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 broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)
Organic salts of cyanic acid containing the -OCN radical.
A generic term for all substances having the properties of stretching under tension, high tensile strength, retracting rapidly, and recovering their original dimensions fully. They are generally POLYMERS.
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.

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 ...
Clear Oil-Based Interior Satin Butcher Block Wood Sealer Topcoat (59) When scratches occur on oiled floors, you can buff and blend them away very easily without removing the furnishings. Putting Polyurethane on Laminate. Should Polyurethane for Floors be sanded between coats? Varathane manufactures polyurethane products specifically for use on floor projects. Want to see the floor cleaning products I recommend? The water based polyurethane can provide you pretty good durability, and thats amazing for your floor. The best and most durable finish for water based polyurethane is Bona Traffic HD and for oil based poly, Duraseal. The high-quality polyurethane keeps the shine of your floor … Due to huge varieties - polyurethane, varnish, paint, etc. The high performance pigmented top coat provides the durability in high traffic areas as … You can see all my recos on my Amazon Influencer page. Polyurethane can bring out a beautiful color in your hardwood floor, in addition to protecting it from ...
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 ...
Polyurethane Products - High Density Polyurethane (the only kind we sell) is exceptionally stable and durable. Itâ s a very versatile material that can be used for many applications. There are a wide variety of hydroxyl and/or amine-containing raw materials (often called polyols or co-reactants) available for reaction with isocyanate-containing raw materials. Over three quarters of the global consumption of polyurethane products is in the form of foams, with flexible and rigid types being roughly equal in market size. Soy-based, polyurethane liquid spray-foam products are also available. For instance, it can add waterproofing to pedestrian decks, water tanks, ponds, balconies, roofs, bridges, parking decks, and so much more. There are 14 types of rubber in general use. One of the most common ways to classify polyurethane elastomers is by hardness. Elastomeric memory allows polyurethane to return to its original shape when stretched, bent or deformed; Superior durability and resiliency at harder ...
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.. ...
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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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No, not in terms of the finishing at least. Its important if you want to make stuff that has low VOC emissions of course but doesnt appear to make any difference to how a finish dries, cures or maintains over time which is not surprising given the very slow outgassing of the formaldehyde.. FYI, polyurethane isnt enough of a description if you dont go on to clarify the exact type of product you used, as you did in the body of the Question. This is because there are multiples types of polyurethane finish and they are very different indeed. Waterbased polys are actually nothing like real polyurethane, oil-based polyurethane varnish. They are acrylic-suspension finishes with a little added polyurethane, and are not varnish in the true sense of the word despite being called that by many manufacturers. Basically the same product might be called acrylic lacquer by another maker and they name would be just as accurate.. ...
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 ...
The Canadian Urethane Foam Contractors Association (CUFCA) specializes in sprayed polyurethane foam insulation. Their goal is to champion the Polyurethane Foam Industry as a whole, while sustaining high industry standards and encouraging ongoing professional development.
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.
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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〉 ...
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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 ...
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Any Program Credit Cards that are issued to a Member will also be linked to that Members Triangle Rewards Account. I started using the spray polyurethane on several small projects a few years ago and I absolutely love it. Clear Gloss Spar Urethane Spray Paint (6-Pack) Model# 250081 $ 45 07 This is a water-based polyurethane spray, which means that it dries more quickly and can be cleaned easily with some soap and water. Lasts twice as long as varnish. Sorry no rainchecks (excluding Quebec). Oil-Modified Clear Semi-Gloss Oil-Modified Polyurethane (1-Gallon) Item #2517110. Our Privacy Charter may be amended from time to time. You cannot collect paper Canadian Tire Money on bonus offers. Smooth, brush-free finish; Ideal for furniture, countertops, cabinets and more Items may be display models or not exactly as shown and may not be available in all stores. While you do not necessarily have to sand between coats of polyurethane, it is always advisable as it will increase the adhesion between the ...
Premier Custom Surfacing Inc offers several polyurethane resin binders for our various poured-in-place systems. Developed by French and German companies for playground use in the early 1970s, aromatic (MDI) polyurethane is the number one choice for sport surfaces & playgrounds and has been used by Premier Custom Surfacing Inc for both residential and commercial projects. Aliphatic (HDI) polyurethane has become very popular in the last 5 years due to its ability to prevent ambering during the curing process. Premier Custom Surfacing Inc also offers an aromatic polyurethane for use on driveways and garages. ...
It contains 100% urethane, with the latest this deft product is formulated with the latest water-based oil technology. As a result, it offers your wooden floor a top of the class protection. This polyurethane formula improves the look of your wooden … It takes this formula just 2 hours to dry to touch. VOC compliant in most areas. Minwax 710330000 Water Based Oil-Modified Polyurethane, gallon, Satin, One thing about this polyurethane finish is that it contains elements of. With time, the finishes on the floor lose the spark and would need refinishing to restore the beauty. Other products on this list are equally effective. Bona Mega Wood Floor Finish Satin 1 Gallon. As a general rule, Bona Traffic HD costs about twice as much as Bona Mega.. And, there is a good reason for that as youll read below. Furthermore, you can use a piece of cotton cloth for application; this will also help prevent dripping. One thing about this polyurethane finish is that it contains elements of volatile organic ...
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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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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The invention discloses a preparation method of antibacterial and mildew-proof TDI (toluene diisocyanate) memory polyurethane foam. The preparation method comprises the following steps of: 1) impregnating white mica powders in hydrogen peroxide to obtain expansion white mica powders after treatment; 2) adding the expansion white mica powders from the step 1 to trisodium phosphate solution to obtain a solid product after treatment; 3) adding the solid product from the step 2 to AgNO3 solution to obtain a solid-supported silver mica antibacterial agent after stirring and post-treatment; 4) adding the product from the previous step to the mixed solution of a diluting agent and a coupling agent for mixing, and then stirring to obtain a plastic antibacterial agent; and 5) adding the plastic antibacterial agent and a mildew-proof agent to a reaction kettle of butter PPG (Polypropylene Glycol) to realize dissolution by stirring, then adding a variety of accessories and TDI, stirring at high speed and
Add sparkle to tumblers, epoxy resin arts and crafts. Hemway Polyurethane and Epoxy Glitter has Enhanced Colour Vibrancy. Create stunning light reflecting effects in your epoxy resin projects. This glitter is specifically designed to shine bright in all polyurethane & epoxy uses. The glitter crystals reflect light and disperse flecks of beautiful colour, sure to amaze anyone who sees it. Solvent and UV resistant, this highly pigmented glitter will keep its colour forever. Solvent & Heat Resistant - withstands temperatures up to 230°C / 446°F. Fade Resistant. Clump Free - Glitter disperses evenly. Child Safe. Non Toxic. Vegan & Cruelty Free. Using Glitter in Epoxy Resin: Create stunning effects in flooring, resin tables, epoxy tumblers and craft projects. Simple, quick & easy to use! Just sprinkle into your epoxy resin. Recommended ratio - 100g / 3.5oz per 1 Litre / Quart Gallon of Polyurethane or Epoxy Resin. First of all, pour the glitter into the resin product & mix thoroughly for 1
Add sparkle to tumblers, epoxy resin arts and crafts. Hemway Polyurethane and Epoxy Glitter has Enhanced Colour Vibrancy. Create stunning light reflecting effects in your epoxy resin projects. This glitter is specifically designed to shine bright in all polyurethane & epoxy uses. The glitter crystals reflect light and disperse flecks of beautiful colour, sure to amaze anyone who sees it. Solvent and UV resistant, this highly pigmented glitter will keep its colour forever. Solvent & Heat Resistant - withstands temperatures up to 230°C / 446°F. Fade Resistant. Clump Free - Glitter disperses evenly. Child Safe. Non Toxic. Vegan & Cruelty Free. Using Glitter in Epoxy Resin: Create stunning effects in flooring, resin tables, epoxy tumblers and craft projects. Simple, quick & easy to use! Just sprinkle into your epoxy resin. Recommended ratio - 100g / 3.5oz per 1 Litre / Quart Gallon of Polyurethane or Epoxy Resin. First of all, pour the glitter into the resin product & mix thoroughly for 1
Add sparkle to tumblers, epoxy resin arts and crafts. Hemway Polyurethane and Epoxy Glitter has Enhanced Colour Vibrancy. Create stunning light reflecting effects in your epoxy resin projects. This glitter is specifically designed to shine bright in all polyurethane & epoxy uses. The glitter crystals reflect light and disperse flecks of beautiful colour, sure to amaze anyone who sees it. Solvent and UV resistant, this highly pigmented glitter will keep its colour forever. Solvent & Heat Resistant - withstands temperatures up to 230°C / 446°F. Fade Resistant. Clump Free - Glitter disperses evenly. Child Safe. Non Toxic. Vegan & Cruelty Free. Using Glitter in Epoxy Resin: Create stunning effects in flooring, resin tables, epoxy tumblers and craft projects. Simple, quick & easy to use! Just sprinkle into your epoxy resin. Recommended ratio - 100g / 3.5oz per 1 Litre / Quart Gallon of Polyurethane or Epoxy Resin. First of all, pour the glitter into the resin product & mix thoroughly for 1
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 ...
Common Name: Polyurethane. Chemical name: PU. Brand Names: Nolathane. Description: Polyurethanes are used in the manufacture of high-resilience foam seating, rigid foam insulation panels, microcellular foam seals and gaskets, durable elastomeric wheels and tires (such as roller coaster, escalator, shopping cart, elevator, and skateboard wheels), automotive suspension bushings, electrical potting compounds, high performance adhesives, surface coatings and surface sealants, synthetic fibres (e.g., Spandex), carpet underlay, hard-plastic parts (e.g., for electronic instruments) and hoses.. Properties: ...
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
High-performance precision molds made of polyurethane, developed by RAMPF Polymer Solutions and WASA Compound GmbH & Co. KG, play an important role in the gigantic railway project Crossrail in London. Find out more about the project and how facade panels are produced. Its a huge construction project: the Crossrail railway project, launched in 2009, encompasses a new 118 km long rail network to strengthen the current infrastructure of the London metropolitan region.. Crossrail includes the construction of eight new underground stations. For the current construction phase at Bond Street Station, the Lindner Group, a leading manufacturer and contractor for building envelope, interior fit-out, and insulation, is supplying the facade panels made of glass fiber concrete. Lindner Group awarded the contract to supply the precast molds for the production of the facade panels to WASA Compound, the specialist for large-format liners and molds made of high-quality polyurethane ...
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
Single Pack. Koverflor Type F is an outstanding polyurethane based, quick drying, single pack floor paint. It gives a tough abrasion resistance finish and can be applied to clean, dry mature concrete, brickwork, quarry tiles, stone, wood and linoleum.. This oil and petrol resisting paint prevents cement based floors from dusting up and comes highly recommend for many businesses. Its especially used in garage workshops, showrooms, offices, corridors and high volume pedestrian traffic areas that are subject to hard wear.. ...
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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Polyurethanes contain multiple carbamate groups as part of their structure. The "urethane" in the name "polyurethane" refers to ... Polyurethane polymers have a wide range of properties and are commercially available as foams, elastomers, and solids. ... Typically, polyurethane polymers are made by combining diisocyanates, e.g. toluene diisocyanate, and diols, where the carbamate ... In contrast, the substance commonly called "urethane", ethyl carbamate, is neither a component of polyurethanes, nor is it used ...
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 ...
PPG is used in many polyurethane formulations. Synthesis of waterborne polymers has been a feature with this substance. As the ... "Polyurethanes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a21_665.pub2. Peretti ... 2020-06-15). "Biodegradable polyurethanes foam and foam fullerenes nanocomposite strips by one-shot moulding: Physicochemical ... based polyurethane prepolymer by matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF)-mass spectrometry". ...
Isocyanate Polyurethane Polyurethane dispersion Wicks, Zeno W. (1975-03-01). "Blocked isocyanates". Progress in Organic ... The use of sodium bisulfite as a blocking agent has also allowed them to be used in Waterborne resins such as Polyurethane ... It may also be a polyurethane prepolymer that is NCO terminated but this functionality has also been chemically reacted with a ... They are usually used in polyurethane applications but not always. They are extensively used in industrial applications and ...
"Classic PU Patent of the Month: Polyurethane-Polyurea RIM Elastomers (Bayer 1976)". Innovation in Polyurethanes. 2014-12-22. ... DETDA is one such amine and is used extensively in reaction injection molding (RIM) and in polyurethane and polyurea elastomer ... It is also used extensively in polyurethanes and in both spray polyureas and elastomers. When used in elastomer production ... US 4581433, Potter, Terry A.; Markusch, Peter H. & Prepelka, David J., "Elastomer polyurethane-polyurea coatings based On bis(4 ...
The major application of 4,4′-MDI is the production of rigid polyurethane. These rigid polyurethane foams are good thermal ... US patent 6884904, Smith, A. K.; Goddard, R. J.; Paulsen, E. J. L., "MDI-based polyurethane prepolymer with low monomeric MDI ... 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 ...
Howarth, GA (July 2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings ... Randall, David; Lee, Steve (2002). The Polyurethanes Book. New York: Wiley. ISBN 978-0-470-85041-1. Jeffries, Michael; Gambino ...
It is used in the production of rigid polyurethane foams with a high temperature stability. The LD50 for TDI is 5800 mg/kg for ... The Polyurethanes Book. New York: Wiley. ISBN 978-0-470-85041-1. Six, C.; Richter, F. "Isocyanates, Organic". Ullmann's ...
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". Polyurethanes. Archived from the original on 2016-08-26. Retrieved 2016-08-03. " ... 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 ...
ISBN 9783527306732.{{cite encyclopedia}}: CS1 maint: uses authors parameter (link) The polyurethanes book. Randall, David, Lee ... Steve, 1941-. [Everberg, Belgium]: [Huntsman Polyurethanes]. 2002. ISBN 0470850418. OCLC 50479333.{{cite book}}: CS1 maint: ...
"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 ...
Polyurethane. The first polyurethane condoms, designed for people with latex allergies, were produced in 1994. Some people are ...
"Artificial Heart , PDF , Polyurethane , Polymers". Scribd. Retrieved 2022-05-16. Wong, Joyce Y.; Bronzino, Joseph D.; Peterson ...
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 ...
Polyurethane (PU) foams are highly versatile engineering materials used for a wide range of applications such as mattresses, ... "NIPU-EJD - Non-Isocyanate Polyurethanes". Retrieved 2022-06-09. Denissen, Wim; Winne, Johan M.; Prez, Filip E. Du (2015-12-17 ... Sonnenschein, Mark F. (2021). Polyurethanes: Science, Technology, Markets, and Trends, 2nd Edition. ISBN 978-1-119-66941-8. ... Typical thermosetting materials include epoxy resins, polyester resins, polyurethanes, etc. In the framework of sustainability ...
Waterborne polyurethanes are also available in 2 component versions. As a 2 component polyurethane consists of polyol(s) and an ... Polyurethanes resins are available waterborne. The single component versions are usually referred to as Polyurethane ... Howarth, GA (2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings ... "Water Based Polyurethanes Dispersions(PUDs)-An Overview". www.linkedin.com. Archived from the original on 2018-11-10. Retrieved ...
"PORON® Industrial Polyurethanes - Rogers Corporation". www.rogerscorp.com. Retrieved 2022-11-29. "Rogers Corporation and ... Rogers manufactures Poron brand industrial microcellular polyurethane. In March 2020 Rogers filed a complaint against ElastaPro ...
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 field in which SMPs are having a significant impact ... 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 ...
"Polyurethane Testing". Pleiger Plastics Company. Retrieved 2021-12-25. Handbook of the International Association of Approved ... The test for Bayshore Resilience is used to test the elasticity of polyurethanes. Under National Federation of State High ...
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 ...
Howarth, GA (2003). "Polyurethanes, polyurethane dispersions and polyureas: Past, present and future". Surface Coatings ... "Synthesis of Polyurethane Prepolymers and Damping Property of Polyurethane/Epoxy Composites". Advanced Science Letters. 4 (3): ... As an example, polyurethane foam is a big user of polyether polyols. Polyester polyols can be used to produce rigid foam. They ... In polyurethane prepolymer production, a low molecular weight polyol-diol such as 1,4-Butanediol maybe used as a chain extender ...
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 (China)). Yantai Wanhua Polyurethane. 13 December 2000. Retrieved 15 January 2020 ... 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 ... Materials other than polyurethane also have the properties necessary to make memory foam. Polyethylene terephthalate, one such ... "Polyurethane Foam Association". pfa.org. Archived from the original on 2010-01-04. Retrieved 2010-01-15. Strand, Andrea. " ...
Synthetic sponges can be made of polyester, polyurethane, or vegetal cellulose. Polyurethane is used in polyester sponges for ... "Polyurethane Sponge - Dynathane , PAR Group". www.par-group.co.uk. Retrieved 2018-04-14. Luo, Yunlong; Qi, Fangjie; Gibson, ... Matthew 27:48 "Polyurethane Foam Kitchen Sponge. History of Origin - Vortex Power". www.vortex-power.com. Retrieved 2018-04-14 ... possible to be manufactured only after the invention of polyester in the 1920s and the commercial production of polyurethane ...
... utech-polyurethane.com. Retrieved 13 February 2021.{{cite web}}: CS1 maint: url-status (link) "Kingspan Renewables buys ...
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, ...
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 ...
Polyurethane Recoil Hose retains its self-coiling properties and stores itself when finished. Can be used with all air-powered ... Polyurethane Recoil Hose retains its self-coiling properties and stores itself when finished. Can be used with all air-powered ... The soft polyurethane finish is less likely to scratch surfaces.. *1/4 in. swivel fittings ...
Hurricane Performance of Spray Polyurethane Foam Roofing. The 2004 hurricane season in Florida provided a unique opportunity to ... 1998-2017 NCFI Polyurethanes. A Division of Barnhardt Manufacturing Co. All Rights Reserved. ...
Polyurethane foam has a high R-factor (or R-value), so it resists the flow of heat and, when used as insulation, increases a ... Spray polyurethane foam-commonly referred to as SPF-is a case in point. Its use as insulation has been on the upswing because ... Spray polyurethane foam is applied as a liquid but expands as it dries. The product itself is a two-component system. The first ... Help Wanted: Spray Polyurethane Foam Insulation Research. Posted on March 21, 2012. by David A. Marlow, BS ...
Polyurethane Protective Tape 8542NA is made from an abrasion resistant polyurethane elastomer that resists puncture, tearing, ... 3M™ Polyurethane Protective Tape 8542NA is a matte black 0.022 inch thermoplastic polyurethane elastomer film that offers high ... Polyurethane Protective Tape Application Instructions (PDF, 407.8KB) * 3M™ Polyurethane Protective Tapes and Boots Removal ... 3M™ Polyurethane Protective Tape 8542NA is made from an abrasion resistant polyurethane elastomer that resists puncture, ...
... More Information:. View more information at www.grainger.com/product/HOWARD-LEIGHT-BY-HONEYWELL- ...
... the Polyurethanes Technical Conference is the premier destination to preview the polyurethanes technology of tomorrow and key ... the longest-running polyurethanes conference in North America, offers the unique convergence of industry expertise, ... The Center for the Polyurethanes Industrys annual Polyurethanes Technical Conference, ... the Polyurethanes Technical Conference is the premier destination to preview the polyurethanes technology of tomorrow and key ...
Get free shipping on qualified Polyurethane Surface Mount Tiles products or Buy Online Pick Up in Store today in the Building ... Can Polyurethane Surface Mount Tiles be returned?. Yes, Polyurethane Surface Mount Tiles can be returned and have a 90-Day ... What is the most common feature for Polyurethane Surface Mount Tiles?. The most common feature for Polyurethane Surface Mount ... What are the shipping options for Polyurethane Surface Mount Tiles?. Some Polyurethane Surface Mount Tiles can be shipped to ...
... s annual Polyurethanes Technical Conference, the longest-running polyurethanes conference in North America, offers the unique ... The Center for the Polyurethanes Industrys annual Polyurethanes Technical Conference, the longest-running polyurethanes ... CPI Announces Finalists for 2022 Polyurethane Innovation Award Aug 24, 2022. CPI Announces Finalists for 2022 Polyurethane ... 2023 Polyurethanes Technical Conference. September 25-27, 2023. San Antonio, TX. 2024 Polyurethanes Technical Conference. ...
Shop our selection of Polyurethanes, Lacquers & Shellacs in the section of Interior Stains & Finishes in the Décor Department ... BEHR Fast Drying Water-Based Polyurethane Floor Finish Satin, 3.78L BEHR Fast Drying Water-Based Polyurethane Floor Finish is a ... BEHR Fast Drying Water-Based Polyurethane Floor Finish is a durable crystal clear protective finish that resists stains and ...
Polyurethane, Blue, Women from our vast selection of styles. Fast delivery, and 24/7/365 real-person service with a smile. ...
... - Jun 15, 2012 - RWM Casters ... High quality PTMEG polyurethane and extensive product testing have lead RWM to introduce a new and improved solid poly wheel ... All RWM Solid Polyurethane Wheels come equipped with sealed precision ball bearings from the factory, eliminating sheel ... Our new 60D Premium Solid Polyurethane Wheels take performance to the next level. They offer quiet operation and are designed ...
This acrylic polyurethane provides a soft, smooth feel to the surface in a matte finish. Protects against smudges and ... About Soft Touch Polyurethane Varathane® Soft Touch Polyurethane is an acrylic polyurethane formulated to provide a soft, ...
A heavy-duty polyurethane flooring system designed for food and beverage processing plants, Sani-Crete resists impact, abrasion ... A heavy-duty polyurethane flooring system designed for food and beverage processing plants, Sani-Crete resists impact, abrasion ... Five different types of SaniCrete polyurethane flooring are available, ranging from 20 mil to 3/8 in. A full line of epoxy ...
Chroma Polyurethane Airbrush Colors represent the finest in co-polymer technology, boasting a special polyurethane binder that ... Formulated with input from leading wildlife artists and other fine artists, Chroma Polyurethane Airbrush Colors represent the ... finest in co-polymer technology, boasting a special polyurethane binder that provides a unique velvet matte finish. These ...
The book provides a comprehensive overview of the chemistry and the various possible application fields of polyurethanes. It ... Newcomers learn about the key concepts of polyurethane chemistry and the main application technologies, while experienced ... The chemistry of polyurethane coatings is of great significance in many applications worldwide. Moreover, their development ... starts by illustrating the principles of polyurethane chemistry, enabling the reader to understand the current significance of ...
Polyurethane Spray Foam is a type of high R-value insulation that has many positive attributes, and is probably the best ... Polyurethane Spray-Foam Insulation (idea). See all of Polyurethane Spray-Foam Insulation, no other writeups in this node. ... Polyurethane Spray Foam is a type of high R-value insulation that has many positive attributes, and is probably the best ...
Acrylic based polyurethane (PU) coatings with various amounts of nanosilica contents were prepared using solution casting ... When neat polyurethane coating was introduced to PP substrate, it shows that there was a slight decrease in the coefficient of ... Effect of Nanosilica Filled Polyurethane Composite Coating on Polypropylene Substrate. Yern Chee Ching. 1and Nurehan Syamimie1 ... S. Zhou, L. Wu, J. Sun, and W. Shen, "The change of the properties of acrylic-based polyurethane via addition of nano-silica," ...
Global colored polyurethane (PU) foams market size was estimated at 4,437.7 kilo tons in 2014. Automobile manufacturers are ... Colored Polyurethane (PU) Foams Market Size & Analysis, 2022 GVR Report cover Colored Polyurethane (PU) Foams Market Share, ... Colored Polyurethane Foams Market Share Insights. The global colored PU foams market is highly fragmented as small and medium- ... Global colored polyurethane (PU) foams market size was estimated at 4,437.7 kilo tons in 2014. Automobile manufacturers are ...
Polyurethane is so durable and water-resistant, it has largely replaced shellac and varnish as a wood finish. Originally, it ... Polyurethane is so durable and water-resistant, it has largely replaced shellac and varnish as a wood finish. Originally, it ... Polyurethane coatings brushed on vertical or contoured surfaces are more likely to drip and run. Brushes can also introduce ...
Polyurethane, steel. Mounting type. Plate. Product Height. 3-9/16 in.. Product Length. 2-15/16 in. in.. Product Weight. 0.75 lb ... With a longer service life than rubber casters, these polyurethane wheels are ideal for maintaining maneuverability for utility ...
Works with Uline Welded Steel Carts and Uline Welded Steel Flat Shelf Carts.ULINE offers over 38,500 boxes, plastic poly bags, mailing tubes, warehouse supplies and bubble wrap for your storage, packaging, or shipping supplies.
Gared Sports 12-inch I-Beam Polyurethane Standard Gym Padding. Click to buy Gared Sports sports equipment & other Basketball ... Gared Sports 12-inch I-Beam Polyurethane Standard Gym Padding Gared Sports 12-inch I-Beam Polyurethane Standard Gym Padding is ... Click the button below to add the Gared Sports 12-inch I-Beam Polyurethane Standard Gym Padding to your wish list. ...
... polyurethane o ring manufacturers, suppliers and exporters. These shown polyurethane o ring manufacturing companies are ... Industrial Polyurethane Wheel Ring By Yantai Zhengyuan Polyurethane Co., Ltd.. 1.2 - 18 USD ($) Get latest price. ... Polyurethane Liners By Joytech Polyurethane Works. 1000 - 1.0 lakh INR Get latest price. ... Polyurethane O Ring For Preventing Fluid Air From Escaping Application: Industrial. 15 INR Get latest price. ...
Rubber and polyurethane seals that are designed to improve wear resistance and lengthen service life. Seals resist oil, ... Rubber and polyurethane seals that are designed to improve wear resistance and lengthen service life. Seals resist oil, ...
... self-leveling elastomeric polyurethane, designed for expansion joints in concrete floors & decks, use it where flexibility as ... Masterseal sl, 10.1 oz, limestone, 1 component, non-priming, self-leveling elastomeric polyurethane, designed for expansion ...
... re using water-based polyurethane, which doesn't need thinning. Thinning the polyurethane makes it flow on more smoothly ... Three great finishes (that arent polyurethane). Consider one of these three other clear finishes for your next project. Youll ... Prepare the polyurethane by reducing it about 10 percent with mineral spirits, unless you' ... Spray on this coat using an aerosol polyurethane and let it cure overnight, photo below. ...
Request Immediate Quotes from Polyurethane Rollers Manufacturers & Suppliers. ... Polyurethane Rollers RFQ Please fill out the following form to submit a Request for Quote to any of the following companies ...
A new generation of polyurethane raw materials that produce a flexible, but highly crosslinked, polyurethane coating has been ... Polyurethane Coatings: A Clearcoat. An OEM polyurethane clearcoat is formed by the reaction of an isocyanate with an acrylic ... A new generation of polyurethane raw materials that produce a flexible, but highly crosslinked, polyurethane coating has been ... Polyurethane clearcoats can be used over many types of basecoats and can be formulated for high solids and low VOC.. The ...
Both the outsole and footbed are made from a proprietary polyurethane formula that provides exceptional shock absorption and ...
  • The significant reduction in the strength and stiffness of the polyurethane-aggregate mixture results from the formation of a soft polyurethane foam around each piece of aggregate. (cdc.gov)
  • Spray polyurethane foam-commonly referred to as SPF-is a case in point. (cdc.gov)
  • As popular as it has become, however, much remains unknown about spray polyurethane foam-specifically the health implications of its amines, glycols, and phosphate upon workers. (cdc.gov)
  • Polyurethane foam has a high R-factor (or R-value), so it resists the flow of heat and, when used as insulation, increases a building's energy efficiency. (cdc.gov)
  • Spray polyurethane foam is applied as a liquid but expands as it dries. (cdc.gov)
  • The hazards of MDI are well-documented and their exposure limits have been established However, the known hazards for spray polyurethane foam only take into account the first part of the mixture-the MDI. (cdc.gov)
  • In our labs we've done tracer gas studies, simulating potential exposures to spray polyurethane foam components, but to make the science useful for SPF installers, we need partners to help us collect on-site air samples. (cdc.gov)
  • Please contact NIOSH to advance the science behind spray polyurethane foam insulation. (cdc.gov)
  • See all of Polyurethane Spray-Foam Insulation , no other writeups in this node. (everything2.com)
  • Polyurethane Spray Foam is a type of high R-value insulation that has many positive attributes , and is probably the best possible insulation on the market at present. (everything2.com)
  • Polyurethane foam can provide all the requirements for bacteria, mold, yeast, and algae to grow and flourish. (ultra-fresh.com)
  • Antimicrobial additives help prevent the growth of bacteria, mold, and mildew in and on polyurethane foam. (ultra-fresh.com)
  • Inhibiting the proliferation of microbes in polyurethane foam, reduces microbial-associated odors, maintains esthetic appeal, and minimizes degradation. (ultra-fresh.com)
  • Historically, the polyurethane foam industry viewed 10,10'-oxybisphenox-arsine or "OBPA" as the golden standard in antimicrobial protection. (ultra-fresh.com)
  • As a result, a newer generation of more environmentally friendly and equally effective, antimicrobial additives for polyurethane foam have been developed. (ultra-fresh.com)
  • The most common additives used to manufacture antimicrobial polyurethane foam include various isothiazolinone treatments, zinc pyrithione, thiabendazole, silver, and quaternary ammonium compounds. (ultra-fresh.com)
  • How is Antimicrobial Polyurethane Foam Made? (ultra-fresh.com)
  • The antimicrobial additive becomes a permanent part of the structure once it is incorporated into the polyurethane foam. (ultra-fresh.com)
  • Manufacturers looking to assess the bacterial efficacy of their antimicrobial polyurethane foam should use the ISO 20743 (JIS L 1902). (ultra-fresh.com)
  • The polyurethane foam together with its surface lining shall satisfy low flame spread properties as per 2010 FTP Code, Part 5. (usingenglish.com)
  • Armchair and sofa Waiting armchair or two-seater sofa with beech ply frame, polyurethane foam padding, fully upholstered. (archiexpo.com)
  • Exposures to toluene diisocyanate (TDI) in polyurethane foam plants. (cdc.gov)
  • P96 is a one component aerosol polyurethane adhesive foam, fast moisture curing. (industrialtool.shop)
  • PRODUCT DESCRIPTION: DEMSUN MAX is a low expansion and maximum yield formulation aerosol polyurethane foam especially developed for fixing door & window frames. (industrialtool.shop)
  • Sink-Not 350 Categories Abrasion Resistant Acrylic/Topside Finish Anti Corrosive Chemical Resistant Fire Resistant Flooring Polyurethane Foam Sealer Wet Surface Tolerant SINK-NOT® 350 is a unique blend of polymeric MDI and blended polyol which combines in a 1/1 volume. (thinfilmtech.net)
  • A Small Investment For Coating Equipment And Products Will Get You Started In A New Polyurea, Polyurethane, And Spray Foam Business Or Increase The Revenue Of An Existing Company. (armorthane.com)
  • Part of LAST-A-FOAM-® R-9300 Continuous Insulation Block Series, Precast/Tilt-up Concrete Wall Panel- Blocks are made of high-density rigid cellular polyurethane material, which prevents thermal energy transfer between building and ground when installed under load-bearing precast, tilt-up, brick, and block walls. (thomasnet.com)
  • The new CNMC-E2 air driven proportioning unit is of an advanced and compact design.It is specially aimed at the applications of polyurethane foam in place. (hightopmachine.com)
  • An industrial hygiene study of polyurethane foam insulation application activities at Thermal Acoustic Foam Insulation, Inc., Columbia, Maryland. (cdc.gov)
  • Worker exposure to air contaminants and noise associated with the application of polyurethane (9009545) foam insulation was determined at Thermal Acoustic Foam Insulation, Inc., in Columbia, Maryland on November 19 and 20, 1979. (cdc.gov)
  • The objective of the research is to describe the healing process of infected surgical wounds with the use of polyurethane foam with ionic silver and silver sulfadiazine. (bvsalud.org)
  • Aniline is a chemical with a high production volume, and its main industrial use is as a starting material for one type of isocyanate, a chemical that is used to produce polyurethane foam. (who.int)
  • Moreover, the escalating requirements for polyurethane insulation are accelerating the global PU market. (marketresearchfuture.com)
  • Steel entry door manufacturers also use polyurethane as insulation in their doors. (garaga.com)
  • Polyurethane Blocks provide thermal insulation. (thomasnet.com)
  • Polyurethane Insulation Blocks offer alternative to wood. (thomasnet.com)
  • Polyurethane Adhesives When it comes to adhering insulation to roof decks, two-component polyurethane adhesives hold the largest market share in the commercial roofing market according to industry studies. (spri.org)
  • The chemistry of polyurethane coatings is of great significance in many applications worldwide. (european-coatings.com)
  • Acrylic based polyurethane (PU) coatings with various amounts of nanosilica contents were prepared using solution casting method. (hindawi.com)
  • Polyurethane coatings brushed on vertical or contoured surfaces are more likely to drip and run. (thisoldhouse.com)
  • Polyurethane coatings are the technology of choice for performance, beauty and low-temperature cure characteristics in automotive exterior applications. (pcimag.com)
  • Two-component polyurethane coatings are inherently self-healing due to their unique chemistry, and they offer a number of intrinsic advantages that address customer and market requirements. (pcimag.com)
  • The properties of polyurethane coatings are determined by the combination of the raw materials used in the formulation. (pcimag.com)
  • Learn About The Many Beneficial Applications Of Spray-On Polyurea And Polyurethane Protective Coatings In Your Industry. (armorthane.com)
  • To assess worker isocyanate exposures in a variety of processes involving the manufacture and use of surface coatings, polyurethane foams, adhesives, resins, elastomers, binders, and sealants, it is important to be able to measure airborne reactive isocyanate-containing compounds. (cdc.gov)
  • An OEM polyurethane clearcoat is formed by the reaction of an isocyanate with an acrylic polyol. (pcimag.com)
  • Spray-on bedliners have gained popularity in the two-component system, polyurethane (isocyanate and polyol) or polyurea (isocyanate and amine). (cdc.gov)
  • IMSEAR at SEARO: Work place challenge: spirometric response in polyurethane (isocyanate) paint workers. (who.int)
  • Whig J, Bansal B, Mahajan R. Work place challenge: spirometric response in polyurethane (isocyanate) paint workers. (who.int)
  • Furthermore, isocyanate species formed during polyurethane production or thermal degradation may also produce adverse health effects. (cdc.gov)
  • Global colored polyurethane (PU) foams market size was estimated at 4,437.7 kilo tons in 2014. (grandviewresearch.com)
  • Some polyurethane foams use "greener" ingredients that become a fantastic food source for microbes. (ultra-fresh.com)
  • Varathane® Soft Touch Polyurethane is an acrylic polyurethane formulated to provide a soft, smooth feel to the coating surface. (rustoleum.com)
  • Dimethylformamide is widely used in the chemical industry as a solvent, an intermediate, and an additive, with the largest quantities used in the production of acrylic fibres and polyurethanes. (who.int)
  • 3M™ Polyurethane Protective Tape 8542NA is a matte black 0.022 inch thermoplastic polyurethane elastomer film that offers high UV stability and has excellent environmental resistance properties. (3m.com)
  • It further helps to grow the market of PU-acrylate oligomers and TPU (Thermoplastic polyurethane), which are amalgamated as well as cured by radiation. (marketresearchfuture.com)
  • All thermoplastic polyurethane hose reinforced with an ABS helix. (usplastic.com)
  • Uniaxial compressive tests conducted on samples from the polyurethane-aggregate core revealed that both the compressive strength and the elastic modulus of the material were much less than that for polyurethane only with a density of 10.0-12.0 lb/ft 3 . (cdc.gov)
  • Well, researchers at the University of Colorado have been figuring out how to produce a novel polyurethane-based antimicrobial material to be placed on filters - it could kill the influenza virus and other pathogenic bacteria (think E. coli and S. aureus). (inda.org)
  • The original synthetic modular screen media material, polyurethane offers maximum flexibility in not only screen opening configurations, but also the integration of performance enhancing features like l type weirs, restricted flow bars, rider bars and deflectors. (schenckprocess.com)
  • I am interested in Polyurethane Rubber Drilling Floor Mat Anti Slip 1490mm Width could you send me more details such as type, size, quantity, material, etc. (oilmanchina.com)
  • Durable and stable polyurethane bushings transfer your hard earned torque where it belongs - the pavement. (massivespeedsystem.com)
  • Installation - Once removal of original bushings has taken place, installation of the new polyurethane bush typically takes from 1 - 5 minutes to install, the techs love it! (psbushings.com)
  • Polyurethane bushings are stronger and last longer than standard rubber bushings. (psbushings.com)
  • The soft polyurethane finish is less likely to scratch surfaces. (homedepot.com)
  • The fundamental raw materials needed to produce polyurethane are TDI, MDI, and other polyester polyols. (marketresearchfuture.com)
  • Both the outsole and footbed are made from a proprietary polyurethane formula that provides exceptional shock absorption and superior energy return. (allheart.com)
  • The center of the Polyurethanes Industry's annual Polyrethanes Technical Conference, the longest-running polyrethanes conference in North America, offers the unique convergence of industry expertise, professional networking, and regulatory insight. (clariant.com)
  • For more information, please view the 2022 Polyurethanes Technical Conference Exhibitor Prospectus . (americanchemistry.com)
  • Spray on this coat using an aerosol polyurethane and let it cure overnight, photo below . (woodmagazine.com)
  • 1Department of Occupational and Environmental Medicine, MIFACE, Michigan State (polyurethane) or amine (polyurea) component. (cdc.gov)
  • Masterseal sl, 10.1 oz, limestone, 1 component, non-priming, self-leveling elastomeric polyurethane, designed for expansion joints in concrete floors & decks, use it where flexibility as well as abrasion & puncture resistance are required. (truevalue.com)
  • Screenex injection moulded modular polyurethane screen panels are made from specially formulated Urethane to enhance plant and process requirements. (schenckprocess.com)
  • High density precision injection moulded Polyurethane screening module. (schenckprocess.com)
  • 3M™ Polyurethane Protective Tape 8542NA is made from an abrasion resistant polyurethane elastomer that resists puncture, tearing, abrasion, ultraviolet light and erosion. (3m.com)
  • Are there moisture resistant options within Polyurethane Surface Mount Tiles? (homedepot.com)
  • Within Polyurethane Surface Mount Tiles, we carry 13 moisture resistant options and 12 water resistant options. (homedepot.com)
  • Polyurethane is so durable and water-resistant, it has largely replaced shellac and varnish as a wood finish. (thisoldhouse.com)
  • This polyurethane coated nylon has a strong thread that goes up and across the fabric forming tear resistant squares. (seattlefabrics.com)
  • Formulated with input from leading wildlife artists and other fine artists, Chroma Polyurethane Airbrush Colors represent the finest in co-polymer technology, boasting a special polyurethane binder that provides a unique velvet matte finish. (dickblick.com)
  • We offer range of polyurethane coating available in several different finish colors and as per the customers specifications. (swagathurethane.co.in)
  • This 85 Durometer Shore (A) polyurethane wheel tread is designed specifically for improving ergonomics so there are not many applications where these wheels would not be a good fit. (thecasterguy.com)
  • This product is manufactured with the highest grade of polyurethane and the durometer of the bushing is designed to fit the application. (psbushings.com)
  • Doming resins are clear, two part polyurethane resins used to dome or encapsulate a wide variety of items. (elichem.eu)
  • Rubber and polyurethane seals that are designed to improve wear resistance and lengthen service life. (grote.com)
  • In accordance with the adopted parameters, it could be concluded that the polyurethane resin Quartz-die showed a lower compression resistance and a lower superficial hardness than did the Type IV plaster. (bvsalud.org)
  • Synergism between Rifampicin and Cationic Polyurethanes Overcomes Intrinsic Resistance of Escherichia coli . (bvsalud.org)
  • A heavy-duty polyurethane flooring system designed for food and beverage processing plants, Sani-Crete resists impact, abrasion, chemical attack and thermal shock. (foodengineeringmag.com)
  • Polyurethane Recoil Hose retains its self-coiling properties and stores itself when finished. (homedepot.com)
  • Made of polyurethane materials, these custom products are soft and squeezable too. (promo4kids.com)
  • Polyurethane_Products_Yantai Huamei Energy-saving Building Materials Co., Ltd. (huameiyt.com)
  • At half the thickness of normal latex condoms, our polyurethane condoms are so thin you might not even realize it's there. (okamotoglobal.com)
  • CLOSEST TO NOTHING Inspired by Japan's delicately-thin Sakura petals, we've managed to create our thinnest condom yet.At half the thickness of normal latex condoms, our polyurethane condoms are so. (okamotoglobal.com)
  • With a longer service life than rubber casters, these polyurethane wheels are ideal for maintaining maneuverability for utility or service carts. (harborfreight.com)
  • These casters are a great choice in applications where superior ergonomic performance is critical because of the high-grade elastic polyurethane on the tread of the wheels. (thecasterguy.com)
  • The worldwide polyurethane (PU) market size was valued at USD 65.5 Billion in the year 2018 at 7.0% CAGR (Compound Annual Growth Rate) throughout the forecast period. (marketresearchfuture.com)
  • The basic structure of a polyurethane coating features a soft segment, based on the polyol, which furnishes the coating with flexibility and elasticity (Figure 1). (pcimag.com)
  • High quality PTMEG polyurethane and extensive product testing have lead RWM to introduce a new and improved solid poly wheel that offers a drastic increase in performance over current industry poly type wheels and they are proudly Made in the USA! (thomasnet.com)
  • How is a polyurethane-injected section of a Garaga door made? (garaga.com)
  • Made of polyurethane, it allows heat to be transmitted faster and better. (okamotoglobal.com)
  • The rig matting is made of Polyurethane ( PU ) Rubber + Steel Nails. (oilmanchina.com)
  • Blocks are made of high-density rigid cellular polyurethane with closed-cell structure that is inert and prevents moisture absorption. (thomasnet.com)
  • These wheels reduce the force needed to push/pull your cart, the wheel tread deflects debris on the ground and the polyurethane is non-marking giving you fantastic floor protection. (thecasterguy.com)
  • White polyurethane high energy efficient pivot roof window. (yarddirect.com)
  • This paper gives the results of 4 case studies concerning the interaction between polyurethane (PUR) and coal mine roof in order to determine the mechanism of reinforcement, in both highly fractured rock and unfractured rock. (cdc.gov)
  • Newcomers learn about the key concepts of polyurethane chemistry and the main application technologies, while experienced specialists will value the insights on current trends and changes. (european-coatings.com)
  • The aim of the present study was to evaluate the mechanical behavior of a polyurethane resin Quartz-die (Zermack - Italy) used for dental modeling. (bvsalud.org)
  • This has resulted into high opportunities for plastics such as polyurethane (PU), polyamide (PA) and polypropylene (PP). (grandviewresearch.com)
  • Can Polyurethane Surface Mount Tiles be returned? (homedepot.com)
  • Yes, Polyurethane Surface Mount Tiles can be returned and have a 90-Day return period. (homedepot.com)
  • What is the most common feature for Polyurethane Surface Mount Tiles? (homedepot.com)
  • What are the shipping options for Polyurethane Surface Mount Tiles? (homedepot.com)
  • Some Polyurethane Surface Mount Tiles can be shipped to you at home, while others can be picked up in store. (homedepot.com)
  • What is the top-selling product within Polyurethane Surface Mount Tiles? (homedepot.com)
  • If you would like to exhibit at the Polyurethanes Technical Conference please contact Mary Novack ? (americanchemistry.com)
  • This composite seal consisted of a polyurethane and limestone aggregate core that was formed between two concrete block walls. (cdc.gov)
  • The book provides a comprehensive overview of the chemistry and the various possible application fields of polyurethanes. (european-coatings.com)
  • It starts by illustrating the principles of polyurethane chemistry, enabling the reader to understand the current significance of many applications and special developments. (european-coatings.com)
  • A unique aspect of polyurethane chemistry is that the hydrogen bonding acts as an additional crosslink, but also allows for the thermoplastic flow to relieve stress and enable self-healing of defects. (pcimag.com)
  • diameters, 60D Premium Solid Polyurethane Wheels incorporate metal bearing retaining sleeve, which prevents premature bearing failure from high-speed, high-load applications. (thomasnet.com)
  • Polyurethane clearcoats can be used over many types of basecoats and can be formulated for high solids and low VOC. (pcimag.com)
  • Solid Polyurethane Wheels target towline applications. (thomasnet.com)
  • Solid Urethane Wheels are used in applications that need lower noise levels, improved floor protection and where heavy loads and continuous use cause standard polyurethane wheels to heat up and degrade. (thomasnet.com)
  • Besides, the applications of innovative production methodologies for polyurethane with top-notch traits are escalating the global polyurethane market. (marketresearchfuture.com)
  • Polyurethane also comes with many other applications in medical & pharmaceutical, textiles & apparel, food & beverage processing, and medical & pharmaceutical. (marketresearchfuture.com)
  • Polyurethane panels perform very well in wet and dry applications. (schenckprocess.com)
  • BEHR Fast Drying Water-Based Polyurethane Floor Finish is a durable crystal clear protective finish that resists stains and scratches for use on residential floors. (homedepot.ca)
  • Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. (woodmagazine.com)