxic (in the concentration range tested). The cytotoxicity was comparable in primary cultures of rat and human type II pneumocytes and alveolar macrophages as well as in the pulmonary cell line A549 and the hepatic cell line HepG2. In human erythrocytes, the toxicity was less pronounced. We speculate that the multiple positive charges play an important role in the toxic mechanism. It is concluded that Acramin FWR and Acramin FWN have similar intrinsic toxicity and that these polymeric compounds, which have no irritant properties or systemic toxicity when given orally, exert a high, unexpected, degree of cytotoxicity.  (+info)

In vivo analysis of dynamic tensile stresses at arterial end-to-end anastomoses. Influence of suture-line and graft on anastomotic biomechanics. (7/523)

OBJECTIVE: to determine the influence of an anastomotic suture line and a graft on dynamic tensile stresses of vascular end-to-end anastomoses in vivo. MATERIAL AND METHODS: the abdominal aorta of twelve 35-kg pigs was used as an experimental model. Simultaneous recordings of internal arterial diameter and pressure were performed on each pig at 3 successive stages: (1) The genuine artery (REF), (2) artery-artery (A-A) and (3) graft-artery (G-A) anastomosis at 1-mm increments in the immediate perianastomotic area. Thereby, RD (relative distension), CC (compliance coefficient), E(p)(dynamic pressure-strain elastic modulus) and hysteresis loop areas could be calculated for every measuring point. RESULTS: the graft was significantly stiffer than REF. A-A and G-A anastomoses were significantly less compliant than REF. Maximum E(p), minimum CC and hysteresis loop areas were found at the anastomotic line due to minimum anastomotic RD. Downstream of the G-A anastomosis, the RD, CC, E(p)and loop areas were significantly different from REF, but significantly different from A-A. CONCLUSION: an animal model for acute studies of mechanical properties of vascular end-to-end anastomoses was developed. The main determinant for anastomotic biomechanics was the suture-line itself.  (+info)

Prenatal toxicity of inhaled polymeric methylenediphenyl diisocyanate (MDI) aerosols in pregnant wistar rats. (8/523)

Mated Wistar rats, 25/group, were exposed to polymeric methylenediphenyl diisocyanate (MDI) aerosol of respirable size for 6 h/day, on gestational days (gd) 6 through 15, at 0, 1, 4, and 12 mg/m3. Maternal clinical signs, body weights, and feed and water consumption were measured throughout gestation. At scheduled sacrifice on gd 20, maternal body, gravid uterine, liver, and paired lung weights were documented. Corpora lutea were counted, implantation sites were identified: resorptions, dead and live fetuses, and placentas were weighed. All live fetuses were counted, sexed, weighed, and examined for external alterations; approximately 50% of the live fetuses/litter were preserved in Bouin's fixative and examined for visceral alterations, and the remaining live fetuses/ litter were cleared and stained with alizarin red S and examined for ossified skeletal alterations. Maternal toxicity was observed at 12 mg/m3, including mortality (2 of 24 pregnant), damage to the respiratory tract, reduced body weights and weight gain, reduced liver and increased lung weights, and reduced gravid uterine weight (the last not statistically significantly different from the control value). Developmental toxicity was also observed at 12 mg/m3, including reduced placental and fetal body weights and an increased incidence of fetal skeletal variations and skeletal retardations. There was no evidence of maternal or developmental toxicity at 1 or 4 mg/m3. The no observed adverse effect concentration for maternal and developmental toxicity was therefore 4 mg/m3. There were no treatment-related teratogenic effects at any concentrations evaluated.  (+info)

The present invention provides rigid polyurethane foam comprising thermally expandable particles which are displaced to penetrate a strut of a structure of the polyurethane foam so that the particles are exposed into one or more cells of the polyurethane foam during foaming. Further, the rigid polyurethane foam can comprise hollow thermally expanded particles which are displaced to penetrate a surface of a cell in the polyurethane foam so that the particles are exposed into one or more cells of the polyurethane foam during foaming. The rigid polyurethane of the present invention can have excellent insulating properties.
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iCrowd Newswire - Jul 16, 2020. Closed Cell Polyurethane Foam Market size is forecast to reach $934.67 million by 2025, after growing at a CAGR of 7.52% during 2020-2025. Closed Cell Polyurethane Foam due to its versatility, easy adaptability for freedom of design and affordability is used in various end use industries such as electronics and marine industry. With the increasing use of polyurethane foam in the automotive industry owing to their excellent features such as ease of installation, minimal weight, fire resistance, thermal resistance, and low cost, the demand for Closed Cell Polyurethane Foam Industry is estimated to rise in the forecast period.. Type - Segment Analysis. Ethylene Propylene Diene Monomer (EDPM) is extensively used in Closed Cell Polyurethane Foam Market due to the excellent electrical insulation and water resistance properties. EPDM does not deteriorate over time due to its chemical composition, and thus has an impressive lifetime relative to other materials. Ethylene ...
June 4, 1968 Filed Aug. 31, 1964 Cub/c fee/air per mlnu 1 c V/ZSC osi/y sfar/ing mafenals, 6,0 8 A. E. ROSECRANS ETAL METHOD FOR MAKING POROUS POLYURETHANE FOAMS 2 Sheets-Sheet 1 7 par-*5 wafer IOpar/S wafer 3o 40 5o 60 10 80 .90 I00 Porvs by weigh? offrich/orof/uorom e/lvone INVENTORS 91T QR E Y, June 4, 1968 A. s. ROSECRANS ETAL METHOD FOR MAKING POROUS POLYURETHANE FOAMS Filed Aug. 31, 1964 2 Sheets-Sheet 2 v/scos/fy, cps Top I INVBNTORS. 4 fll/reaf. Rosecrans Calvin/V. 60 aers ATTORNEY United States Patent 3,386,927 METHOD FOR MAKING POROUS POLYURETHANE FOAMS Alfred E. Rosecrans and Calvin N. Goeders, Midland, Mich, assignors to The Dow Chemical Company, Midland, Mich, a corporation of Delaware Filed Aug. 31, 1964, Ser. No. 393,046 Claims. (Cl. 2602.5) This invention concerns a method for making open cell polyurethane foams of high porosity. It relates more particularly to a method for making flexible open cell polyurethane foams having a predetermined porosity and pertains to the use of ...
1965 w. SCHEERMESSER 3,222,697 PROFILED POLYURETHANE FOAM ARTICLES OF MANUFACTURE Filed June 29, 1956 6 SheetsSheet 1 I N VE N TOR Wf/fie/m JMee/mexer mww w ATTORNEYS Dec. 14, 1965 PROFILED Filed June 29, 1956 w. SCHEERMESSER 3,222,697 POLYURETHANE FOAM ARTICLES OF MANUFACTURE 6 Sheets-Sheet 2 IN VENTOR ATTORNEYS D 1955 w. SCHEERMESSER 3,222,697 PROFILED POLYURETHANE FOAM ARTICLES OF MANUFACTURE Filed June 29, 1956 6 Sheets-Sheet 5 I N VEN TOR M/fie/m idea/messy BY w w ATTORNEYS 1965 w. SCHEERMESSER 3,222,697 PROFILED POLYURETHANE FOAM ARTICLES OF MANUFACTURE Filed June 29, 1956 6 Sheets-Sheet 4 INVENTOR VIM/Wm jafieermesser ATTORNEYS Dec. 14, 1965 w. SCHEERMESSER 3,222,697 PROFILED POLYURETHANE FOAM ARTICLES OF MANUFACTURE Filed June 29, 1956 6 Sheets-Sheet 5 INVENTOR ATTORNEYJ United States Patent O M 3,222,697 PRUFILED PGLYURETHANE FGAM ARTICLES F MANUFAtITURlE Wilhelm Scheermesser, Earl Honnef, Germany, assignor to Mobay Chemical Company, a corporation of Deliaware Filed June 29, 1956, Ser. ...
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Global Hybrid Non-Isocyanate Polyurethanes (HNIPU) market report studies the market situation and outlook represents the global Hybrid Non-Isocyanate Polyurethanes (HNIPU) market size (value and volume) and Share by companies, type, application, and region. The widespread Global Hybrid Non-Isocyanate Polyurethanes (HNIPU) trends and opportunities are also taken into consideration in Hybrid Non-Isocyanate Polyurethanes (HNIPU) industry study Hybrid Non-Isocyanate Polyurethanes (HNIPU) Market report focus on the following section is to analyze the Hybrid Non-Isocyanate Polyurethanes (HNIPU) industry by adoption among various segments; the primary product types covered under the scope of the report.. This Hybrid Non-Isocyanate Polyurethanes (HNIPU) market report is a complete analysis of the Hybrid Non-Isocyanate Polyurethanes (HNIPU) market based on primary and secondary in-depth analysis. The scope of the Hybrid Non-Isocyanate Polyurethanes (HNIPU) market report includes global and regional ...
Other. The Polyurethane Resin Industrial Coatings report provides the past, present and future industry trends and the forecast information related to the expected Polyurethane Resin Industrial Coatings sales revenue, Polyurethane Resin Industrial Coatings growth, Polyurethane Resin Industrial Coatings demand and supply scenario. Furthermore, the opportunities and the threats to the development of Polyurethane Resin Industrial Coatings market are also covered at depth in this research document.. Initially, the Polyurethane Resin Industrial Coatings manufacturing analysis of the major industry players based on their company profiles, annual revenue, sales margin, growth aspects is also covered in this report, which will help other Polyurethane Resin Industrial Coatings market players in driving business insights.. To Download A Sample Of The Report Click Here: http://qyresearch.us/report/global-polyurethane-resin-industrial-coatings-market-2017/81240/#requestForSample. Key Emphasizes Of The ...
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Objective: To compare the incidence of nonelective removal of single-lumen silicone and dual-lumen polyurethane percutaneously inserted central catheters (PICCs).. Study Design: A prospective cohort study was conducted with neonates in whom 247 PICC lines had been successfully inserted. Patients were assigned to either the single-lumen silicone group or the dual-lumen polyurethane group and nonelective removal incidence was compared using a logistic regression model.. Results: Incidence of nonelective removal in dual-lumen polyurethane PICCs (n =91) was 48.3% versus 34% in single-lumen silicone PICCs (n =156). Thus, dual-lumen polyurethane catheters had a significantly increased chance of nonelective removal compared with single-lumen silicone PICCs (P =.004). The most usual complication in dual-lumen polyurethane PICCs was suspected catheter-related bloodstream infection; in single-lumen silicone PICCs it was external rupture.. Conclusions: Dual-lumen polyurethane PICCs are associated with ...
Spray polyurethane foam is an insulating foam plastic thats sprayed on as a liquid that expands many times over. Thanks to specialized equipment, application techniques can achieve dramatically different results. The same raw materials, for example, can be made fairly rigid and soft to the touch. They can also be made into roofing foam thats resistant to foot traffic and water. Spray polyurethane foam doesnt just provide an air barrier and method of moisture control -- it also can offer high levels of R-value. Spray polyurethane foam can be used to insulate roofing, air barriers, walls, ceilings, attics and basements. Its effective at low and high temperatures and can provide a more ideal environment for your homes ventilation system so that it functions more efficiently.. ...
The invention relates high-breathability superfine fiber polyurethane suede synthetic leather. The high-breathability superfine fiber polyurethane suede synthetic leather comprises base cloth prepared from indefinite island-shaped dual-compound sea-island fibers and a waterborne polyurethane sizing agent coated on the base cloth. The high-breathability superfine fiber polyurethane suede synthetic leather is prepared by the following steps of firstly, carrying out heat setting on the base cloth, then impregnating the base cloth in the impregnation polyurethane sizing agent, then coating at least one layer of coating polyurethane sizing agent on the surface of the impregnated base cloth, solidifying and washing to prepare a synthetic leather semi-finished product, extracting and reducing the synthetic leather semi-finished product by using a solvent capable of dissolving sea components in the sea-island fibers, and finally finishing the reduced synthetic leather semi-finished product so as to obtain
Digital ulcers (DUs) represent a severe and common complication occurring in patients affected by Systemic Sclerosis (SSc), with a consistent impact on the quality of life and often resulting in longer hospitalization than unaffected patients. Conventional treatment of SSc ulcers consists of both topical and systemic (oral or intravenous) pharmacological therapies. Several surgical options are also available, but there is overall a lack of official guidelines or recommendations. The aim of this study was to evaluate the efficacy of a novel local therapy based on polyurethane foam dressings, namely the Highly Hydrophilic Polyurethane Foam (HPF), in addition to the conventional pharmacological treatment, in a cohort of 41 SSc patients with at least one active ulcer. Our results showed that the addition of HPF to the conventional treatment based on systemic drugs induced i) a significant reduction in the number of active DUs (p=0.0034); ii) a significant reduction of the mean duration of ...
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. Global Polyurethane Market 2016-2021 Trends & Forecast Report, Consistent with our stated policy of making available the best research and analysis report - Buy Now or inquire about this report online.. The report provides key statistics on the market status of the Polyurethane manufacturers and is a valuable source of guidance and direction for companies and individuals interested in the industry.. Complete report on Polyurethane market spreads across 108 pages profiling 09 companies and supported with 122 tables and figures @ http://www.deepresearchreports.com/contacts/inquiry.php?name=302974 . Key Companies Analysis: - Bayer, Basf, Dow, Huntsman, NPU, Mitsui, Huafon, COATING, WANHUA profiles overview.. The Global Polyurethane Industry provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Polyurethane market analysis is provided for the ...
All closed-cell polyurethane foam insulation made today is produced with a non-CFC (chlorofluorocarbon) gas as the foaming agent. Some polyurethane foam combines with a HCFC gas instead. These types dont insulate as well as insulation made with a CFC gas, but the non-CFC gas is less destructive to the ozone layer. However, these foams still have an aged R-6.5 per inch thickness. Their density is generally 2.0 lb/ft3 (32.0 kilograms per cubic meter [kg/m3]). There also are low-density open-cell polyurethane foams (0.5 lb/ft3 [8 kg/m3]). These foams are similar to conventional polyurethane foams, but are more flexible. Some low-density varieties use carbon dioxide (CO2) as the foaming agent ...
A polyurethane structure prepared by the comminution of a flexible polyurethane foam in the presence of a compatible protective cooling fluid.
Polyurethane Pneumatic Tubing Product Types. If inflexibility, cracks, and punctures have ever plagued your tubing, then its time for you to switch to polyurethane. PUR tubing provides excellent flexibility and resists the kinds of damage that can lead to dangerous leaks.. Fre-Thane® Polyurethane TubingOur Fre-Thane® PU tubing is available in a wide variety of colors, sizes and hardness values. The hardness value of PUR tubing is measured by the p...Polyurethane Tubing Product TypesIf inflexibility, cracks, and punctures have ever plagued your tubing, then its time for you to switch to polyurethane. PUR tubing provides excell...Fre-Thane® PU Tubing Features & BenefitsFreelin-Wades PUR tubing exhibits a high resistance to abrasion, while being highly flexible and kink resistant. Fre-Thane® will stretch and flex...Get price ...
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Polymeric Foams (Polyolefin Foams, Polystyrene Foams, Polyurethane Foams, PVC Foams) Polymeric Foams (Polyolefin Foams, Polystyrene Foams, Polyurethane Foams, PVC Foams) This report analyzes the worldwide markets - Market research report and industry analysis - 11703787
Presented work was undertaken to elaborate a repeatable method of fabrication of a hybrid (coated with livin cells) material that could be used in various blood circulatory support devices, e.g. artificial heart and its parts or vessels implants. The work involves chemical modification of already existing synthetic polymer - polyurethane - with evaluation after each step and cultivation of human endothelial cells on final material surface in order to indicate cells adhesion, growth and proliferation. A three-step chemical method of immobilizing collagen onto polyurethane surface was proposed. Final materials were non-toxic to endothelial cells and promoted cells proliferation and growth. Also, there was an expected change in cells morphology due to interaction with collagen. The whole process does not involve harsh conditions or complex equipment, therefore it is suitable to be utilized on a large scale.
Sustainability by Converting Waste Polyurethane Foam into Superior Polyurethane Urea Coatings. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Title: USE OF PENTAETHYLENE HEXAMINE IN THE PRODUCTION OF POLYURETHANE SYSTEMS Number/Link: WO2015/071065 (German) Applicant/Assignee: Evonik Publication date: 21-05-2015 Gist: Use of pentaethylenehexamine to reduce aldehyde emissions Why it is interesting: As mentioned in previous posts, the reduction of formaldehyde and acetaldehyde emissions from polyurethane foams remains a pressing environmental issue. According to this patent application the problem…
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Polyurethane foam functionalized with potassium O-ethyldithiocarbonate was evaluated as an extractant material for Hg(II). Several parameters such as pH, mass amount and extraction time were studied. Under the best conditions, a 86% of mercury extraction was achieved. Dubinin?Radushkevich isotherm model indicated that the nature of interaction between functionalized foam and Hg(II) is chemical. Regarding interferents, metallic ions Ag(I) and Sn(IV) have a significant influence on the Hg extraction percentage. In the case of silver, it had a synergistic effect increasing the percentage of mercury due to a metallophilic interaction. Also, once the mercury was extracted, its leaching from the functionalized polyurethane foam was evaluated by means of two sequential extraction procedures. In this way, the functionalized foam emerges as a good material for the removal and confinement of chemical species. Obtained results show that mercury extraction is successful even from complex solution and that ...
Article Adsorption of fluoride from water by surface-functionalized polyurethane foam. Surface-functionalized polyurethane foam (SPUF) showed an exceptionally high adsorption potential for defluoridation of drinking water. Kinetic experiments of fluo...
A polyurethane foam can be made from waste cellulosic products such as papermill sludge, wood chips, wood particles, sawdust, waste paper or cardboard scraps. The polyurethane foam is made by reacting together a polyisocyanate, a catalyst, and a cellulosic material.
J. Saunier, J.M. Herry, C. Marliere, M. Renault, M.-N. Bellon-Fontaine, et al.. Modification of the bacterial adhesion of Staphylococcus aureus by antioxidant blooming on polyurethane films. Materials Science & Engineering. C, Materials for Biological Applications, 2015, 56, pp.522-531. 〈hal-01569038〉 ...
12 Alipay The polyoxypropylene polyol can be prepared by subjecting an alkylene oxide to ring-opening addition reaction to a compound having at least two active hydrogen atoms, which is a starting material, and adding ethylene oxide to the molecular terminal of the resulting compound in a block form. Color Ethylene From the viewpoint of environmental protection, it is desirable to use water alone. Since the polyoxypropylene glycol has a long oxyalkylene chain, it effectively functions as a soft segment in the polyurethane foam, thereby imparting excellent elongation properties and flexural properties to a resulting polyurethane foam. â More concretely, there can be included a process comprising the step of reacting the polyol components with the polyisocyanate compound using a blowing machine such as an automatically mixing and injecting foaming machine or an automatically blending and injecting foaming machine to form a polyurethane foam, the temperature of the polyol components being ...
Polyurethane is relatively biocompatible, transparent, colourless, and autoclavable. In the field of ophthalmology, a polyurethane keratoprosthesis was well tolerated by rabbit eyes even 1 year after implantation. Unlike poly(methylmethacrylate) (PMMA), polyurethane is autoclavable; thus, it has been suggested as a potential material for intraocular lenses and keratoprostheses.16 Because of these encouraging results, we believed that polyurethane could be safely used as an extraocular physical barrier to adhesion formation. There have been no previous reports on the use of this material for delayed adjustable strabismus surgery. The ideal drug release devices for our purpose should fulfil the following criteria.22 Firstly, the device should provide a sustained and relatively uniform therapeutic concentration of the drug in a reliable and predictable fashion over an adequate period of time. Secondly, the device should be easily implantable or injectable, but must remain stable and non-migratory ...
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F1839-08(2016) Standard Specification for Rigid Polyurethane Foam for Use as a Standard Material for Testing Orthopaedic Devices and Instruments
Reticulated polyurethane foam is created by removing cell membranes through one of two methods in the polyurethane manufacturing process. The first method is chemical etching or quenching. The second method is called thermal reticulation or zapping ...
Hazards: Avoid contact with the liquid and vapor of the chemicals in this demonstration.. Chemicals and Solutions: 100 ml of polyurethane a (toluene diisocyanate plus extras) 136 ml of polyurethane b (gycerol plus extras). Materials: large plastic beaker (2 L capacity). stirring rod. Procedure: Mix components a and b in the beaker. Stir until the mixture starts to foam.. Hint: Discussion: The polyurethane forms when an isocyanate group (R-N=C=O) from toluene diisocyante reacts with a hydroxyl group from glycerol forming an ester-like bond. The reaction can proceed in three directions since all three hydoxyl groups of the triol can react and both isocyanate groups can react.This leads to a large molecule that is rigidly held into a three dimensional structure.. The foaming is caused by the small amount of water that is present. The water decomposes isocyanate: R-N=C=O + H2O ---, RNH2 + CO2. ...
Degradable bone graft substitute for large-volume bone defects is a continuously developing field in orthopedics. With the advance in biomaterial in past decades, a wide range of new materials has been investigated for their potential in this application. When compared to common biopolymers within the field such as PLA or PCL, elastomers such as polyurethane offer some unique advantages in terms of flexibility. In cases of bone defect treatments, a flexible soft filler can help to establish an intimate contact with surrounding bones to provide a stable bone-material interface for cell proliferation and ingrowth of tissue. In this study, a porous filler based on segmented polyurethane incorporated with poly l-lactic acid was synthesized by a phase inverse salt leaching method. The filler was put through in vitro and in vivo tests to evaluate its potential in acting as a bone graft substitute for critical-sized bone defects. In vitro results indicated there was a major improvement in biological response,
Close The Infona portal uses cookies, i.e. strings of text saved by a browser on the users device. The portal can access those files and use them to remember the users data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser. ...
Molded polyurethane, silicone, high impact epoxy components, die cutting, precision plastics & metal machining. Molded polyurethane, silicone, high impact epoxy components, die cutting and CO2 Laser Cutting.. Custom Seal & Rubber Products, Inc. is located in Mount Morris, IL and is a supplier of Silicone Molding, Polyurethane Molding, Urethane Molding.
COVID-19 Analysis:. The disturbances caused by the novel Coronavirus is being witnessed by all the industries. Some of the major interruptions include cancellations of flights, disruptions in logistics, reduced demand and production, delayed supply of essential raw materials, rejected delivery of key components to the end use industries, increased panic among consumers, higher pressure on healthcare industry, and more. Several key regions are also experiencing prolonged lockdown due to speedy spread of the virus. Also businesses are witnessing many disturbances including delayed product launches, interruptions in innovations, and less working population in work areas. Nevertheless, researchers have mentioned about the strategies adopted by key vendors during pandemic and other planning and activities to alleviate the Hot Melt Polyurethane Adhesive market post-pandemic.. The Hot Melt Polyurethane Adhesive market discusses details on the leading product type. The Hot Melt Polyurethane Adhesive ...
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The present invention is a polyurethane dispersion that can be used to prepare polyurethane polymers which have moisture resistant properties. Moisture resistant polymers of the present invention are obtained by preparing the polymers from a polyurethane dispersion using a prepolymer formulation which includes an aliphatic mono, di or polyhydroxy compound which has an aliphatic side chain substituent which contains from 5 to 30 carbon atoms.
This study investigates if surface modification, in conjunction with thermal transfer, will improve the adhesion of polyurethane films onto a wool fabric surface for sportswear application. Atmospheric pressure plasma and hydrogen peroxide treatments were used to enhance the surface energy of the wool fabric. Polyurethane polymer films were transferred onto the surface of treated fabrics using a hot press method. The effectiveness of different treatments to improve the adhesion of the film onto the wool surface was tested by washing fastness and the stretch recovery of polyurethane bonded fabrics. The results confirmed improvement on adhesion properties of wool bonded fabrics after different treatments ...
Coarse, aqueous dispersions of polyurethanes that sediment but are capable of being redispersed are prepared from 40 to 99.5 percent by weight of a polyurethane polymer having a molecular weight greater than 5,000 and preferably above 20,000 which is free of salt-forming groups and from about 0.5 to about 60 percent by weight of a polyurethane polymer containing saltforming groups. Salt formation is permitted to occur until 0,0007 to 0,011 equivalent percent has taken place and the mixture is then dispersed at least in a quantity of water such that the solids content is 60 percent.
4 Pcs; breathable stretchable black safety face mask for polyurethane mouth mask protective anti formaldehyde 2mm thick stretchable Polyurethane material. 3D Seamless fashion mask. 4 pieces included. Recycled product bag; the mask can be put back into the bag after use. Carry this product, please divide the opposite side, do not wear back, anti-external will be stick dust powder direct contact between mouth and nose will be detrimental to polyurethane mouth mask protective anti ...
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Title:Polyurethane Foams Reinforced with Biobased Materials: Properties and Applications. VOLUME: 3 ISSUE: 1. Author(s):Gholamali Sharifishourabi, Xiao Y. Chen, Tien-Binh Nguyen and Denis Rodrigue*. Affiliation:Department of Chemical Engineering, Universite Laval, Quebec, G1V0A6, Department of Chemical Engineering, Universite Laval, Quebec, G1V0A6, Department of Chemical Engineering, Universite Laval, Quebec, G1V0A6, Department of Chemical Engineering, Universite Laval, Quebec, G1V0A6. Keywords:Bio-based fillers, biofillers, flexible foam, mechanical properties, polyurethane, rigid foam.. Abstract:Background: Today, polyurethane foams can be found in various commercial products such as bedding, home furniture, automotive interiors and even construction materials. From a chemical point of view, polyurethane foams are made from a chemical reaction between a polyol (molecules with more than one hydroxyl group) and a diisocyanate in the presence of a blowing agent. Objective: Because of their highly ...
like polycarbonate polyols, polycaprolactone polyols, polybutadiene polyols, and polysulfide polyols have been used to make polyurethane sealants.. Now, Chinese researchers have developed a novel ricinoleic acid based phosphorus and nitrogen-containing flame retardant polyols (FRPE) for polyurethane sealants. The flame retardant polyols were characterized by different characterization techniques.. Flame retardant polyurethane sealants (FR-PUS) were prepared by curing flame retardant polyols with methylene diphenyl diisocyanate (MDI-50). The flame retardant properties of the polyurethane sealants were investigated using limiting oxygen index (LOI), cone calorimeter testing (CCT) and thermogravimetric analysis (TGA).. Results showed that flame retardant polyols could enhance the thermal stability and flame retardancy of polyurethane sealants without adding any other flame retardant.. Now, industries manufacturing polyurethane sealants could produce them in a renewable way which will be ...
Dive into the research topics of Four-year follow-up of effects of toluene diisocyanate exposure on the respiratory system in polyurethane foam manufacturing workers - II. Four-year changes in the effects on the respiratory system. Together they form a unique fingerprint. ...
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278464943 - EP 1844756 A1 2007-10-17 - Cosmetic product comprising at least one cyanoacrylate monomer and at least one non-ionic polyurethane. - Cosmetic product for treating keratinic fibers comprises a cyanoacrylate monomer and a nonionic polyurethane. Independent claims are also included for: (1) cosmetic treatment of artificially dyed keratinic fibers by applying a product as above in the presence of a nucleophile, especially water; (2) hair coloration by applying a pigment composition and then applying a product as above, where a nucleophile is present in the composition or the product.[origin: EP1844756A1] Cosmetic product for treating keratinic fibers comprises a cyanoacrylate monomer and a nonionic polyurethane. Independent claims are also included for: (1) cosmetic treatment of artificially dyed keratinic fibers by applying a product as above in the presence of a nucleophile, especially water; (2) hair coloration by applying a pigment composition and then applying a product as above, where a
Viswanathan T.; Burrington D.; Richardson T., 1984: Preparation of rigid low density flame retardant polyurethane foams from whey permeate
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Cosmetics. The Triethylene Glycol Rosinate report provides the past, present and future industry trends and the forecast information related to the expected Triethylene Glycol Rosinate sales revenue, Triethylene Glycol Rosinate growth, Triethylene Glycol Rosinate demand and supply scenario. Furthermore, the opportunities and the threats to the development of Triethylene Glycol Rosinate market are also covered at depth in this research document.. Initially, the Triethylene Glycol Rosinate manufacturing analysis of the major industry players based on their company profiles, annual revenue, sales margin, growth aspects is also covered in this report, which will help other Triethylene Glycol Rosinate market players in driving business insights.. To Download A Sample Of The Report Click Here: https://market.biz/report/global-triethylene-glycol-rosinate-market-2017/148596/#requestforsample. Key Emphasizes Of The Triethylene Glycol Rosinate Market:. The fundamental details related to Triethylene Glycol ...
A method for preparing a foam-layered packaging material, which method includes the steps of providing an outer shell having a bottom wall and upwardly extending side walls defining an interior space and having an open top; pouring onto the bottom wall of the outer shell a predetermined quantity of a mixture of polyurethane foam-forming reactants; covering the open top of the outer shell with an inner protecting and cushioning layer so as to define a confined space within outer shell; and allowing the mixture of polyurethane foam-forming reactants to foam and completely fill the confined space with polyurethane foam while at the same time forming a direct bond between the foam and the inner cushioning layer over substantially the entire surface of the inner cushioning layer facing the confined space; wherein the predetermined quantity of the polyurethane foam-forming reactants is an amount effective to substantially completely fill the confined space with polyurethane foam and bond the foam with
Cellulose nanocrystals (CNC) were successfully obtained and modified with 1,6-hexamethylene diisocyanate (HE)!) by means of in situ polymerization varying the CNC/HDI molar ratio to evaluate the number of anchored chains to the CNC. The modification was examined by elemental analysis, nuclear magnetic resonance ((13)C NMR) and attenuated total reflection Fourier transform infrared spectroscopy (IR-ATR). Nanocomposites containing 1.5 wt% CNC, modified and unmodified, were prepared by solvent casting. Thermal and mechanical properties of the resulting films were evaluated from the viewpoint of polyurethane microphase separated structure, soft and hard domains. CNC were effectively dispersed in the polyurethane matrix and depending on surface chemistry, the nanoreinforcement interacts selectively with matrix nanodomains. This interpretation is supported by differences in thermal and mechanical properties of the nanocomposites and also confirmed by AFM images. Isocyanate rich cellulose nanocrystals ...
Like acrylics and alkyds, polyurethanes (PUs) represent an important class of industrial paints adopted by 20th and 21st artists; primarily by those creating outdoor painted sculptures (OPS). Because PU coatings offer a compromise between aesthetic and performance expectations, unachievable with other types of paints, they are commonly recognized as the most appropriate option for painted artworks intended for an outdoor setting. However, the PU class includes various systems and subgroups possessing very different properties. Through the FTIR-ATR study of 137 PU coating references from the Getty Conservation Institute (GCI) reference collection, this paper outlines the differences and the similarities existing, in terms of the composition, of two package solvent-borne, two package water-borne, one package water-borne and fluoropolymer polyurethanes. The comparison of the obtained FTIR-ATR results allowed determining markers helpful to discriminate specific PU subgroups by means of ATR-FTIR spectroscopy
SAN FRANCISCO, April 1, 2014-- Hybrid Coating Technologies Inc. is pleased to announce that it is entering the $20 B plus synthetic polyurethane leather industry. Hybrid is close to filing a patent on a variation of its nonisocyanate polyurethane platform technology for synthetic leather.
A bis(cyclic carbonate) was obtained via glycidylation of lignin-based bisphenol followed by cycloaddition with CO2. Further polyaddition between the bis(cyclic carbonate) and diamines led to the synthesis of polyurethanes. The structure and thermal properties of these polyurethane materials were elucidated
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A flexible, highly resilient, cold-cure, closed-mold polyurethane foam can be produced by reacting a foamable mixture comprising an organic polyisocyanate, water and a polyol. The foams of the invention are preferably prepared from a mixture of a hydroxyl-terminated graft copolymer and a hydroxyl-terminated polyoxyalkylene polyether in the presence of a co-catalyst mixture of at least one tertiary amine catalyst and at least one metal-containing basic catalyst. Said catalyst is selected from the group consisting of an alkali metal hydroxide, an alkaline earth metal hydroxide, an inorganic basic salt thereof derived from the reaction of said hydroxides with a weak inorganic acid, a metal organic basic salt catalyst derived from the reaction of at least one of said hydroxides with an organic acid and mixtures thereof. Useful metal organic catalysts are selected from the group consisting of the alkali and alkaline earth metal carboxylates, alkoxides and phenates. Useful inorganic basic metal salt catalysts
Autori: Gabriela Ciobanu, Gabriela Carja, Octavian Ciobanu. Editorial: Materials Science and Engineering: C, 27 (5-8), p.1138-1140, 2007.. Rezumat:. Polymer-zeolite nanocomposite membrane separations represent a growing technological area with potentially high economic reward due to the low energy requirements. The use of polymer-zeolite nanocomposite membrane with incorporated zeolite nanocrystals has the potential to combine the advantages of polymers and zeolites while overcoming the shortcomings of both materials. This work focuses on the use of zeolite SAPO-5 nanocrystals for the preparation of the composite polyurethane membranes. SAPO-5 nanocrystals are synthesized in our laboratory and characterized by XRD and SEM analyses. Polymer-zeolite membranes were prepared by the incorporation of dispersible SAPO-5 nanocrystals into the polyurethane matrix. Polyurethane solutions were selected as organic network and a series of membranes, in which the content of zeolite ranges between 10 and 70 ...
0027] In a preferred embodiment, the aqueous polyurethane dispersions essential to the invention are produced in that [0028] A) isocyanate-functional prepolymers are produced from [0029] A1) at least two organic di- or polyisocyanates that are different from one another, [0030] A2) at least two poly(tetramethylene glycol) polyether diols A2a) and A2b) that are different from one another, each with the structure (HO--(CH2--CH2--CH2--CH2--O)x--H), wherein the relevant diol precursors are present with number-average molecular weights Mn of 400 to 8000 g/mol, preferably 600 to 3000 g/mol, and the diol with the lower molar mass A2a) has a number-average molecular weight Mn which is 10 to 80%, preferably 30 to 70%, of the number-average molecular weight Mn of the diol with the higher molar mass A2b), [0031] A3) optionally hydroxy-functional compounds with molecular weights of preferably 62 to 399 g/mol, and [0032] A4) optionally non-ionic hydrophilising agents [0033] and [0034] B) their free NCO ...
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Thermoplastic polyurethane (TPU) based conductive polymer composites (CPCs) with a reduced percolation threshold and tunable resistance-strain sensing behavior were obtained through the addition of synergistic carbon nanotubes (CNT) and graphene bifillers. The percolation threshold of graphene was about 0.00 Editors Choice: Making sense of nanosensors and devices
Ask the Expert Question-and-Answer Archive. by Ron Joseph March, 2005. Solvent Entrapment on Paint Coatings Q. I am using a polyurethane coating HUMISEAL 1A33 and then drying it an IR Oven. Is this recommended as I believe the solvent gets trapped in the coating and it can never completely cure as there would be no oxygen. Would an acrylic coating be better? A. If you place the polyurethane or ANY other coating into an oven too soon, the solvents can become entrapped in the paint coating film. In some cases the solvents can remain in the coating for years and eventually cause blistering. Polyurethanes and epoxies are more prone to this than single component paint coatings because they cross link when they cure. You CAN cure a polyurethane or epoxy in an IR or convection oven, but first wait for several minutes to allow the solvents to flash off at room or even at a slightly elevated temperature. You will need to experiment with the flash-off time because it is affected by the film thickness of ...
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0068] As mentioned, optional layers may be applied to automotive headliners during the molding step. Of particular interest are reinforcing scrims as described in WO 2002/04252, which may be applied to either or both sides of the fiber mat. Reinforcing scrims are suitably prepared from fibers of the types described before, and as before may be woven or nonwoven (or both). Reinforcing scrims of particular interest are made of an organic polymer such as a polyolefin or a polyester, or a natural fiber as described before. Such a scrim may also contain a quantity of glass fibers in addition to the organic polymer or natural fibers. The reinforcing scrim tends to be heavier, on a weight/unit area basis, than the mat of reinforcing fibers. As such, it tends to be less porous and less easily penetrated by the polyurethane-forming composition, although some penetration usually occurs. Even if little penetration occurs, the cured polyurethane functions as an adhesive to bind the scrim. The reinforcing ...
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Silicone Polyurethane and Semipermeable Film in the Prevention of Pression Caused Ulcers in Bedridden Elderly Patients: an Experience Report FLORÊNCIO,
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Extremely difficult ground conditions were encountered in the main belt entry in a room-and-pillar mine in West Virginia. Several generations of supplemental support, including cable bolts, cribbing, and Heintzmann jacks and beams, failed to halt roof falls that threatened workers safety and the life of the mine. Polyurethane (PUR) was injected into 27 intersections in the roof, and the results
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Its major application is its use for the production of polyether polyols for use in making polyurethane plastics. It is a ... "Polyurethanes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a21_665.pub2. "Usage ... These polyols are building blocks in the production of polyurethane plastics. About 20% of propylene oxide is hydrolyzed into ...
"Polyurethanes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a21_665.pub2.. ... PPG is used in many polyurethane formulations. PPG is used as a surfactant, wetting agent, dispersant in leather finishing. PPG ...
The major application of 4,4'-MDI is the production of rigid polyurethane. These rigid polyurethane foams are good thermal ... MDI reacts with polyols in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the ... Boustead, I. (2005). "Polyurethane rigid foam" (PDF). Eco-Profiles of the European Plastics Industry. Brussels: PlasticsEurope ... Randall, D.; Lee, S. (2003). The Polyurethanes Book. New York: Wiley. ISBN 978-0-470-85041-1. Tullo, Alexander H. (29 July 2019 ...
doi:10.1002/14356007.a14_611.CS1 maint: uses authors parameter (link) Randall, David; Lee, Steve (2002). The Polyurethanes Book ...
It is used in the production of flexible polyurethane foams. The LD50 for TDI is 5800 mg/kg for oral contact and LC50 of 610 mg ... The Polyurethanes Book. New York: Wiley. ISBN 978-0-470-85041-1. Six, C.; Richter, F. "Isocyanates, Organic". Ullmann's ...
CO2 This reaction is exploited in tandem with the production of polyurethane to give polyurethane foams. The carbon dioxide ... Polyurethanes have variable curing times, and the presence of free isocyanates in foams vary accordingly. Both the US National ... Polyurethane foam boards are used in construction for insulation. TDI is commonly used in applications where flexible foams are ... ISBN 978-0-470-85041-1. US EPA, OCSPP (2015-08-14). "Chemicals and Production of Spray Polyurethane Foam - Why It Matters". US ...
Aliphatic diisocyanates are used, not in the production of polyurethane foam, but in special applications, such as enamel ... 0356". National Institute for Occupational Safety and Health (NIOSH). Randall, David; Lee, Steve (2002). The Polyurethanes Book ...
"Polyurethanes in Polyurethanes timeline". www.polyurethanes.org. Retrieved 2016-08-03. Insulation Alternatives: Sprayed Foam ... Polyurethane and polyisocyanurate are two types of foam used in this application. Spray polyurethane foam (SPF) insulation can ... Otto Bayer (1902-1982) is credited with the invention of polyurethane in 1937. He succeeded in synthesizing polyurethane foam ... Spray polyurethane foam comes in a range of densities and cell structure. Low density foams are referred to as open cell SPF ...
doi:10.1002/14356007.a15_077.CS1 maint: uses authors parameter (link) The polyurethanes book. Randall, David, Lee, Steve, 1941 ... Everberg, Belgium]: [Huntsman Polyurethanes]. 2002. ISBN 0470850418. OCLC 50479333.CS1 maint: others (link) Pilato, Louis A.; ...
"Why Use Durlast Polyurethanes?". Durlast. Archived from the original on 22 July 2011. Retrieved 19 September 2011. See Getty ... The 1974 model's "Durlast" polyurethane coating provided waterproofing as well as protection from damage such as scuffs and ...
polystyrene and polyurethane due to its gas-filled closed-cell foam structure. Denser and more rigid than polystyrene panels, ... Polyurethane. White or yellow. Produced through mixing of isocyanate and polyether in presence of catalyst and blowing agent. ... Rigid panel insulation, also referred to as continuous insulation, can be made from foam plastics such as polyurethane (PUR), ... Polyisocyanurate (also known as polyiso). More stable at high temperatures and less flammable than polyurethane. Higher R-value ...
Representative shape-memory polymers in this category are polyurethanes, polyurethanes with ionic or mesogenic components made ... Polyurethane SMPs are also applied as an autochoke element for engines. One fascinating field in which SMPs are impacting quite ... Kim B.K.; Lee S.Y.; Xu M. (1996). "Polyurethanes having shape memory effects". Polymer. 37 (26): 5781. doi:10.1016/S0032-3861( ... Leng, J.; Lv, H.; Liu, Y.; Du, S. (2008). "Comment on "Water-driven programable [sic] polyurethane shape memory polymer: ...
Invented polyurethane. Albert Ballin: Father of modern cruise ship travel Heinrich Band: Developed a musical instrument and ...
Applications in Molded Polyurethane Foams. Orlando: Center for the Polyurethane Industry Conference. Stanciu, Romeo; Paul ... The interest of automakers is responsible for much of the work being done on the use of NOPs in polyurethane products for use ... Castor oil by itself has been used in making a variety of polyurethane products, ranging from coatings to foams, and the use of ... One of the first uses for NOPs (other than castor oil) was to make spray-on polyurethane foam insulation for buildings. NOPs ...
These include epoxies, polyurethanes, and cyanoacrylates. Epoxies have shown 150-1,050 psi (1,000-7,200 kPa) shear strength. ...
known as Wanhua Chemical and formerly Yantai Wanhua Polyurethane or Yantai Wanhua Polyurethanes or Yantai Wanhua, is a Chinese ... The listed company was incorporated in 1998 as Yantai Wanhua Polyurethane Co., Ltd. (Chinese: 烟台万华聚氨酯股份有限公司). Co-founder of the ... 烟台万华聚氨酯股份有限公司招股说明书概要 (prospectus) (in Chinese). Yantai Wanhua Polyurethane. 13 December 2000. Retrieved 15 January 2020 - via ... As of 2019, it is the world's largest producer of
It is often referred to as "viscoelastic" polyurethane foam, or low-resilience polyurethane foam (LRPu). The foam bubbles or ' ... Low-resilience polyurethane Sorbothane Neoprene List of polyurethane applications Nelles, Barbara. "Exhibitors emphasize value ... "Polyurethane Foam Association". pfa.org. Archived from the original on 2010-01-04. Retrieved 2010-01-15. Strand, Andrea. " ... Peterson, Bruce W. "Mr". Polyurethane Gel-Like Polymers, Methods and Use in Flexible Foams. Archived from the original on 2014- ...
Polyurethane condoms tend to be the same width and thickness as latex condoms, with most polyurethane condoms between 0.04 mm ... However, polyurethane condoms are less elastic than latex ones, and may be more likely to slip or break than latex, lose their ... Polyurethane can be considered better than latex in several ways: it conducts heat better than latex, is not as sensitive to ... Polyurethane condoms in particular, given they are a form of plastic, are not biodegradable, and latex condoms take a very long ...
Synthetic sponges can be made of polyester, polyurethane, or vegetal cellulose. Polyurethane is used in polyester sponges for ... Matthew 27:48 "Polyurethane Foam Kitchen Sponge. History of Origin - Vortex Power". www.vortex-power.com. Retrieved 2018-04-14 ... "Polyurethane Sponge - Dynathane , PAR Group". www.par-group.co.uk. Retrieved 2018-04-14. Hickman, Matt (2017-08-21). "What's ... made possible to be manufactured only after the invention of polyester in 1941 and the commercial production of polyurethane ...
"Kingspan Insulation buys Air-Cell Innovations in Australia". utech-polyurethane.com. Retrieved 13 February 2021. "Kingspan ...
A report from the Proceedings of the Polyurethane Foam Association also showed no benefit in open-flame and cigarette tests ... A small study of U.S. foam recyclers and carpet installers, who handle padding often made from recycled polyurethane foam, ... In polyurethane foam, furniture manufacturers typically meet TB 117 with additive halogenated organic flame retardants. ... "Low VOC Cal TB 117 Using Bio-Renewable Technologies - Rowlands, J. Polyurethane Foam Association Conference St Petersburg, ...
"Vitafoam Nigeria profits up in 2016 - Utech-polyurethane.com". Utech-polyurethane.com. Retrieved 2018-07-13. Egwuatu, Peter ( ... It is one of Nigeria's largest foam manufacturers, producing both flexible and rigid polyurethane products. The company also ... "Vitafoam behind Nigerian project to create eco-friendly homes for less than EUR 17,000 - Utech-polyurethane.com". Utech- ... Utech-polyurethane.com". Utech-polyurethane.com. Retrieved 2018-07-13. " ...
CS1 maint: discouraged parameter (link) 烟台万华聚氨酯股份有限公司招股说明书概要 (prospectus) (in Chinese). Yantai Wanhua Polyurethane. 13 December ... The manufacturing technology was imported from Japan (from Nippon Polyurethane Industry [ja] according to C&EN) and was the ... Wanhua Industrial Group was the direct parent company of the listed company Yantai Wanhua Polyurethane since 2001 and effective ... The latter also owned the assets that directly related to polyurethane production, including BorsodChem.
Production of reticulated polyurethane foam is a two-step process that begins with the creation of conventional (closed-cell) ... Reticulated metal foam can also be made using polyurethane foam as a template similar to its use in ceramic foams. Metals can ... The solid component of a reticulated foam may be an organic polymer like polyurethane, a ceramic or a metal. These materials ... Thomson, Tim (2004). Polyurethanes as specialty chemicals: principles and applications. CRC. p. 99. ISBN 978-0-8493-1857-3. ...
"Flowserve buys UK´s MF Sealing". utech-polyurethane.com. 2007-07-24. Retrieved 2017-08-23. "Calder bought by Flowserve". Water ...
A key use for TMXDI is in manufacturing polyurethane prepolymers. It is also used to manufacture Polyurethane dispersions (PUDs ... "Water Based Polyurethanes Dispersions(PUDs)-An Overview". www.linkedin.com. Retrieved 2018-10-23. "TMXDI Technical Bulletin" ( ... Howarth, G A; Manock, H L (July 1997). "Water-borne polyurethane dispersions and their use in functional coatings". Surface ... There are advantages though with TMXDI especially when making Polyurethanes Dispersions(PUDs). The NCO groups on the molecule ...
Waterborne polyurethanes are also available in 2 component versions. As a 2 component polyurethane consists of polyol(s) and an ... see also Polyurethane dispersion Polyurethanes resins are available waterborne. The single component versions are usually ... Howarth, GA (2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings ... "Water Based Polyurethanes Dispersions(PUDs)-An Overview". www.linkedin.com. Retrieved 2020-03-24. [1], "Two-component water- ...
Isocyanates are widely used in the manufacture of polyurethane products and pesticides; methyl isocyanate, used to make ... Greenwood, Table 8.9 Seymour, Raymond B.; Kauffman, George B. (1992). "Polyurethanes: A Class of Modern Versatile Materials". J ...
Polyurethanes, polyesters, epoxy resins and a number of other types of polymers have been developed with comparable properties ... Unlike traditional cross-linked polyurethanes, cross-linked polyhydroxyurethanes are in principle amenable to recycling and ... "From Petrochemical Polyurethanes to Biobased Polyhydroxyurethanes" (PDF). Macromolecules. 46 (10): 3771-3792. Bibcode:2013MaMol ... strength and extensibility of lipid-based polyurethanes with cellulose-based nanofibers". Polymer Degradation and Stability. 97 ...
Polyurethane and isocyanate foams are applied as a two-component mixture that comes together at the tip of a gun, and forms an ... Less flammable than polyurethane. Phenolic injection foam Such as Tripolymer R-5.1 per inch (ASTM-C-177). Known for its air ... Closed-cell polyurethane White or yellow. May use a variety of blowing agents. Resistant to water wicking and water vapor. Open ... All polyurethane foams are composed of petrochemicals. Foam insulation often uses hazardous chemicals with high human toxicity ...
... is a compound fabric made by laminating a cloth fabric to one or both sides of a thin film of polyurethane.[1][2] Polyurethane ... a b c d e A GUIDE TO HIGH PERFORMANCE POLYURETHANE UPHOLSTERY FABRICS ... Most PUL fabric is made by laminating lightweight polyester interlock knit fabric to a 1 mil thick film of polyurethane. There ... There are many different polyurethane blends and resin types,[3] which vary in durability, resistance to heat, ambient humidity ...
Center for the Polyurethanes Industry: information for EH&S issues related to polyurethanes developments Polyurethane synthesis ... Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes ... Degradation of polyurethane items at museums has been reported. Polyester-type polyurethanes are more easily biodegraded by ... "Help Wanted: Spray Polyurethane Foam Insulation Research". NIOSH Science Blog. CDC. "Quick Safety Tips for Spray Polyurethane ...
Polyurethane materials from Dow deliver superior flexibility and processability in furniture, insulation, structural and ... Combined with isocyanates and other additives to produce polyurethane foams or semi-rigid polyurethane plastics.. ... Enhance the processing and performance of polyurethane foams and semi-rigid plastics with polyurethane additives.. ... polyurethane additives and surfactants as well as polyurethane systems allow fast cure, excellent flexibility, superior bond ...
Polyurethane is a reliable, long-lasting oil or water-based wood finish that is available in interior and exterior formulas. ... Stir the polyurethane well with a paint stir stick. Lower-gloss (like semi-gloss, satin, and matte) polyurethanes have a sheen ... Oil-based polyurethanes take longer to dry and are best suited for beginner wood finishers. Water-based polyurethanes are best ... Polyurethane is a reliable, long-lasting oil or water-based wood finish that is available in interior and exterior formulas. ...
The polyurethane forms when an isocyanate group (R-N=C=O) from toluene diisocyante reacts with a hydroxyl group from glycerol ...
Rigid polyurethane foam board insulation. Foil and plastic facings on rigid, polyurethane foam panels can help stabilize the R- ... Sprayed-foam polyurethane insulation. Sprayed or foamed-in-place applications of polyurethane insulation are usually cheaper ... Polyurethane insulation is available as a liquid sprayed foam and rigid foam board. It can also be made into laminated ... Some polyurethane foam combines with a HCFC gas instead. These types dont insulate as well as insulation made with a CFC gas, ...
Polyurethane Dispersion, or PUD, is understood to be a polyurethane polymer resin dispersed in water, rather than a solvent. ... Howarth, GA (2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings ... "NON-IONIC POLYURETHANE DISPERSIONS HAVING SDE CHANS OF POLYOXYETHYLENE" (PDF). "GEO Specialties Use of DMPA for PUDs" (PDF). ... "Water Based Polyurethanes Dispersions(PUDs)-An Overview". 2015-01-30. Retrieved 2018-08-21. Tant, M. R.; Mauritz, K. A.; Wilkes ...
To start off, we make polyurethanes from two monomers, a diol and a diisocyanate. Can we get a look at them? Yes, there they ... This is a most exciting, page, surely it is! This is the page where you the netsurfer will learn how to make polyurethanes! Now ... This gives us a polymer within a polymer so to speak, and we have a polyurethane that looks something like this: If you like, ... In this way, monomers and oligomers combine and combine until we get a high molecular weight polyurethane. For those of you ...
... expertise and service to help you develop the next generation of high-performance polyurethane solutions to meet the EPAs ... Polyurethane Insulation Changes Proposed * Collaboration between Dow and Honeywell Delivers More Sustainable Appliance ... Change is not always easy and the dynamic regulatory environment around polyurethane foam blowing agents and low-global-warming ...
Polyurethane protects wooden tabletops. (Image: Jupiterimages/Photos.com/Getty Images). Polyurethane is a type of varnish with ... Polyurethane applied to a wood surface when temperatures are below 50 F may take the product longer to dry. Never sand a tacky ... Allow the first polyurethane coat to dry. Depending on temperature and humidity, it may take up to 24 hours for the urethane to ... To create a good resistant finish, multiple coats of the polyurethane may be required on the wood surface. Between each coat ...
... invention relates to a multi-stage process for the continuous preparation of thermoplastically processable polyurethanes with ... Polyurethane elastomers mfr by direct reac - tion in extruder. DE2610980A1. Mar 16, 1976. Sep 22, 1977. Basf Ag. Speck-free ... Thermoplastic polyurethanes and their use. US20090192274 *. Jan 23, 2009. Jul 30, 2009. Bayer Materialscience Ag. Thermoplastic ... Thermoplastic polyurethanes (TPU) have been known for a long time. They are of industrial importance because of the combination ...
... polyurethane lacquers or polyurethane leather coating compounds and they may also replace polyurethanes in other fields. ... The organic polyisocyanates used for preparing the polyurethanes and in particular polyurethane foams in accordance with the ... Their use as starting components for the production of polyurethane resins makes it possible to produce polyurethanes which are ... Production of polyurethane foams with the aid of the dispersions according to the invention is preferably carried out by the so ...
A polysiloxane polyurethane composition is prepared by combining in the presence of water and in a predetermined proportion an ... urethane prepolymers that cure at ambient temperatures in the presence of moisture to form a polysiloxane polyurethane ... Silicon-containing polyurethanes. US3404130 *. Dec 7, 1965. Oct 1, 1968. Exxon Research Engineering Co. Polyurethane coating ... Polyurethane resin and heat-sensitive recording medium. US4999412 *. Jun 28, 1989. Mar 12, 1991. Union Carbide Chemicals And ...
... gap-filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments. ... Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, ... 3M™ Polyurethane Sealant 540 is a single-component, moisture-curing, polyurethane sealant used to bond a wide variety of ... 3M™ Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane that creates ...
About POLYURETHANE-11: Polyurethane-11 is a copolymer of Adipic Acid (q.v.), 1, 4-Butanediol (q.v.)., isophthalic acid, ...
White Polyurethane - Shop our range of storage solutions at M&S. Shop from kitchen storage, storage containers, baskets, stools ... Polyurethane Storage from our M&S home and furniture range ... MaterialPolyurethane. MaterialPolyurethane. * Polyurethane(1) * ...
... polyurethanes in the automotive industry will be evident at UTECH Europe this year, with experts discussing some of the latest ... manufacturing polyurethane-based automotive components in the UTECH Europe exhibition which runs alongside the conference. ... Huntsman Polyurethanes on modelling the influence of microstructure on sound-absorbing properties of polyurethane foam, an ... "Polyurethane-based products are ideally suited for making a wide range of automotive products, so they remain the most widely ...
... High performance radial shaft seals. HRS seals are specially designed to cope with the harsh conditions ... HRS seals are made of G-ECOPUR, a polyurethane with excellent abrasion resistance and tear strength (Fig. 2). ...
... High performance radial shaft seals for wind turbines. HRS seals from SKF are specially designed to cope ... HRS seals are made of G-ECOPUR, a polyurethane elastomer material with excellent abrasion resistance and tear strength (Fig. 2 ...
Today, when a woodworker says poly, the polyurethane under discussion is a tough, moisture-resistant film finish available in ... How and When to Use Polyurethane in Woodworking. Developed as a substitute for rubber during World War II. Today, when a ... The same chemical constituents that make this polymer are also used in polyurethane caulk, paints, glue and spray foam ... Today, when a woodworker says "poly," the polyurethane under discussion is a tough, moisture-resistant film finish available in ...
... leading edge erosion protection tape comprised of a tough polyurethane backing and a high shear acrylic adhesive. It strongly ... Polyurethane Protective Tape 8545HS is a matte black, 42 mil, ... 3M™ Polyurethane Protective Tape 8545HS. Part Number 8545HS, 3M ... 3M™ Polyurethane Protective Tape 8545HS is a matte black thermoplastic polyurethane elastomer tape designed to provide premium ... 3M™ Polyurethane Protective Tape 8545HS is a matte black, 42 mil, leading edge erosion protection tape comprised of a tough ...
Polyurethane-finished wood floors are more durable than the wax coatings of the past. However, you still need to take special ... Maintaining Polyurethane Wood Floors * {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/7c\/Clean-Polyurethane-Wood- ... v4-460px-Clean-Polyurethane-Wood-Floors-Step-2.jpg","bigUrl":"\/images\/thumb\/a\/a8\/Clean-Polyurethane-Wood-Floors-Step-2.jpg ... v4-460px-Clean-Polyurethane-Wood-Floors-Step-4.jpg","bigUrl":"\/images\/thumb\/f\/fc\/Clean-Polyurethane-Wood-Floors-Step-4.jpg ...
Polyurethane foams have been analyzed by headspace, thermal desorption, mass spectrometry, or extraction followed by post ... Analysis of Extractable Volatile Components in Polyurethane Foam 870317. Polyurethane foams have been analyzed by headspace, ... Citation: Frost, J., Phillips, J., and Smith, N., "Analysis of Extractable Volatile Components in Polyurethane Foam," SAE ... We have used this methodology to analyze for residual volatiles in twenty-one polyurethane interior automobile components ...
A wide variety of turtle polyurethane options are available to you, such as free samples. ... Alibaba.com offers 19 turtle polyurethane products. About 5% of these are adhesives & sealants. ... lowes polyurethane tinted polyurethane polyurethane elastomer polyurethane prepolymer polyurethane isocyanate polyurethane raw ... material polyurethane price polyurethane foam polyurethane resin polyurethane binder rubber granules polyurethane spray foam ...
PRNewswire/ -- The Polyurethane Chemicals and Products in South America 2018 - Volume 3 Rigid Foam report has been added to ... The Polyurethane Chemicals and Products in South America 2018 - Volume 3 Rigid Foam report has been added to ... Introducing the updated in-depth market report on Polyurethane Chemicals and Products in South America with focus on rigid ...
The lower density of the polyurethane in the mixture, along with the formation of zones of pure polyurethane only, resulted in ... The moisture also caused the density of the polyurethane in the polyurethane-aggregate mixture to be less than the design ... Mining Publication: Performance of a Polyurethane Core Seal Tested in a Hydrostatic Chamber. Keywords: National Institute for ... However, it will be shown that the evaluation of the polyurethane seal performance as designed to meet the older 20-psi ...
Originally Published MDDI March 2006 MATERIALS Polyurethanes are ideal for use in many medical devices. But manufacturers must ... Polyurethanes for dip-molding.. • Polyurethane coatings.. • Biostable polyurethanes.. • Thermoplastic polyurethanes.. With so ... The resulting polyurethane that is dispensed is clear and homogeneous.. Accuracy in the amount of polyurethane dispensed each ... Polyurethanes for Dip Molding. Polyurethanes are also well suited for manufacturing dip-molded devices such as balloons, probe ...
Thermoplastic Polyurethanes Polymer (TPU) by Engineered Polymer Technologies (EPT). EPTs XTRM Ply Thermoplastic Polyurethanes ... thermoplastic polyurethanes polymer water pillow tank spill containment boom potable water spill containment containment boom ... No reviews were found for EPT XTRM Ply - Thermoplastic Polyurethanes Polymer (TPU). Be the first to review! ... EPTs XTRM Ply Thermoplastic Polyurethanes (TPU) are offered in both polyether and polyester base polymers. Polyether-based ...
Main articles: List of polyurethane applications and Polyurethane varnish. In 2007, the global consumption of polyurethane raw ... "Market Study: Polyurethanes and Isocyanates". Ceresana. July 2013.. *^ "Discoloration of polyurethane foam". Foamex Information ... Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes ... About Health: Polyurethane Condoms *^ Bayer, Otto (1947). "Das Di-Isocyanat-Polyadditionsverfahren (Polyurethane)". Angewandte ...
... www.ferret.com.au showcases products from suppliers of Polyurethane Foams and other related products and services. ... Polyurethane elastomers available from Era Polymers. 28/07/08 - Era Polymers specialises in the design and manufacture of ... Some of the polyurethane-based products, supplied by Era Polymers, include polycaprolactone, polyester and polyether. ... ... Over 3 decades they have accumulated a wealth of experience in the polyurethane industry and are recognised leaders in the ...
  • In 1960 more than 45,000 metric tons of flexible polyurethane foams were produced. (wikipedia.org)
  • The availability of chlorofluoroalkane blowing agents, inexpensive polyether polyols, and methylene diphenyl diisocyanate (MDI) allowed polyurethane rigid foams to be used as high-performance insulation materials. (wikipedia.org)
  • Polyurethane foams have gained popularity in the automotive realm, and are now used in high-temperature oil-filter applications. (wikipedia.org)
  • These foams are similar to conventional polyurethane foams, but are more flexible. (daviddarling.info)
  • If you like, you can learn how to make a polyurethane foams . (pslc.ws)
  • Antoine Fluhr of Johnson Controls Inc., Belgium, will discuss the latest developments in humid heat-aging of polyurethane foams in car seats. (theautochannel.com)
  • Polyurethane foams have been analyzed by headspace, thermal desorption, mass spectrometry, or extraction followed by post analysis to investigate a variety of technical problems related to volatile species. (sae.org)
  • Introducing the updated in-depth market report on Polyurethane Chemicals and Products in South America with focus on rigid foams. (prnewswire.com)
  • 29/07/08 - Era Polymers manufactures an extensive range of polyurethane foams suitable for refrigeration, insulation and automotive applications. (ferret.com.au)
  • The present invention relates to cavity wound dressings made from polyurethane foams, and to methods for the manufacture of such wound dressings. (freepatentsonline.com)
  • Global Spray Polyurethane Foams (SPF) Industry 2017 Market. (mynewsdesk.com)
  • The Global Spray Polyurethane Foams (SPF) Industry 2016 Market Research Report is a professional and in-depth study on the current state of the Spray Polyurethane Foams (SPF) industry. (mynewsdesk.com)
  • The Spray Polyurethane Foams (SPF) market analysis is provided for the international market including competitive landscape analysis, and major regions'development status. (mynewsdesk.com)
  • What's more, the Spray Polyurethane Foams (SPF) industry development trends and marketing channels are analyzed. (mynewsdesk.com)
  • Polyurethane foams are used in air and water filter media of air conditioners. (prnewswire.com)
  • A new way for recycling polyurethane (PU) foams is shown by scrap pulverization and subsequent compression molding of resulting particles. (wiley.com)
  • Car seats, mattresses and insulation materials are often made of polyurethane foams. (phys.org)
  • Polyurethane foams - PU foams for short - play a big role in our everyday lives, even if we are generally not aware of them. (phys.org)
  • The full three-day conference includes sessions covering all areas of the polyurethanes industry including flexible foams, rigid and spray foams, blowing agents, CASE (Coatings Adhesives, Sealants and Elastomers), additives, polyureas, composites and automotive applications. (businesswire.com)
  • BASF Polyurethanes (stand 630) will showcase its new generation of HFO-blown spray foams, Elastospray LWP, and Slentite a high-performance insulation panel that is twice as insulating as conventional PU/PIR materials. (businesswire.com)
  • The polyurethane adhesive is also used to form sandwich structures, construction of â ¦ The unique characteristics of PU foams are increasing their demand in the market. (dreamcast-scene.com)
  • Polyurethane can be a solid or can have an open cellular structure, in which case it is called foamâ ¦ and foams can be flexible or rigid. (dreamcast-scene.com)
  • Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. (wikipedia.org)
  • Polyurethane Dispersion, or PUD, is understood to be a polyurethane polymer resin dispersed in water, rather than a solvent. (wikipedia.org)
  • Its manufacture involves the synthesis of polyurethanes having carboxylic acid functionality or nonionic hydrophiles like PEG (polyethylene glycol) incorporated into, or pendant from, the polymer backbone. (wikipedia.org)
  • To produce these, initially a polyurethane prepolymer is manufactured in the usual way but instead of just using isocyanate and polyol, a modifier is included in the polymer Backbone chain or pendant from the main backbone. (wikipedia.org)
  • Polyurethane-based products are ideally suited for making a wide range of automotive products, so they remain the most widely used polymer in the sector" says UTECH conference chairman David Reed. (theautochannel.com)
  • The same chemical constituents that make this polymer are also used in polyurethane caulk, paints, glue and spray foam insulation. (popularmechanics.com)
  • No reviews were found for EPT XTRM Ply - Thermoplastic Polyurethanes Polymer (TPU) . (environmental-expert.com)
  • Polyurethanes are a unique class of polymer materials with a wide range of physical and chemical properties. (hindawi.com)
  • Polyurethanes are characterized by the presence of urethane linkages, although other groups such as ether, ester, and amide may be present in the polymer molecule [ 1 ]. (hindawi.com)
  • Sustainable polyurethanes are a fast growing segment of the polymer market and represent a success story for the investment by government and industry in products with a lower carbon footprint. (biofuelsdigest.com)
  • The effects of chain extender used in the extension of isocyanate-terminated pre-polymer during the preparation of waterborne-polyurethane (WPU) sizes were determined based on properties such as adhesion to fibers, film properties, desizability, and aerobic biodegradability. (ingentaconnect.com)
  • Polyurethane is the fifth-largest polymer in terms of production volumes, with 8 million tons produced annually. (biofuelsdigest.com)
  • RAMPF Polymer Solutions is presenting its range of high-performance silicone, polyurethane, and epoxy casting resins with maximum thermal conductivity at electronica 2018 in Munich, Germany, from November 13 to 16 - Hall A5/Booth 224. (openpr.com)
  • RAMPF Polymer Solutions GmbH & Co. KG is a leading developer and manufacturer of reactive resin systems based on polyurethane, epoxy, and silicone. (openpr.com)
  • INTRODUCTION: Expanding PU FOAM is a polyurethane polymer that reacts with moisture in the air causing it to expand to fill any shaped hole or cavity.The cured foa. (burrillandco.com)
  • The conference session dedicated to CASE products (coatings, adhesives, sealants and elastomers) on 19 April will include a presentation from Huntsman Polyurethanes on modelling the influence of microstructure on sound-absorbing properties of polyurethane foam, an important concern in the automotive sector. (theautochannel.com)
  • For example, biodegradable polyurethane elastomers are expected to contribute to cartilage tissue engineering applications in the near future. (bccresearch.com)
  • The unit will make and sell polyurethane systems, targeting high growth markets in adhesives, coatings, elastomers and insulation in Russia and other areas in the former Soviet Union. (rubbernews.com)
  • Polyurethane-finished wood floors are more durable than the wax coatings of the past. (wikihow.com)
  • Polyurethane coatings. (mddionline.com)
  • The global soft touch polyurethane coatings market is expected to expand at a CAGR of 7.2% during the forecast period (2015-2025), according to a new report titled, "'Soft Touch Polyurethane Coatings Market: Global Industry Analysis and Opportunity Assessment, 2015 - 2025. (openpr.com)
  • Soft touch polyurethane coatings find wide-ranging applications in automotive and aircraft interior components, interior wood surfaces (furniture, trim, doors) and consumer electronic devices such as mobile phones, TV, laptop and computer cases. (openpr.com)
  • This increased use of plastics in automobile interiors has led to an increase in demand for soft touch polyurethane coatings as a suitable option, owing to properties such as resistance to yellowing, scratching, abrasion and chemicals. (openpr.com)
  • Soft touch polyurethane coatings are widely used in the automobile industry to coat interior components such as arm rest, door trims, airbags compartments, steering wheel and front panels. (openpr.com)
  • The global soft touch polyurethane coatings market is segmented on the basis of base type, product type and end-use industry. (openpr.com)
  • On the basis of base type, the global soft touch polyurethane coatings market is segmented into water-based and solvent-based soft touch polyurethane coatings. (openpr.com)
  • Among base types, the solvent-based soft touch polyurethane coatings segment accounts for a major share in the global market. (openpr.com)
  • However, water-based soft touch polyurethane coatings segment is expected to gain traction and expand at highest CAGR in terms of value over the forecast period. (openpr.com)
  • Key players in this market are also shifting their focus from solvent-based to water-based soft touch polyurethane coatings due to the stringent environmental regulations pertaining to limit the volatile organic compound (VOC) emissions. (openpr.com)
  • In Asia Pacific, solvent-based soft touch polyurethane coatings are mainly preferred. (openpr.com)
  • On the basis of product type, the global soft touch polyurethane coatings market is segmented into 2K and UV coating systems. (openpr.com)
  • On the basis of end-use industry, the global soft touch polyurethane coatings market is segmented into transport and automotive, electrical and electronics, wood and furniture and others (measuring devices, packaging). (openpr.com)
  • Key playersin the global soft touch polyurethane coatings market include PPG Industries Inc., AkzoNobel N.V., RPM International Inc., The Sherwin Williams Company, Aexcel Corporation, Axalta Coatings Systems Ltd., Sokan New Materials and Jotun AS. (openpr.com)
  • Huntsman who will be showcasing new VITROX bonding solutions which bridge the performance gap between polyurethane and epoxy adhesives and are extremely useful for applications where heat-resistance is a fundamental consideration such as modern lightweight cars where engines and their associated components need to function in smaller, hotter spaces. (theautochannel.com)
  • Dow Chemical is expected to provide reactive PU plasticizers, which are considered to be useful for polyurethane moisture curing adhesives used in automotive glass bonding. (bccresearch.com)
  • A wide variety of polyurethane foam adhesive options are available to you, such as other adhesives, hot melt adhesives. (dreamcast-scene.com)
  • Urethane and polyurethane adhesives are used on both porous and nonporous substrates like wood, metal, glass, and plastic. (rshughes.com)
  • Urethane and polyurethane adhesives are water resistant, with some compounds offering high resistance to heat. (rshughes.com)
  • While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. (wikipedia.org)
  • Polyurethane polymers are traditionally and most commonly formed by reacting a di- or triisocyanate with a polyol. (wikipedia.org)
  • Compared with other polymers, polyurethanes often require sophisticated manufacturing processes and are more expensive on a price-per-pound basis. (mddionline.com)
  • Aliphatic polyurethanes make strong polymers but lack the chemical resistance of aromatics. (mddionline.com)
  • EPT's XTRM Ply Thermoplastic Polyurethanes (TPU) are offered in both polyether and polyester base polymers. (environmental-expert.com)
  • Owned and operated by Industrial chemists Era Polymers have been manufacturing polyurethanes since 1986. (ferret.com.au)
  • 15/05/13 - Era Polymers announces the acquisition of Ariel Industries Pty Ltd, a reputed developer, manufacturer and supplier of formulated polyurethane systems. (ferret.com.au)
  • 28/07/08 - Era Polymers specialises in the design and manufacture of polyurethane-based products suitable for industrial and mining applications. (ferret.com.au)
  • Some of the polyurethane-based products, supplied by Era Polymers, include polycaprolactone, polyester and polyether. (ferret.com.au)
  • The incorporation of sugar‐derived units into traditional step‐growth polymers such as polyamides, polyesters, and polyurethanes is a healthy method to prepare novel biodegradable and biocompatible materials for application in the biomedical field and other sectors such as foodstuff packaging. (intechopen.com)
  • Thermoplastic polyurethanes (TPU) have been known for a long time. (google.com)
  • Thermoplastic polyurethanes. (mddionline.com)
  • BASF Polyurethanes GmbH will open the Innovations Session on 17 April with a presentation on CosyPUR, which it describes as 'the ultimate foaming concept for flexible moulded applications,' and there will be a presentation from Bayer MaterialScience on advanced lightweight composites for automotive components. (theautochannel.com)
  • In this study polyurethane (PUR)-nanoclay composites were synthesized using methylene diphenyl diisocyanate, polyol, and hectorite clay. (hindawi.com)
  • The degradation mechanism of polyurethanes and their POSS composites was previously analyzed. (springer.com)
  • Long fiber injection (LFI) is an important development of polyurethane composites. (jeccomposites.com)
  • Russell, S.J. Mechanical Properties of Nonwoven Reinforced Thermoplastic Polyurethane Composites. (mdpi.com)
  • APAC was the largest market for MDI, TDI & polyurethane in 2020, in terms of value. (prnewswire.com)
  • China Polyurethane Foam Adhesive manufacturers - Select 2020 high quality Polyurethane Foam Adhesive products in best price from certified Chinese Adhesive manufacturers, PU Foam suppliers, wholesalers and factory on Made-in-China.com 4.9 out of 5 stars 24. (dreamcast-scene.com)
  • Automated parallel polyurethane dispersion synthesis and characterization. (thefreelibrary.com)
  • citation needed] Polyurethane products often are simply called "urethanes", but should not be confused with ethyl carbamate, which is also called urethane. (wikipedia.org)
  • The chemical ingredients are combined together to undergo chemical reaction to form silanol-functionalized urethane prepolymers that cure at ambient temperatures in the presence of moisture to form a polysiloxane polyurethane composition having enhanced properties of chemical and weather resistance, high tensile and tear strength, and high elongation. (google.com)
  • Polyurethane synthesis, wherein the urethane groups -NH-(C=O)-O- link the molecular units. (wikipedia.org)
  • Polyurethane is a synthetic resin composed of organic units connected by a urethane linkage. (prnewswire.com)
  • The method involves the steps of applying a solvent for the polyamide, applying a solvent for the polyurethane and extruding on a poly-urethane jacket or sheath. (google.es)
  • Exhibitors are also set to reveal a wide range of polyurethane innovations from stands across the exhibition hall at the MECC. (businesswire.com)
  • Due to our material slitting capabilities, we can offer our customers a range of polyurethane foam rolls thicknesses. (dreamcast-scene.com)
  • 3M™ Polyurethane Protective Tape 8545HS is a matte black, 42 mil, leading edge erosion protection tape comprised of a tough polyurethane backing and a high shear acrylic adhesive. (3m.com)
  • With very strong scratch, tear, erosion and puncture resistance that comes from the thick polyurethane backing, this tape also includes a high shear strength acrylic adhesive. (3m.com)
  • As an adhesive, polyurethane resists moisture and heat, so it is ideal for use in the sun or underwater. (wisegeek.com)
  • Biodegradable, anti-adhesive and tough polyurethane hydrogels crosslinked by triol crosslinkers. (nih.gov)
  • High-quality Polyurethane Foam Adhesive 1. (burrillandco.com)
  • Neoprene solvent based sprayable contact adhesive for polyurethane foam with excellent durability. (dreamcast-scene.com)
  • Pu foam Expansion Spray Gap Filler adhesive polyurethane foam sealant tube/gun type for aluminum. (dreamcast-scene.com)
  • We also stock a wide range of acrylic and synthetic rubber tapes, which enables us to manufacture self-adhesive polyurethane foam roll products, custom-made for bespoke applications. (dreamcast-scene.com)
  • Alibaba.com offers 2,767 polyurethane spray adhesive products. (dreamcast-scene.com)
  • The samples were cured under a pressure of 0.018 MPa Terostat 8596 polyurethane adhesive was applied â ¦ Self Adhesive PU/PE/EPE/Nitrile Foam Being a prominent company of the market, we are engaged in offering a wide assortment of Self Adhesive Nitrile Foam. (dreamcast-scene.com)
  • iBayx Traceless Washable Adhesive,Removable Reusable Adhesive Gel Grip Tape Duty Double Sided Tape Clear Silicone Tape for Paste Photos Fix Carpet Mats Pen Key (3.28FT/1METERS), Loctite PL S20 Self-Leveling Concrete Crack Sealant 28-Ounce Cartridge (1618172), Dap 18816 Polyurethane Construction Adhesive and Sealant, 10.1 oz, Great Stuff 99108240 2 PK Smart Dispenser Sealant, Gray, Sikaflex Self-Leveling Sealant, 10.1 fl. (dreamcast-scene.com)
  • Spraybond X100 Foambond 750 ml Zettex Spraybond X100 Foambond is a one component polyurethane foam adhesive Response must be less that 100,000 characters. (dreamcast-scene.com)
  • Handi-Stick® General Use low pressure one-component polyurethane foam adhesive spray is a moisture cured, multi-purpose adhesive designed to create an extremely strong, permanent bond between various types of building materials. (dreamcast-scene.com)
  • Bondtech N147 is a sprayable contact adhesive specifically formulated for the bonding of flexible polyurethane foam. (dreamcast-scene.com)
  • 156-244 11 Claims ABSTRACT OF THE DISCLOSURE A method of bonding polyurethane to plastics, e.g., polyamides, and a hose comprised of a polyamide inner tubing, a braided jacket, and a polyurethane outer sheath are disclosed. (google.es)
  • Abstract The synthesis of waterborne polyurethane dispersions (PUDs) using an automated parallel reactor system was explore. (thefreelibrary.com)
  • 3M™ Polyurethane Protective Tape 8545HS is a matte black thermoplastic polyurethane elastomer tape designed to provide premium leading edge erosion protection. (3m.com)
  • Some polyurethane is categorized as an elastomer . (wisegeek.com)
  • Established in 2007,Yantai Zhengyuan Polyurethane Co., LTD. is a high-tech enterprise dedicating to the research, production and sales of polyurethane elastomer. (tradekey.com)
  • With the most advanced polyurethane elastomer production equipment in China and a group of professional and technical personnel engaging in polyurethane producing for many years, the company can design and produce various high-precision polyurethane products by good materials, perfect processing and advanced formula according to customer's need. (tradekey.com)
  • MDI (methylene diphenyl diisocyanate) and TDI (toluene diisocyanate) are diisocyanates, which are primarily used as raw materials for polyurethane. (prnewswire.com)
  • Polyurethane is made when methylene diphenyl diisocyanate (MDI) and toluene diisocyanate (TDI) react with polyols. (participatorymuseum.org)
  • Although they have excellent environmental credentials, waterborne polyurethane dispersions tend to suffer from lower mechanical strength than other resins. (wikipedia.org)
  • They are also used in the design and manufacture of medical devices such as the polyurethane dressing, a liquid bandage based on polyurethane dispersion. (wikipedia.org)
  • Accordingly anyone involved in the manufacture and supply of these polyurethane parts must be ahead of the game, making a visit to the UTECH event a valuable experience: in just three days they can meet with and discuss the very latest developments with representatives from most of the world's key specialists. (theautochannel.com)
  • 11. A method of manufacture according to claim 8, wherein the foaming mixture further comprises a polyurethane or polyurea chain terminating compound, selected from monohydric alcohols and amines. (freepatentsonline.com)
  • Seal and gasket manufacturer Seal & Gasket Supplies now uses large-diameter semifinished raw materials in nitrile butadiene rubber and hydrolysis-resistant polyurethane (HPU) in the manufacture of its seal products. (engineeringnews.co.za)
  • Soy-based, polyurethane liquid spray-foam products are also available. (daviddarling.info)
  • These products can be applied with the same equipment used for petroleum-based polyurethane foam products. (daviddarling.info)
  • Show all 59 recent products that contain POLYURETHANE-11. (ewg.org)
  • Conference delegates and other UTECH visitors can also seek out the latest products and solutions for manufacturing polyurethane-based automotive components in the UTECH Europe exhibition which runs alongside the conference. (theautochannel.com)
  • The 'Polyurethane Chemicals and Products in South America 2018 - Volume 3 Rigid Foam' report has been added to ResearchAndMarkets.com's offering. (prnewswire.com)
  • There are thousands of possible combinations of the basic building blocks used to create aromatic and aliphatic polyurethanes, thereby providing device engineers with a myriad of options for their products. (mddionline.com)
  • Used for a variety of different product applications in commercial or domestic appliances and products Polyurethane Foam is easy to mould to your specifications. (ferret.com.au)
  • The development of polyurethanes made using renewable biomass carbon from natural oils, sugars or waste carbon dioxide provides an excellent example of the replacement of petroleum derived products. (biofuelsdigest.com)
  • Global demand for polyurethane products approximated 20 million tons in 2014. (biofuelsdigest.com)
  • The wide variety of polyurethane applications provides many appropriate size niche markets for introduction of new products. (biofuelsdigest.com)
  • Materials with a performance rivaling or exceeding petroleum-based products are available Sustainable polyols are currently capable of replacing 33-55% of the petrochemical in polyurethanes. (biofuelsdigest.com)
  • A more accurate definition should read: 'Polyurethanes are macro-molecular products, the result of polyadition reactions of isocyanates with polyols. (wisegeek.com)
  • Major players like BASF, Dow Chemical, Bayer and Huntsman are expected to provide revolutionary polyurethane-based products and technologies in the near future. (bccresearch.com)
  • Georgia Foam Solutions Inc. in Albany, GA, uses the best in polyurethane spray foam products. (participatorymuseum.org)
  • Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. (3m.com)
  • Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. (3m.com)
  • With their outstanding thermal conductivity, RAMPF polyurethane and silicone resins ensure that heat is efficiently dissipated from components and the required mechanical flexibility maintained. (openpr.com)
  • new ultra-low VOC surfactants, non-emissive catalysts and aldehyde scavengers for automotive polyurethane applications and a new silicone surfactant with extremely wide processing latitude. (businesswire.com)
  • Both the isocyanates and polyols used to make polyurethanes contain, on average, two or more functional groups per molecule. (wikipedia.org)
  • This is the page where you the netsurfer will learn how to make polyurethanes! (pslc.ws)
  • To start off, we make polyurethanes from two monomers, a diol and a diisocyanate. (pslc.ws)
  • 2017. "Dual-Emissive Waterborne Polyurethanes Prepared from Naphthalimide Derivative. (mdpi.com)
  • United States Waterborne Polyurethane Market Report 2017 Analysis. (mynewsdesk.com)
  • Polyurethanes are made from either aromatic or aliphatic diisocyanates. (mddionline.com)
  • Polyurethane dispersions (PUDs) are widely used waterborne binder systems in the coating industry. (thefreelibrary.com)
  • A hydrophilic, segmented polyether polyurethane-urea that exhibits an increase in tensile strength and elongation when wet with water and is capable of forming visually clear films permeable to water vapor is disclosed. (google.com.au)
  • 2. The segmented polyether polyurethane-urea of claim 1 wherein said admixture of polyalkylene ether glycols is constituted by polytetramethylene glycol and polyethylene glycol. (google.com.au)
  • 3. The segmented polyether polyurethane-urea of claim 2 wherein polytetramethylene glycol and polyethylene glycol are present in the admixture in a mole ratio of about 3:1. (google.com.au)
  • 4. The segmented polyether polyurethane-urea of claim 1 wherein said relatively shorter segment glycol have a molecular weight in the range of about 1000 to about 3,000 and said relatively longer segment glycol has molecular weight of at least about 800. (google.com.au)
  • 5. The segmented polyether polyurethane-urea of claim 1 wherein said glycols have a number average molecular weight of about 2000. (google.com.au)
  • 7. The segmented polyether polyurethane-urea of claim 6 wherein the polyalkylene ether glycol having the relatively shorter alkyleneoxy segments constitutes at least about 10 mole percent of the admixture and the polyalkylene ether glycol having the relatively longer alkyleneoxy segments constitutes more than about 50 mole percent of the admixture. (google.com.au)
  • 8. The segmented polyether polyurethane-urea of claim 1 wherein the polyalkylene ether glycol having the relatively longer alkyleneoxy segments and the polyalkylene ether glycol having the relatively shorter alkyleneoxy segments are present in a mole ratio of about 3:1, respectively. (google.com.au)
  • This invention relates to a segmented polyether polyurethane-urea resin having certain controlled physical properties, and in particular to a segmented polyether polyurethane-urea resin that exhibits an increase in tensile strength and elongation when wet with water and that can be formed into a visually clear film that is permeable to water vapor and is hydrophilic. (google.com.au)
  • Electron Impact (EI) and Chemical Ionization (CI) Gas Chromatography Mass Spectrometry (GC/MS) were used to identify unknowns in the extracts of the interior automobile polyurethane components. (sae.org)
  • Moreover, significant expansion from Bayer and Dow Chemical in APAC will help expand the scope for polyurethanes. (bccresearch.com)
  • Fisherbrand Polyurethane Chairs feature a soil-, chemical- and puncture-resistant polyurethane top, nylon-reinforced fiberglass base and stationary glides. (fishersci.com)
  • Imron polyurethane enamel is a high-quality paint and finish with notable durability, chemical resistance and long-lasting glossiness. (reference.com)
  • Always use chemical resistant gloves when working with polyurethane. (reference.com)
  • A highlight of the conference's plenary session looking at key strategic and market developments is Jon Penrice, VP Polyurethanes at Dow Chemical, whose keynote is entitled Emotion and function-creating value via marketing the innovation . (businesswire.com)
  • The research methodology used to estimate and forecast the size of the polyurethane foam market began with capturing data on key vendor revenues through secondary sources, such as Hoovers, Bloomberg, Chemical Weekly, Factiva, and various other government and private websites. (marketsandmarkets.com)
  • Companies operating in the polyurethane foam market include BASF SE (Germany), Covestro (Germany), The Dow Chemical Company (US), and Huntsman Corporation (US). (marketsandmarkets.com)
  • There are many different polyurethane blends and resin types, [3] which vary in durability, resistance to heat, ambient humidity, and light, [2] and the maximum temperature they will stand (some, for medical use, are autoclavable). (wikipedia.org)
  • The high thermal resistance of the gas gives polyurethane insulation materials an R-value typically around R-7 to R-8 per inch. (daviddarling.info)
  • Polyurethane is a type of varnish with a resin that adds heat-, scratch-, water- and solvent resistance to the wood on which it's applied. (ehow.com)
  • HRS seals are made of G-ECOPUR, a polyurethane with excellent abrasion resistance and tear strength ( Fig. 2 ). (skf.com)
  • HPU is a grade of polyurethane that has a far higher degree of resistance to hydrolysis than standard grades of polyurethane, which tend to show signs of degradation faster when in contact with water, water-based hydraulic fluids and water-contaminated hydraulic fluids. (engineeringnews.co.za)
  • The polyurethane cover provided for the hose contributes wear resistance and external smoothness, without unduly limiting the flexibility of the hose. (google.es)
  • The polyurethane coating establishes a relatively smooth outer surface for the hose, thus improving its resistance to dirt and making it easier to clean. (google.es)
  • In addition, increased adoption of biodegradable polyurethane material is also creating buzz in the health care sector. (bccresearch.com)
  • In this work, a series of biodegradable polyurethane (PU) hydrogels were successfully synthesized using two kinds of triol crosslinkers with different chain structures. (nih.gov)
  • Since polyurethanes contain two types of monomers, which polymerise one after the other, they are classed as alternating copolymers. (wikipedia.org)
  • In this way, monomers and oligomers combine and combine until we get a high molecular weight polyurethane. (pslc.ws)
  • Polyurethane-11 is a copolymer of Adipic Acid (q.v.), 1, 4-Butanediol (q.v.)., isophthalic acid, methylene bis-(4-cyclohexylisocyanate), Neopentyl Glycol (q.v.) and trimethylolpropane monomers. (ewg.org)
  • Usually diamine chain extender is then added to produce a polyurethane dispersed in water with no free NCO groups but with polyurethane segments. (wikipedia.org)
  • Polyurethanes are made from three basic building blocks: the backbone, the diisocyanate, and the chain extender. (mddionline.com)
  • said polyurethane-urea being the reaction product of a prepolymer derived from a stoichiometric excess of a diisocyanate reacted with an admixture of polyalkylene ether glycols each having different-length alkyleneoxy segments, and extended with a difunctional amine chain extender. (google.com.au)
  • Polyisocyanates became commercially available in 1952, and production of flexible polyurethane foam began in 1954 using toluene diisocyanate (TDI) and polyester polyols. (wikipedia.org)
  • The present invention relates to a multi-stage process for the continuous preparation of thermoplastically processable polyurethanes with improved processing properties based on various polyols. (google.com)
  • Because a variety of diisocyanates and a wide range of polyols can be used to produce polyurethane, a broad spectrum of materials can be produced to meet the needs of specific applications. (biofuelsdigest.com)
  • The renewable polyols have been available for about a decade, and market for these and other renewable polyurethanes is anticipated to grow to $10.3 billion in 2023. (biofuelsdigest.com)
  • Polyurethane laminate ( PUL , thermal stretch , [1] fuzzy rubber [1] ) is a compound fabric made by laminating a cloth fabric to one or both sides of a thin film of polyurethane. (wikipedia.org)
  • Polyurethane foam (including foam rubber) is sometimes made using small amounts of blowing agents to give less dense foam, better cushioning/energy absorption or thermal insulation. (wikipedia.org)
  • Foil and plastic facings on rigid, polyurethane foam panels can help stabilize the R-value, preventing thermal drift. (daviddarling.info)
  • The polyurethane in this hollow-fiber filter by CHF Solutions (Brooklyn Park, MN) separates the membranes to let blood and medicine flow through it without interacting. (mddionline.com)
  • Apply a thin first coat of polyurethane to the object with a foam or a bristle brush (foam brushes leave fewer, if any, streaks). (ehow.com)
  • Clean the sanded wood surface with a tack cloth before applying the first coat of polyurethane. (ehow.com)
  • The development of polyurethane nanocomposites was first reported by Wang and Pinnavaia in 1988 [ 8 ]. (hindawi.com)
  • AWF PRO Gaps and Cracks Kit - Great Stuff Pro Gaps & Cracks Polyurethane Foam Sealant 24 oz (2) - AWF Pro Foam Gun (1) - Great Stuff Pro Foam Gun Cleaner (1), Gloves (1) - Closed Cell Expanding Foam. (participatorymuseum.org)
  • 3M™ Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments. (3m.com)
  • 3M™ Polyurethane Sealant 540 is a single-component, moisture-curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. (3m.com)
  • 3M™ Polyurethane Sealant 540 (PDF, 371.52 Kb) offers an alternative to mechanical fasteners and can replace rivets in some applications. (3m.com)
  • Polyurethane Foam spray is dispensed as a frothy liquid which expands and cures into a solid foam (Like Thermocol) insulation and sealant. (participatorymuseum.org)
  • Where can I apply Polyurethane foam spray sealant? (participatorymuseum.org)
  • LONDON & MAASTRICHT, The Netherlands--( BUSINESS WIRE )--Global market trends and the latest technical, legislative and commercial innovations in polyurethanes (PU) technology will be discussed in detail at the UTECH Europe 2018 exhibition and conference next week (29-31 May) in Maastricht, The Netherlands. (businesswire.com)
  • The global polyurethane market should reach $68 billion by 2021 from $49.8 billion in 2016 at a compound annual growth rate (CAGR) of 6.4%, from 2016 to 2021. (bccresearch.com)
  • APAC is the largest consumer and producer of polyurethanes, and holds 36% of the global polyurethane market. (bccresearch.com)
  • Segmented polyurethanes are prepared from hydroxyl terminated low molecular weight polyethers or polyesters or mixtures thereof by reacting these materials with a stoichiometric excess of a diisocyanate to produce an isocyanate terminated prepolymer. (google.com.au)
  • The polyurethane foam market has a diversified ecosystem of upstream players, including raw material suppliers, along with downstream stakeholders, vendors, and government organizations. (marketsandmarkets.com)
  • Get info of suppliers, manufacturers, exporters, traders of Polyurethane Foam Spray for buying in India. (participatorymuseum.org)
  • [1] [2] Polyurethane laminated fabrics have a wide range of applications in medical, automotive and garment uses. (wikipedia.org)
  • Sprayed or foamed-in-place applications of polyurethane insulation are usually cheaper than installing foam boards. (daviddarling.info)
  • Polyurethanes are used often in medical device applications, and their use continues to grow. (mddionline.com)
  • The answer is quite simple: polyurethanes can be used in applications where other materials do not work. (mddionline.com)
  • The ease of processing with relatively low tooling and manpower costs, as well as flexibility for long and short production runs, makes polyurethanes desirable for various applications [ 2 ]. (hindawi.com)
  • Polyurethane is a resilient, flexible and durable manufactured material that can take the place of paint, cotton , rubber, metal or wood in thousands of applications across virtually all fields. (wisegeek.com)
  • The excellent radiation stability of polyurethanes [ 13 ] and their large processing dose range [ 14 ] recommends them for long-term applications. (springer.com)
  • A look at end users and applications of polyurethanes. (bccresearch.com)
  • Polyurethane is the most commonly used material in various applications for the automotive, furniture and bedding, electronics, construction and building, and footwear industries. (bccresearch.com)
  • The U.S. and E.U. regions are projected to increasingly consume polyurethane applications in the construction and building sector for energy-efficient insulation in residential buildings. (bccresearch.com)
  • Moreover, adoption of new technologies and applications in the global furniture and bedding, building and construction and automobile markets are expected to boost polyurethane demand in the near future. (bccresearch.com)
  • Graco's next generation polyurethane spray foam equipment is designed for low to medium, to high output spray applications. (participatorymuseum.org)
  • Flexible polyurethane foam (FPF) affects our lives in many ways and new applications are rolling out on a regular basis. (participatorymuseum.org)
  • For smaller jobs, take insulation into your own hands Polyurethane spray foam insulation is ideal for a range of residential, commercial and industrial applications. (participatorymuseum.org)
  • Defthane Aerosol Clear Polyurethane, Gloss, 13-oz. (truevalue.com)
  • A sophisticated combination of fillers reduces the weight of the parts by 20 to 30 percent compared with conventional polyurethane solutions while retaining the mechanical properties, Bayer claims. (theautochannel.com)
  • In this report, the United States Waterborne Polyurethane market is valued at USD XX million in 2016 and is expected to reach USD XX million by the end of 2022, growing at a CAGR of XX% between 2016 and 2022. (mynewsdesk.com)
  • Although rubber is a cheaper alternative in the manufacturing of seals, many contractors are using polyurethane, as it remains sturdy in abrasive environments, which far outweighs cost concerns, he points out. (engineeringnews.co.za)
  • A polysiloxane polyurethane composition is prepared by combining in the presence of water and in a predetermined proportion an organic di- or polyisocyanate, a polyol, an hydroxyl-containing silicon material having the hydroxyl groups attached directly to a silicon atom, an organotin catalyst, an amine. (google.com)
  • Depending on the different diisocyanates and diol or polyol constituents, the resulting polyurethane might be in the form of a liquid, foam or solid. (wisegeek.com)
  • Aromatic diisocyanates contain benzene rings, which create polyurethanes that are generally tougher, stronger, and less costly than the aliphatics. (mddionline.com)
  • Union Carbide and Mobay, a U.S. Monsanto/Bayer joint venture, also began making polyurethane chemicals. (wikipedia.org)
  • The 5000 polyurethane enamel has advanced UV screeners and light stabilizers that help it withstand weathering and exposure to industrial chemicals. (reference.com)
  • There are two processes used for lamination: solvent lamination, which fuses the fabric and polyurethane film into a single monolithic fabric, and hot melt, which uses heat-activated glue to adhere the fabrics together. (wikipedia.org)
  • Today, when a woodworker says "poly," the polyurethane under discussion is a tough, moisture-resistant film finish available in various levels of gloss. (popularmechanics.com)
  • The moisture also caused the density of the polyurethane in the polyurethane-aggregate mixture to be less than the design requirements. (cdc.gov)
  • The cross-linked polyurethane nanocomposites formed by in situ polymerization showed clay particles in intercalated state with a d-spacing of 5 nm and significant improvement in properties such as tensile strength, tensile modulus, and strain at break. (hindawi.com)
  • 1.8-2 pound polyurethane foam has the highest R-value of readily available spray foam insulation used in homes and buildings. (participatorymuseum.org)
  • Since its invention during the 1940s, polyurethane has been used in a wide range of items, from baby toys to airplane wings, and it continues to be adapted for contemporary technology. (wisegeek.com)
  • This invention relates to a method for bonding polyurethane to plastic material especially the class of plastic known as nylons or polyamides, although certain aspects of the invention are applicable to the bonding of polyurethane to other materials. (google.es)
  • Thus the invention is concerned with the formation of composite structures of laminates, exploiting the desirable properties of both the polyurethane and the material to which it is bonded such as polyamide, in a possibly synergistic manner. (google.es)
  • From the foregoing, it can be seen that while the invention is particularly useful in improving the construction of plastic hose, in its more general aspects it comprises a solution to the problem of obtaining a strong, secure bond between polyurethane and nylon. (google.es)
  • According to this invention an improved pressure hose having a braided cover is provided in which the braid 3,489,631 Patented Jan. 13, 1970 ice is covered and protected by a thin, flexible, tough, securely bonded polyurethane coating. (google.es)
  • In accordance with the invention, a securey bond is achieved between polyurethane and nylon, whether it be in the form of a ber braid or in another form, by taking special steps to insure that the bond between the two materials is, in large part, based on hydrogen association bonds at the interface. (google.es)