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.
Inorganic compounds that contain silver as an integral part of the molecule.
Polyester polymers formed from terephthalic acid or its esters and ethylene glycol. They can be formed into tapes, films or pulled into fibers that are pressed into meshes or woven into fabrics.
Fatty acid biopolymers that are biosynthesized by microbial polyhydroxyalkanoate synthase enzymes. They are being investigated for use as biodegradable polyesters.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
Derivatives and polymers of styrene. They are used in the manufacturing of synthetic rubber, plastics, and resins. Some of the polymers form the skeletal structures for ion exchange resin beads.
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.
Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A group of thermoplastic or thermosetting polymers containing polyisocyanate. They are used as ELASTOMERS, as coatings, as fibers and as foams.
A plastic substance deposited by insects or obtained from plants. Waxes are esters of various fatty acids with higher, usually monohydric alcohols. The wax of pharmacy is principally yellow wax (beeswax), the material of which honeycomb is made. It consists chiefly of cerotic acid and myricin and is used in making ointments, cerates, etc. (Dorland, 27th ed)
Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
Any woven or knit material of open texture used in surgery for the repair, reconstruction, or substitution of tissue. The mesh is usually a synthetic fabric made of various polymers. It is occasionally made of metal.
Materials used in closing a surgical or traumatic wound. (From Dorland, 28th ed)
A gram-negative, facultatively chemoautotrophic bacterium, formerly called Wautersia eutropha, found in water and soil.
Enzymes from the transferase class that catalyze the transfer of acyl groups from donor to acceptor, forming either esters or amides. (From Enzyme Nomenclature 1992) EC 2.3.
Compounds used in food or in food preparation to replace dietary fats. They may be carbohydrate-, protein-, or fat-based. Fat substitutes are usually lower in calories but provide the same texture as fats.
Infection with larvae of the blow fly Cochliomyia hominivorax (Callitroga americanum), a common cause of disease in livestock in the southern and southwestern U.S.A.
Pollution prevention through the design of effective chemical products that have low or no toxicity and use of chemical processes that reduce or eliminate the use and generation of hazardous substances.
Salts and esters of hydroxybutyric acid.
Propylene or propene polymers. Thermoplastics that can be extruded into fibers, films or solid forms. They are used as a copolymer in plastics, especially polyethylene. The fibers are used for fabrics, filters and surgical sutures.
Analogs or derivatives of mandelic acid (alpha-hydroxybenzeneacetic acid).
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.
The technique of placing cells or tissue in a supporting medium so that thin sections can be cut using a microtome. The medium can be paraffin wax (PARAFFIN EMBEDDING) or plastics (PLASTIC EMBEDDING) such as epoxy resins.
Implants constructed of materials designed to be absorbed by the body without producing an immune response. They are usually composed of plastics and are frequently used in orthopedics and orthodontics.
The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)
Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
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.
A nonreducing disaccharide composed of GLUCOSE and FRUCTOSE linked via their anomeric carbons. It is obtained commercially from SUGARCANE, sugar beet (BETA VULGARIS), and other plants and used extensively as a food and a sweetener.
Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components.
Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
A TEXTILE fiber obtained from the pappus (outside the SEEDS) of cotton plant (GOSSYPIUM). Inhalation of cotton fiber dust over a prolonged period can result in BYSSINOSIS.
Polymers where the main polymer chain comprises recurring amide groups. These compounds are generally formed from combinations of diamines, diacids, and amino acids and yield fibers, sheeting, or extruded forms used in textiles, gels, filters, sutures, contact lenses, and other biomaterials.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Methods and techniques used to genetically modify cells' biosynthetic product output and develop conditions for growing the cells as BIOREACTORS.
A biocompatible polymer used as a surgical suture material.
Chemical compounds derived from acids by the elimination of a molecule of water.
Salts and esters of the 10-carbon monocarboxylic acid-decanoic acid.
Polymers synthesized by living organisms. They play a role in the formation of macromolecular structures and are synthesized via the covalent linkage of biological molecules, especially AMINO ACIDS; NUCLEOTIDES; and CARBOHYDRATES.
A plant genus of the family CELASTRACEAE.
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)
The plan and delineation of prostheses in general or a specific prosthesis.
Techniques for securing together the edges of a wound, with loops of thread or similar materials (SUTURES).
Leisure activities engaged in for pleasure.
Derivatives of caproic acid. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a carboxy terminated six carbon aliphatic structure.
A colorless, toxic liquid with a strong aromatic odor. It is used to make rubbers, polymers and copolymers, and polystyrene plastics.
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.
Enzymes which catalyze the hydrolysis of carboxylic acid esters with the formation of an alcohol and a carboxylic acid anion.
The outer margins of the ABDOMEN, extending from the osteocartilaginous thoracic cage to the PELVIS. Though its major part is muscular, the abdominal wall consists of at least seven layers: the SKIN, subcutaneous fat, deep FASCIA; ABDOMINAL MUSCLES, transversalis fascia, extraperitoneal fat, and the parietal PERITONEUM.
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.
Pathological processes consisting of the union of the opposing surfaces of a wound.
A method where a culturing surface inoculated with microbe is exposed to small disks containing known amounts of a chemical agent resulting in a zone of inhibition (usually in millimeters) of growth of the microbe corresponding to the susceptibility of the strain to the agent.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
The active insecticidal constituent of CHRYSANTHEMUM CINERARIIFOLIUM flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester.
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.
Organic compounds containing both the hydroxyl and carboxyl radicals.
Lightweight meshwork fabric made of cotton, silk, polyester, nylon (polyamides), or other material impregnated with insecticide, having openings too small to allow entry of mosquitoes or other insects, thereby offering protection against insect bite and insect-borne diseases.
Surgical procedures undertaken to repair abnormal openings through which tissue or parts of organs can protrude or are already protruding.
Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)

A clearance model of inhaled man-made fibers in rat lungs. (1/1075)

A clearance model of inhaled man-made fibers (MMFs) was developed, and the calculated fiber numbers and dimensions were compared with the experimental ones using a glass fiber (GF), ceramic fiber (RF1) and two potassium octatitanate whiskers (PT1, TW). If the translocation rate by macrophages is constant and the effect of dissolution and disintegration can be ignored, the fiber number is expected to decrease exponentially with time. In the experimental study, however, the fiber number did not always decrease exponentially. In the case of RF1, the fiber number decreased almost exponentially and the diameter decreased linearly with the time. The clearance rate constant of GF during 3 to 6 months after the end of one-month exposure was greater than that during 1 to 3 months. On the contrary, the clearance rate constants of PT1 and TW during 1 to 6 months were greater than next six months. The diameter and the length of GF did not change significantly. The fiber length of PT1 tends to become longer with time although the diameter did not change significantly. Our theoretical model gives a satisfactory fit to these experimental results.  (+info)

Metabolic engineering of poly(3-hydroxyalkanoates): from DNA to plastic. (2/1075)

Poly(3-hydroxyalkanoates) (PHAs) are a class of microbially produced polyesters that have potential applications as conventional plastics, specifically thermoplastic elastomers. A wealth of biological diversity in PHA formation exists, with at least 100 different PHA constituents and at least five different dedicated PHA biosynthetic pathways. This diversity, in combination with classical microbial physiology and modern molecular biology, has now opened up this area for genetic and metabolic engineering to develop optimal PHA-producing organisms. Commercial processes for PHA production were initially developed by W. R. Grace in the 1960s and later developed by Imperial Chemical Industries, Ltd., in the United Kingdom in the 1970s and 1980s. Since the early 1990s, Metabolix Inc. and Monsanto have been the driving forces behind the commercial exploitation of PHA polymers in the United States. The gram-negative bacterium Ralstonia eutropha, formerly known as Alcaligenes eutrophus, has generally been used as the production organism of choice, and intracellular accumulation of PHA of over 90% of the cell dry weight have been reported. The advent of molecular biological techniques and a developing environmental awareness initiated a renewed scientific interest in PHAs, and the biosynthetic machinery for PHA metabolism has been studied in great detail over the last two decades. Because the structure and monomeric composition of PHAs determine the applications for each type of polymer, a variety of polymers have been synthesized by cofeeding of various substrates or by metabolic engineering of the production organism. Classical microbiology and modern molecular bacterial physiology have been brought together to decipher the intricacies of PHA metabolism both for production purposes and for the unraveling of the natural role of PHAs. This review provides an overview of the different PHA biosynthetic systems and their genetic background, followed by a detailed summation of how this natural diversity is being used to develop commercially attractive, recombinant processes for the large-scale production of PHAs.  (+info)

Reduction of cell lysate viscosity during processing of poly(3-hydroxyalkanoates) by chromosomal integration of the staphylococcal nuclease gene in Pseudomonas putida. (3/1075)

Poly(3-hydroxyalkanoates) (PHAs) are biodegradable thermoplastics which are accumulated by many bacterial species in the form of intracellular granules and which are thought to serve as reserves of carbon and energy. Pseudomonas putida accumulates a polyester, composed of medium-side-chain 3-hydroxyalkanoic acids, which has excellent film-forming properties. Industrial processing of PHA involves purification of the PHA granules from high-cell-density cultures. After the fermentation process, cells are lysed by homogenization and PHA granules are purified by chemical treatment and repeated washings to yield a PHA latex. Unfortunately, the liberation of chromosomal DNA during lysis causes a dramatic increase in viscosity, which is problematic in the subsequent purification steps. Reduction of the viscosity is generally achieved by the supplementation of commercially available nuclease preparations or by heat treatment; however, both procedures add substantial costs to the process. As a solution to this problem, a nuclease-encoding gene from Staphylococcus aureus was integrated into the genomes of several PHA producers. Staphylococcal nuclease is readily expressed in PHA-producing Pseudomonas strains and is directed to the periplasm, and occasionally to the culture medium, without affecting PHA production or strain stability. During downstream processing, the viscosity of the lysate from a nuclease-integrated Pseudomonas strain was reduced to a level similar to that observed for the wild-type strain after treatment with commercial nuclease. The nuclease gene was also functionally integrated into the chromosomes of other PHA producers, including Ralstonia eutropha.  (+info)

Production of poly(3-hydroxybutyric acid-co-4-hydroxybutyric acid) and poly(4-hydroxybutyric acid) without subsequent degradation by Hydrogenophaga pseudoflava. (4/1075)

A Hydrogenophaga pseudoflava strain was able to synthesize poly(3-hydroxybutyric acid-co-4-hydroxybutyric acid) [P(3HB-co-4HB)] having a high level of 4-hydroxybutyric acid monomer unit (4HB) from gamma-butyrolactone. In a two-step process in which the first step involved production of cells containing a minimum amount of poly(3-hydroxybutyric acid) [P(3HB)] and the second step involved polyester accumulation from the lactone, approximately 5 to 10 mol% of the 3-hydroxybutyric acid (3HB) derived from the first-step culture was unavoidably reincorporated into the polymer in the second cultivation step. Reincorporation of the 3HB units produced from degradation of the first-step residual P(3HB) was confirmed by high-resolution 13C nuclear magnetic resonance spectroscopy. In order to synthesize 3HB-free poly(4-hydroxybutyric acid) [P(4HB)] homopolymer, a three-stage cultivation technique was developed by adding a nitrogen addition step, which completely removed the residual P(3HB). The resulting polymer was free of 3HB. However, when the strain was grown on gamma-butyrolactone as the sole carbon source in a synthesis medium, a copolyester of P(3HB-co-4HB) containing 45 mol% 3HB was produced. One-step cultivation on gamma-butyrolactone required a rather long induction time (3 to 4 days). On the basis of the results of an enzymatic study performed with crude extracts, we suggest that the inability of cells to produce 3HB in the multistep culture was due to a low level of 4-hydroxybutyric acid (4HBA) dehydrogenase activity, which resulted in a low level of acetyl coenzyme A. Thus, 3HB formation from gamma-butyrolactone is driven by a high level of 4HBA dehydrogenase activity induced by long exposure to gamma-butyrolactone, as is the case for a one-step culture. In addition, intracellular degradation kinetics studies showed that P(3HB) in cells was completely degraded within 30 h of cultivation after being transferred to a carbon-free mineral medium containing additional ammonium sulfate, while P(3HB-co-4HB) containing 5 mol% 3HB and 95 mol% 4HB was totally inert in interactions with the intracellular depolymerases. Intracellular inertness could be a useful factor for efficient synthesis of the P(4HB) homopolymer and of 4HB-rich P(3HB-co-4HB) by the strain used in this study.  (+info)

Analyses of a polyhydroxyalkanoic acid granule-associated 16-kilodalton protein and its putative regulator in the pha locus of Paracoccus denitrificans. (5/1075)

The polyhydroxyalkanoic acid (PHA) granule-associated 16-kDa protein (GA16 protein) of Paracoccus denitrificans was identified, and its corresponding gene was cloned and analyzed at the molecular level. The N-terminal amino acid sequence of GA16 protein revealed that its structural gene is located downstream from the PHA synthase gene (phaCPd) cloned recently (S. Ueda, T. Yabutani, A. Maehara, and T. Yamane, J. Bacteriol. 178:774-779, 1996). Gene walking around phaCPd revealed two new open reading frames (ORFs) possibly related to PHA synthesis, one of which was the phaPPd gene, encoding GA16 protein, and the other was the phaRPd gene, encoding a protein that is putatively involved in the regulation of the expression of phaPPd. Overproduction of PhaPPd was observed in Escherichia coli carrying phaPPd, but the overproduction was not observed in the presence of phaRPd. Coexpression of phaPPd and PHA biosynthesis genes in E. coli caused increases in both the number of poly-(3-hydroxybutyric acid) (PHB) granules and PHB content and caused decreases in both the size of the granules and the molecular weight of PHB. GA16 protein was considered a phasin protein. The phaRPd gene had significant similarities to stdC, a possible transcriptional factor of Comamonas testosteroni, as well as to other ORFs of unknown function previously found in other PHA-synthetic bacteria.  (+info)

Paracrine immunotherapy with interleukin-2 and local chemotherapy is synergistic in the treatment of experimental brain tumors. (6/1075)

Potent immune responses against malignant brain tumors can be elicited by paracrine intracranial (i.c.) immunotherapy with interleukin (IL)-2. Additionally, i.c. delivery of carmustine via biodegradable polymers has been shown to significantly prolong survival in both animal models and clinical trials. In this study, we show that the combination of paracrine immunotherapy, with nonreplicating genetically engineered tumor cells that produce IL-2, and local delivery of chemotherapy by biodegradable polymers prolongs survival in a synergistic manner in mice challenged intracranially with a lethal murine brain tumor. Animals receiving IL-2-transduced cells and polymers containing 10% 1,3-bis(2-chloroethyl)-1-nitrosourea had significantly improved survival compared with animals receiving IL-2-transduced cells or 10% 1,3-bis(2-chloroethyl)-1-nitrosourea alone. Median survival for the control group was 19 days. Survival in animals receiving IL-2-transduced cells and 1% carboplatin-containing polymers was also significantly improved compared with either therapy alone. Histopathological examination on day 14 of animals receiving combination treatment showed rare degenerating tumor cells. In addition to tissue necrosis surrounding the polymer, a marked inflammatory reaction was observed. In long-term survivors (all animals receiving combination treatment), no tumor was observed and the inflammatory reaction was completely resolved. The brains of animals receiving combination therapy showed both tissue necrosis due to local chemotherapy and strong inflammation due to paracrine immunotherapy. The demonstration of synergy between paracrine IL-2 and local i.c. delivery of antineoplastic drugs is novel and may provide a combined treatment strategy for use against both primary and metastatic i.c. tumors.  (+info)

Health hazards in the production and processing of some fibers, resins, and plastics in Bulgaria. (7/1075)

Results of the toxicological studies of working conditions, general and professional morbidity, and complex examinations carried out on workers engaged in the production of polyamides, polyacrylonitrile fibers, polyester fibers and poly (vinyl chloride) resin, urea-formaldehyde glue, glass fibre materials and polyurethane resins are given. An extremely high occupational hazard for workers in the production of poly (vinyl chloride) resin and porous materials from polyurethane resins and urea-formaldehyde glue has been established. Cases of vinyl chloride disease, poisoning from formaldehyde, isocyanates, and styrene were noted. Prophylactic measures were taken in Bulgaria to lessen the occupational hazard in the productions as set forth included limitation of the work day to 6 hr, free food, additional bonus and leave, and annual physical examinations of workers.  (+info)

Removal of endotoxin during purification of poly(3-hydroxybutyrate) from gram-negative bacteria. (8/1075)

Poly(3-hydroxybutyrate) (PHB) was produced by cultivating several gram-negative bacteria, including Ralstonia eutropha, Alcaligenes latus, and recombinant Escherichia coli. PHB was recovered from these bacteria by two different methods, and the endotoxin levels were determined. When PHB was recovered by the chloroform extraction method, the endotoxin level was less than 10 endotoxin units (EU) per g of PHB irrespective of the bacterial strains employed and the PHB content in the cell. The NaOH digestion method, which was particularly effective for the recovery of PHB from recombinant E. coli, was also examined for endotoxin removal. The endotoxin level present in PHB recovered by 0.2 N NaOH digestion for 1 h at 30 degrees C was higher than 10(4) EU/g of PHB. Increasing the digestion time or NaOH concentration reduced the endotoxin level to less than 1 EU/g of PHB. It was concluded that PHB with a low endotoxin level, which can be used for various biomedical applications, could be produced by chloroform extraction. Furthermore, PHB with a much lower endotoxin level could be produced from recombinant E. coli by simple NaOH digestion.  (+info)

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The present invention provides a nonwoven web prepared from an aliphatic polyester polymer which has sufficient tear strength and is biodegradable. Biodegradable nonwoven webs of the present are prepared from a polymer blend having from about 65% by weight to about 99% by weight of a biodegradable aliphatic polyester polymer and from about 1% by weight to about 35% by weight of a second polymer selected from the group consisting of a polymer having a lower melting point than the biodegradable aliphatic polyester polymer, a polymer having a lower molecular weight than the biodegradable aliphatic polyester polymer and mixtures thereof. Surprisingly, the nonwoven webs of the present invention have a tear strength greater than the tear strength of a nonwoven web prepared from the biodegradable aliphatic polyester polymer alone. In addition, other properties of the resulting nonwoven web, such as the tensile strength and energy to break, are not adversely affected, by the addition of the second polymer, in
An aliphatic polyester polymer compositions and preparation method thereof. The invention provides a bioresorbable aliphatic polyester copolymer, comprising the reaction product of a first polyester, a second polyester, and a coupling agent. Specifically, the first polyester and second polyester have the same repeat units, but different weight average molecular weights. Methods for preparing the aliphatic polyester copolymer are provided, in which the first polyester reacts with the second polyester in the presence of the coupling agent, undergoing copolymerization.
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Outlast Technologies, a leader in heat management and moisture reduction technology, announces the introduction of Outlast® polyester fiber. After extensive research and development, Outlast has created the first-ever heat management polyester fibers, extending the range of applications and markets in which the technology can be used.The bi-component fiber has a phase change material (PCM) core and polyester sheath. Staple fibers of the polyester will launch in the market first, followed by filament fibers.. Outlast polyester features the added value of heat management with the same characteristics of other polyester fibers: low moisture absorption, ability to transport moisture, improved wrinkle resistance, water and wind resistance, and high tearing and abrasion resistance. The Outlast polyester is designed for functional apparel and other applications worn next to skin, including t-shirts, socks, base layers, athletic wear and underwear.. ...
There is an increasing demand for new materials in biomedical applications with material properties that are highly specific for each application area. The search for new materials requires the creation of materials with suitable mechanical properties, functionalities, three-dimensional structures and a controlled degradation profile. The focus of the work described in this thesis has been on the synthesis of functional degradable aliphatic polyesters, on the design of porous scaffolds and on their synthesis with bio-safe catalyst/initiator systems. An unsaturated aliphatic polyester has been synthesized by condensation polymerization to produce poly(but-2-ene-1,4-diyl malonate) (PBM), which was applicable as a cross-linked network and as a macro-co-initiator for the ring-opening polymerization (ROP) of cyclic ester monomers. The method of preparation of PBM was simple and straightforward and there was no need to purify the monomers or add a catalyst. PBM was successfully cross-linked with ...
A laminated polyester film comprising a polyester base film and a layer comprising a polyester graft copolymer and which is formed at least on one surface of said polyester base film, said polyester graft copolymer comprising a hydrophobic copolymerizable polyester resin and an acid anhydride having at least one double bond grafted to said polyester resin. The laminated polyester film of the present invention exhibits good adhesive property, water resistance and resistance to blocking, particularly excellent adhesive property, by applying a specific polyester graft copolymer to a polyester base film.
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Todays polyester fabrics often can imitate natural fabrics well. Dyeability and printing is a very big advantage, which allows for an interesting and original finish, which in the case of clothing will stand out from the crowd, and in the case of, for example, bedding will magnificently beautify the appearance of the bedroom. Polyester is a material that has a really wide range of applications. Polyester fabric is one of the most important possibilities of using polyesters. Thanks to the use of the most modern technologies, polyester fabrics are distinguished by a great pleasure of touch and high quality.. Polyester fibers alone or in a mixture with wool, cotton or viscose fibers are used for the manufacture of fabrics for outerwear, decorative fabrics, curtains. Textured polyester fibers are used for knitwear. These fibers are also used for the production of wires replacing sections of blood vessels and for the production of technical products, e.g. ropes, cords.. The Sako Expo company offers ...
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Hyperbranched, aliphatic polyesters of theoretically calculated molar masses 1200-44 300 were synthesized in the molten state from 2,2-bis(hydroxymethyl)propionic acid (repeating unit of AB(x) type) and 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (core molecule) using acid catalysis. The synthesis procedure was a pseudo-one-step reaction where stoichiometric amounts corresponding to each generation were added successively. The resulting polymers were glassy, slightly yellow solids at room temperature with hydroxyl groups as terminal groups. The degree of branching of the polyesters was determined with the help of model compounds using C-13-NMR and was found to be near 80%. The material exhibited good thermal stability as analyzed with TGA in a nitrogen atmosphere. Glass transition temperatures were determined using DSC and were found to be about 40 degrees C and to be relatively insensitive to variations in molar mass.. ...
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Abstract Peripheral nerves possess the capacity of self-regeneration after traumatic injury. Transected peripheral nerves can be bridged by direct surgical coaptation of the two nerve stumps or by interposing autografts or biological (veins) or synthetic nerve conduits (NC). NC are tubular structures that guide the regenerating axons to the distal nerve stump. Early synthetic NC have primarily been made of silicone because of the relative flexibility and biocompatibility of this material and because medical-grade silicone tubes were readily available in various dimensions. Nowadays, NC are preferably made of biodegradable materials such as collagen, aliphatic polyesters, or polyurethanes. Although NC assist in guiding regenerating nerves, satisfactory functional restoration of severed nerves may further require exogenous growth factors. Therefore, authors have proposed NC with integrated delivery systems for growth factors or growth factor,producing cells. This article reviews the most important ...
POLYESTER RESIN Polyester is a laminating resin cured by adding MEKP Orthophtalic Polyester is an all purpose resin, Isophtalic Polyester is more water resistant and the resin used for boatbuilding Polyester is made up in a 2 step process with raw materials from coal and petroleum bases to finally form a thermosetting plastic Polyester is mixed with up to 50% styrene, a monomer to improve the resins viscosity
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0002] Non-aqueous dispersions are known, as are microparticles produced by non-aqueous dispersion techniques. Typically, non-aqueous dispersions are prepared by the free radical addition polymerization of ethylenically unsaturated monomers in a hydrocarbon rich dispersing medium. The polymerization is carried out in the presence of a steric stabilizer, a portion of which is soluble in the dispersing medium and a portion of which is associated with the dispersed polymer; the dispersed polymer is insoluble in the dispersing medium. The steric stabilizer can be physically or chemically bound to the dispersed polymer. The portion of the steric stabilizer that is soluble in the dispersing medium is typically an aliphatic polyester or an acrylic polymer that is prepared from aliphatic monomers. There are several drawbacks with non-aqueous dispersions produced using these types of stabilizers due to the large difference in polarity, compatibility and solubility characteristics between the stabilizer ...
0127]Generally, if the degree of brilliance is high, normal reflectivity becomes large and the surface appears glossy; conversely, if the degree of brilliance is low, normal reflectivity also becomes low, and the surface appears to be rough. Also in reflective films, those with high normal reflectivity tend to have high front brightness and satisfactory light reflection capabilities. If the degree of brilliance on the side of the surface for reflection use of the present reflective film at 60° is in the range of 50 to 95, satisfactory light reflection capabilities, and in particular satisfactory brightness, are obtained. Such effects appear particularly notably in the case of a constitution in which, sequentially from the liquid crystal side in the internal constitution of a liquid crystal television, a brightness improvement sheet, a diffusion sheet, a diffusion plate, a cold cathode tube and a reflective film are layered. Conversely, if the degree of brilliance is below 50, diffuse ...
Article Anaerobic digestion of aliphatic polyesters. Anaerobic processes for the treatment of plastic materials waste represent versatile and effective approach in environmental protection and solid waste management. In this work, anaerobic biodegrad...
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TY - JOUR. T1 - Drug Delivery Nanocarriers from a Fully Degradable PEG-Conjugated Polyester with a Reduction-Responsive Backbone. AU - Yameen, Basit. AU - Vilos, Cristian. AU - Choi, Won Il. AU - Whyte, Andrew. AU - Huang, Jining. AU - Pollit, Lori. AU - Farokhzad, Omid C.. PY - 2015/8/1. Y1 - 2015/8/1. N2 - The remarkably high intracellular concentration of reducing agents is an excellent endogenous stimulus for designing nanocarriers programmed for intracellular delivery of therapeutic agents. However, despite their excellent biodegradability profiles, aliphatic polyesters that are fully degradable in response to the intracellular reducing environment are rare. Herein, a reduction-responsive drug delivery nanocarrier derived from a linear polyester bearing disulfide bonds is reported. The reduction-responsive polyester is synthesized via a convenient polycondensation process. After conjugation of terminal carboxylic acid groups of polyester to polyethylene glycol (PEG), the resulting polymer ...
TY - JOUR. T1 - The Influence of Solvent Processing on Polyester Bioabsorable Polymers. AU - Dixon, D. AU - Manson, J. PY - 2012/1/1. Y1 - 2012/1/1. N2 - Solvent-based methods are commonly employed for the production of polyester-based samples and coatings in both medical device production and research. The influence of solvent casting and subsequent drying time was studied using thermal analysis, spectroscopy and weight measurement for four grades of 50 : 50 poly(lactic-co-glycolic acid) (PLGA) produced by using chloroform, dichloromethane, and acetone. The results demonstrate that solvent choice and PLGA molecular weight are critical factors in terms of solvent removal rate and maintaining sample integrity, respectively. The protocols widely employed result in high levels of residual solvent and a new protocol is presented together with solutions to commonly encountered problems.. AB - Solvent-based methods are commonly employed for the production of polyester-based samples and coatings in ...
For those worried about the environment, this fact may cause you to switch to all-natural fabrics and leave the petroleum polyester alone. Heavyweight shirts like the Hanes Beefy T tend to feel rough to me; lighter ones are often softer. Contact the shop to find out about available delivery options. The 4 way stretch in some brushed polyester fabrics adds to your comfort levels. Polyester apparel is more wrinkle resistant than cotton, fades less, and is long lasting and durable. The latter fabric was created to mimic and replace silk which itself has a very smooth texture and feel to it. To a lot of people, especially back in the 70s when this material really became popular, it did and does have a cheap feel to it. What does polyester feel like? Im 64 and slim, these fit me very in body length & through the chest, Im a 43in that area. Send me exclusive offers, unique gift ideas, and personalised tips for shopping and selling on Etsy. 3.Tow: Polyester tow is like polyester filament, but in ...
Previous studies (24, 31) that investigated the effect of PhaP on PHB accumulation in recombinant E. coli carrying pha from C. necator have shown an increase in polymer accumulation and a higher number of smaller PHA granules in strains carrying phaP. York et al. (31) reported a 100% increase in polymer production in 105-h flask cultures in LB containing 2% glucose. We analyzed the effect of phaP of Azotobacter sp. strain FA8 on PHB accumulation and bacterial growth in recombinant E. coli carrying the pha-synthesizing genes from this strain. As expected, the cells carrying PhaP accumulated more polymer. When the effect of PhaP on cell growth was first analyzed in flask cultures grown in minimal medium with lactose, no differences were observed, but when cells were grown in conditions in which higher cell densities were achieved, those carrying phaP grew more and accumulated more PHB. When cultures were grown in a bioreactor using glycerol, the differences observed were greater. The increase in ...
There is an increasing need for synthetic bone substitute materials that decrease the need for allografts and autografts. In this study, composites of β-TCP and a biodegradable poly(L-lactide-co-ε-caprolactone) were manufactured using extrusion to form biodegradable composites with high β-TCP contents for osteoconductivity. The hydrolytic degradation of the composites containing 0, 10, 20, 35 and 50% of β-TCP was studied in vitro for 52 weeks. During the study, it was observed that β-TCP did not have an effect on the degradation rate of the polymer matrix. However, the crystallinity of the materials increased throughout the test series and changes in Tgs were also observed as the comonomer ratio of the polymer matrix changed as the degradation proceeded. The results show that the materials have desirable degradation properties and, thus, possess great potential as bioabsorbable and osteoconductive bone filling materials ...
Polyester fibres. Coloured scanning electron micrograph (SEM) of fibres of polyester material. Polyester is a synthetic material, and is made by a polymerisation reaction between two chemicals. Magnification: x75 at 6x6cm size. - Stock Image H120/0343
TROPICAL ROOFING PRODUCTS™ # 931 - TIETEX® T326 POLYESTER is a stitch-bonded, high-performance fabric for use in cold applied restoration roofing and roof maintenance systems. #931 - TIETEX® T326 POLYESTER comes with lay lines for one and two ply roof systems. It is ideal as the reinforcing component in cold process roofing and repair when used with water-based asphalt emulsion, acrylic coating, solvent type coatings, or mastics. Tear strength, puncture resistance, and tensile strength combined with elongation TIETEX® T326 POLYESTER has been shown in tests with asphalt emulsion and cutbacks to be far superior to conventional roofing felts weighing five to seven times as much. #931-TIETEX® T326 POLYESTER is a polyester that will readily conform to irregular surfaces and standing seam metal roof decks. It is also much easier to handle and apply properly than other soft polyester sheets. ARCAT provides architectural information on building materials, manufacturers, specifications, BIM families
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We have the most comprehensive database of resources to provide the largest market segments to provide the largest collection of business information products.. The content of the study subjects, includes a total of 15 chapters:. Chapter 1 Introduction and Overview. Chapter 2 Industry Cost Structure and Economic Impact. Chapter 3 Rising Trends and New Technologies with Major key players. Chapter 4 Global Polyester Forming Fabric Market Analysis, Trends, Growth Factor. Chapter 5 Polyester Forming Fabric Market Application and Business with Potential Analysis. Chapter 6 Global Polyester Forming Fabric Market Segment, Type, Application. Chapter 7 Global Polyester Forming Fabric Market Analysis (by Application, Type, End User). Chapter 8 Major Key Vendors Analysis of Polyester Forming Fabric Market. Chapter 9 Development Trend of Analysis. Chapter 10 Conclusion. About Us: GlobaI Info Research(GIR) is a report publisher, a customer, interest-based suppliers. Is in the best interests of our ...
(polyestertime) -- The government of India is planning to remove excise duty on recycled polyester fiber soon to provide some relief to the manufacturer of Recycled polyester staple fiber (PSF). The exemption would be granted only if PSF was recy ...
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Polyester Fibers LLC, a leading North American manufacturer of nonwoven polyester materials, announced that it has completed a management-led buyout
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3-hydroxybutyric acid) (PHB) is the most commonly produced polyhydroxyalkanoate formed naturally inside many genera of bacteria and archaea when nutrients are limited and a carbon-source is available in excess. These water-insoluble biopolyester spherical beads in the size range of 20-800 nm can be recombinantly produced by insertion of the required PHB biosynthesis genes into alternative bacterial hosts and then culturing the organisms under suitable conditions. A gene fusion can also be made to enable production of PHB beads which display the selected proteins abundantly at the surface of the bead. Vaccines are needed which stimulate cell-mediated immunity and are effective at reducing intracellular infections such as tuberculosis, neosporosis and many viral infections. These diseases are responsible for a huge burden to human and animal health. Particulate vaccines target antigen presenting cells and cellular immune responses to protein antigens are enhanced when particulate vaccines are ...
Detailed Study on the Polyester Medical Films Market. The latest report published by PMR on the Polyester Medical Films Market reveals that the market is expected to grow at a CAGR of ~XX% during the forecast period 2018 - 2028 and reach a value of ~US$ XX by the end of 2019. Further, by leveraging the data in the report, investors, established players, emerging market players, and stakeholders can develop effective business strategies to cement their position in the Polyester Medical Films Market.. The report ponders over the micro and macro-economic factors that are expected to shape the growth of the Polyester Medical Films Market in the upcoming decade. The report includes a SWOT analysis of some prominent players in the Polyester Medical Films Market wherein the business prospects of each player are discussed in detail.. This Press Release will help you to understand the Volume, growth with Impacting Trends. Click HERE To get SAMPLE PDF (Including Full TOC, Table & Figures) at ...
Polyesters and polyester containers having a reduced coefficient of friction and improved clarity are produced using an antiblock agent comprising a dried talc having from about 20 to about 300 ppm water or a fatty acid tethered talc. The use of these talcs result in polyesters and polyester containers having a coefficient of less than about 1.0 and a clarity with haze values of less than about 4%.
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Other names: 2-Oxepanone; «epsilon»-Caprolactone; Hexamethylene oxide, 2-oxo-; Hexanoic acid, 6-hydroxy-, «epsilon»-lactone; 1,6-Hexanolide; 6-Hexanolactone; 6-Hydroxyhexanoic acid lactone; 2-Oxacycloheptanone; 6-Caprolactone; Hexanoic acid, «epsilon»-lactone; «epsilon»-Kaprolakton; Placcel M; Hexanoic acid, 6-hydroxy-, lactone; «epsilon»-Caprolactone monomer; 1-Oxa-2-oxocycloheptane; 6-Caprolactone monomer; 6-Hexanalactone; 6-Hexanolide; 6-Hydroxyhexan-6-olide; Hexan-6-olide; Epsilon-caprolactone; E-caprolactone ...
TY - JOUR. T1 - Anisotropic poly (glycerol sebacate)-poly (-caprolactone) electrospun fibers promote endothelial cell guidance. AU - Gaharwar, Akhilesh K.. AU - Nikkhah, Mehdi. AU - Sant, Shilpa. AU - Khademhosseini, Ali. N1 - Publisher Copyright: © 2015 IOP Publishing Ltd.. PY - 2015/3/1. Y1 - 2015/3/1. N2 - Topographical cell guidance is utilized to engineer highly organized and aligned cellular constructs for numerous tissue engineering applications. Recently, electrospun scaffolds fabricated using poly(glycerol sebacate) (PGS) and poly(-caprolactone) (PCL) have shown a great promise to support valvular interstitial cell functions for the development of tissue engineered heart valves. However, one of the major drawbacks of PGS-PCL scaffolds is the lack of control over cellular alignment. In this work, we investigate the role of scaffold architecture on the endothelial cell alignment, proliferation and formation of organized cellular structures. In particular, PGS-PCL scaffolds with randomly ...
摘要:Based on the metabolic analysis, a succinate and polyhydroxybutyrate (PHB) co-production pathway was designed and engineered in Escherichia coli MG1655. Batch cultivation of the engineered E. coli revealed that it was able to accumulate both extracellular succinate and intracellular PHB simultaneously. PHB accumulation not only improved succinate production, but also reduced pyruvate and acetate secretion. With a consumption of 45 g l(-1) glucose, E. coli QZ1112 was shown to accumulate 24.6 g l(-1) succinate and 4.95 g l(-1) PHB in batch fermentation. The PHB content reached 41.3 wt.% of its cell dry weight, which suggested that the cell debris can be used as value added by-product. ...
TY - JOUR. T1 - Scale-up study of high osmotic pressure chromatography for separation of poly(ε-caprolactone). AU - Lee, Dean. AU - Teraoka, Iwao. PY - 2003/5/9. Y1 - 2003/5/9. N2 - Methods to prepare fractions of poly(ε-caprolactone) with a narrow molecular mass distribution in large quantities have been examined using high osmotic pressure chromatography under the theta condition. Effects of column dimension and coupling columns in series on the separation resolution were studied. We found that use of a thicker column can improve the resolution if adverse effects of viscous fingering are avoided. We also demonstrated that coupling the columns results in a better separation if the second column does not adsorb high-molecular-mass components purified in the first column.. AB - Methods to prepare fractions of poly(ε-caprolactone) with a narrow molecular mass distribution in large quantities have been examined using high osmotic pressure chromatography under the theta condition. Effects of ...
The second and third bodies of research have involved the development of electrospun polycaprolactone (PCL) scaffolds in the micron scale range (2-14 µm) to allow good fibroblast infiltration. In vitro biocompatibility and infiltration behaviour of 3T3 GFP dermal fibroblasts, as an exemplar cell type on electrospun PCL scaffolds, were investigated. Additionally, synthesis of polycapolactone-poly(ethylene glycol)-block copolymer (PCL-b-PEG) was included in this study, where it was hypothesized that PCL-b-PEG containing scaffolds may enhance degradation, wettability, and cell-compatibility as previous research has reported. Caprolactone-poly(ethylene glycol) block copolymer were blended with commercial caprolactone (PCL-b-PEG/PCL) and electrospun scaffolds were developed and fully characterised. Selected scaffolds (PCL and PCL-b-PEG/PCL with an average fibre diameter of 4 μm) were compared in terms of: i) in vitro biocompatibility and cell infiltration, ii) mechanical properties, iii) ...
Id like to start screen printing on polyester/polyester blends. Has anyone attempted this with Jacquards Professional Screen Printing inks ...
In our offer you will find extremely durable polyester mesh with excellent elasticity. Polyester is used by our company in the process of making finished textile products. Combined with a polyurethane foam by flame lamination is an indispensable element of finished textile products used in the manufacture of products such as materials for covers for car seats / materials for seat covers, upholstery materials - designed for manufacturers and users, among others, furniture, seats, vehicle interiors as well as manufacturers and users of public transport vehicles: buses, trams, railways and airplanes. Nets polyester produced by SAGAN textile used in the automotive industry, for manufacturers of cars and trucks, furniture industry and industry kaletniczym apply mainly as strengthening stability laminated textile / textile. As a producer of polyester mesh we make every effort to ensure the material was of the highest quality.. The main features of our polyester mesh - knitted single bearing ...
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Thermoplastic Polyester Elastomer (TPEE) Market Thermoplastic Polyester Elastomer (TPEE) is a block copolymer who contains a hard segment of polyester and a soft segment of polyether; wherein the amorphous is formed from the soft segment of polyether and the uncrystallized polyester. Micro-crystals play a role as physical crosslinking points formed from the hard segment of…
Stem cell and tissue engineering offer us with a unique opportunity to research and develop new therapies for treating various diseases that are otherwise incurable using traditional medicines. However, development of these new therapies replies upon the establishment of in vitro cell culture and differentiation systems that mimic in vivo microenvironments required for cell-cell and cell-ECM interaction. The development of these cell culture systems depends upon the identification of appropriate biomaterials and cell sources. Biomaterials should be carefully selected and fabricated into scaffolds for supporting cell growth and differentiation. In this study, we explored the fabrication of 3D electrospun nanofiber scaffolds and demonstrated the feasibility of using these scaffolds for supporting cell growth. The material that we used for scaffold fabrication is a polymer, polycaprolactone (PCL). We discovered that the electrospun PCL nanofibers are highly hydrophobic, unsuitable for cell growth. The
Hybrid constructs represent substantial progress in tissue engineering (TE) towards producing implants of a clinically relevant size that recapitulate the structure and multicellular complexity of the native tissue. They are created by interlacing printed scaffolds, sacrificial materials, and cell-laden hydrogels. A suitable biomaterial is a polycaprolactone (PCL); however, due to the higher viscosity of this biopolymer, three-dimensional (3D) printing of PCL is slow, so reducing PCL print times remains a challenge. We investigated parameters, such as nozzle shape and size, carriage speed, and print temperature, to find a tradeoff that speeds up the creation of hybrid constructs of controlled porosity. We performed experiments with conical, cylindrical, and cylindrical shortened nozzles and numerical simulations to infer a more comprehensive understanding of PCL flow rate. We found that conical nozzles are advised as they exhibited the highest shear rate, which increased the flow rate. When working at a
Thermo-responsive multiblock poly(ester urethane)s comprising poly(ε-caprolactone) (PCL), poly(ethylene glycol) (PEG), and poly(propylene glycol) (PPG) segments were synthesized. The copolymers were characterized by GPC, NMR, FTIR, XRD, DSC and TGA. Water-swelling analysis carried out at different temperatures revealed that the bulk hydrophilicity of the copolymers could be controlled either by adjusting the composition of the copolymer or by changing the temperature of the environment. These thermo-responsive copolymer films formed highly swollen hydrogel-like materials when soaked in cold water and shrank when soaked in warm water. The changes are reversible. The mechanical properties of the copolymer films were assessed by tensile strength measurement. These copolymers were ductile when compared to PCL homopolymers. Youngs modulus and the stress at break increased with increasing PCL content, whereas the strain at break increased with increasing PEG content. The results of the cytotoxicity ...
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TY - JOUR. T1 - Immunomodulatory Potential of Chitosan-graft-poly(ϵ-caprolactone) Copolymers toward the Polarization of Bone-Marrow-Derived Macrophages. AU - Papadimitriou, Lina. AU - Kaliva, Maria. AU - Vamvakaki, Maria. AU - Chatzinikolaidou, Maria. N1 - Publisher Copyright: © 2016 American Chemical Society. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.. PY - 2017/7/10. Y1 - 2017/7/10. N2 - In tissue engineering, the use of biomaterials as templates or scaffolds to guide tissue development in vivo provokes the inevitable action of the immune system of the host. This induced immune response often determines the success of the scaffold, including angiogenesis and regeneration or failure causing inflammation and fibrosis. Therefore, it is crucial to predict or even better to promote the proper immune response following implantation. The aim of the present study was to evaluate the immunomodulatory potential of chitosan-graft-poly(ϵ-caprolactone) copolymers (CS-g-PCL) by ...
Early buyers will receive 10% customization on reports.. Increasing stringent regulations on VOC emissions leading to the development of eco-friendly technologies, such as powder coatings and waterborne coatings, are replacing solvent-borne coatings. This in turn drives the demand for saturated polyester resin, as they are one of the principal resin systems for powder coatings, and show high performance owing to superior mechanical properties. These factors contribute to the growth of the saturated polyester resin market.. Liquid SPR accounted for the largest share of saturated polyester resin market. Liquid SPR are primarily used for coil & can coatings and other uses, such as industrial paints, automotive paints, and 2k PU coatings. The growing demand for trim, soffit, fascia, other aluminum products, and commercial construction products, such as metal roofing, cladding, and HVAC equipment is driving the coil coatings market, which in turn drives the demand for liquid saturated polyester ...
To: [email protected] Subject: Re: hull fairing From: Kevin [email protected] Date: Sun, 12 Sep 1999 00:28:23 -0400 Just a few facts that I know concerning the comparison of polyester resins to epoxy: Polyester is not an epoxy. It is a complete resin system that will slowly polymerize when its solvent is evaporated - though this may take months. That is why MEKP is added. It is a catalyst - not a component of the resin system - that speeds up polymerization, or curing. Epoxy is a true two-part resin system in that polymerization will not occur - over any length of time - unless the two components are mixed. Why epoxy is a better barrier coat than polyester and why epoxy doesnt blister... Epoxy is 100% solids (high quality epoxy, anyway, such as WEST, System 3, and others) meaning that there are no solvents - the lack of solvents is why epoxy resin and hardener do not have much of an odor, though some odor. The weight of cured epoxy will be the same as when it was liquid. Polyester resins ...
Wide trousers | Made from recycled polyester blend | Press folds for a formal look | Zip fly with contra button | Waistband with beltloops | Front pockets and paspel back pockets | The model is 177 cm and wears a size S/36 | RECYCLED POLYESTER | Recycled polyester is made by melting down existing plastic (mostly from bottles) and re-spinning it into new, high-quality polyester. This way, plastic can be reused, natural materials are conserved, and waste is diverted from landfills and our oceans
Wide trousers | Made from recycled polyester blend | Press folds for a formal look | Zip fly with contra button | Waistband with beltloops | Front pockets and paspel back pockets | The model is 177 cm and wears a size S/36 | RECYCLED POLYESTER | Recycled polyester is made by melting down existing plastic (mostly from bottles) and re-spinning it into new, high-quality polyester. This way, plastic can be reused, natural materials are conserved, and waste is diverted from landfills and our oceans
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Poly-ε-caprolactone (PCL) is chemically produced on an industrial scale in spite of the need for hazardous peracetic acid as an oxidation reagent. Although Baeyer-Villiger monooxygenases (BVMO) in principle enable the enzymatic synthesis of ε-caprolactone (ε-CL) directly from cyclohexanone with molecular oxygen, current systems suffer from low productivity and are subject to substrate and product inhibition. The major limitations for such a biocatalytic route to produce this bulk chemical were overcome by combining an alcohol dehydrogenase with a BVMO to enable the efficient oxidation of cyclohexanol to ε-CL. Key to success was a subsequent direct ring-opening oligomerization of in situ formed ε-CL in the aqueous phase by using lipase A from Candida antarctica, thus efficiently solving the product inhibition problem and leading to the formation of oligo-ε-CL at more than 20 g L(-1) when starting from 200 mM cyclohexanol. This oligomer is easily chemically polymerized to PCL ...
Premier Solar Athens Coconut Polyester from the Serene Escape Collection is a dreamy tile print in gray and white on a washed sand marbled ground in a 100% polyester plain weave 7oz. base cloth. As interpreted on fabric today, we take pleasure knowing that tile design and marble have a long history with architects and sculptors. With 60,000 double rubs, Premier Solar Athens Coconut outdoor fabric it is well suited for many soft good applications; including custom pillows, cushions, drapes, shower curtains and tabletop. Premier Solar Outdoor fabrics are designed to withstand extreme weather conditions. The bright, bold colors are created from a specialized UV pigment process. It is ideal for high-traffic areas as it is treated with a Durable Water Repellent finish, and is resistant to bleach, dirt, mildew and stains. This 100% Spun Polyester is fade resistant and UV tested for 1000 hours of direct sunlight, which equates to two years. Proudly made and printed in the USA. We highly recommend a ...
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Koster Glass Fibre Mesh 100m2. Koster Glass Fibre Mesh is a glass silk fabric and has very high tear resistance. It is resistant to movement free from plasticizers and highly resistant to alkalis.. Koster Glass Fibre Mesh is used to reinforce external waterproofing system such as KBE Liquid Film, Koster Deuxan 2c and Koster 21.. The application of Koster Glass Fibre Mesh used necessary on areas which are exposed to pressurized water and there is a risk of cracking as well as on connections, transitions and fillets and horizontally across buried roofs and podium decks.. The 100m2 pack size gives great value for large waterproofing projects. Also available in a 33m2 size for smaller projects. ...
ABC Industries has introduced the new Packa-Tex™ line of vinyl-laminated polyester fabrics for use in the automotive returnable packaging industry. The double-polish, clear curtain material with open 2.6-inch scrim is joined by the GM®-approved double-polish, clear curtain material, and the GM-approved 13-ounce translucent pouch fabric. Custom products can be engineered for specific needs.. The VentaSpan® line of vinyl-laminated polyester fabrics, for use in the structures industry, has expanded. In addition to the 14-ounce translucent white, 16-and 18-ounce blackout white structure materials, the line includes 14-ounce translucent fabrics in red, green, blue, yellow and black, and 16-ounce blackout fabrics in red, green, blue and yellow. ...
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Polyhydroxybutyrate (PHB) is one of the polyhydroxyalkanoates (PHAs) which has biodegradable and biocompatible properties. They are adopted in the biomedical field, in, for example, medical implants and drug delivery carriers. This study seeks to promote the production of PHB by Vibrio sp. BM-1, isolated from a marine environment by improving constituents of medium and implementing an appropriate fermentation strategy. This study successfully developed a glycerol-yeast extract-tryptone (GYT) medium that can facilitate the growth of Vibrio sp. BM-1 and lead to the production of 1.4 g/L PHB at 20 h cultivation. This study also shows that 1.57 g/L PHB concentration and 16% PHB content were achieved, respectively, when Vibrio sp. BM-1 was cultivated with MS-GYT medium (mineral salts-supplemented GYT medium) for 12 h. Both cell dry weight (CDW) and residual CDW remained constant at around 8.2 g/L and 8.0 g/L after the 12 h of cultivation, until the end of the experiment. However, both 16% of PHB content and
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Polyester agent additives[edit]. These molecular sieves are used to assist detergents as they can produce demineralized water ...
"the definition of polyester".. *^ "16 CFR Part 303 - RULES AND REGULATIONS UNDER THE TEXTILE FIBER PRODUCTS IDENTIFICATION ACT" ... Thousands of 40-foot containers of polyester flowers and plants are exported to many countries every year.[citation needed] ... Polyester has been the main material for manufacturing artificial flowers since the 1970s. Most artificial flowers in the ... Flowers described as being made of silk with a "real touch technique" are not made of silk, but rather are made of polyester, ...
The treatment of polyester waste through total glycolysis to fully convert the polyester to bis(2-hydroxyethyl) terephthalate ( ... Depending on purity of the recycled materials, polyester can be used today in most of the polyester manufacturing processes as ... Processing examples for recycled polyester. Recycling processes with polyester are almost as varied as the manufacturing ... PET-Recycling Forum; "Current Technological Trends in Polyester Recycling"; 9th International Polyester Recycling Forum ...
dimethyl terephthalate - can be copolymerized to form certain polyesters *polyesters - although there can be many types, ... In 1946, he invented Polyester. Polyethylene terephthalate (PET) bottles are made from ethylene and paraxylene. In 1938, Otto ... polyesters - any of several polymers with ester linkages in the main chain ...
Polyester (1981). *Hairspray (1988). *Cry-Baby (1990). *Serial Mom (1994). *Pecker (1998) ...
The properties of these polyesters also is affected by the cis/trans ratio of the CHDM monomer.[3] CHDM reduces the degree of ... It is a colorless low-melting solid used in the production of polyester resins. Commercial samples consist of a mixture of cis ... S. R. Turner, R.W. Seymour; T.W. Smith (2001). "Cyclohexanedimethanol Polyesters". Encyclopedia of Polymer Science and ... Via the process called polycondensation, CHDM is a precursor to polyesters. It is one of the most important comonomers for ...
Polyester (PET) film (Mylar) capacitors. Polyethylene terephthalate, Polyester (Hostaphan®, Mylar®). Smaller in size than ... The plastic films used as the dielectric for film capacitors are Polypropylene (PP), Polyester (PET), Polyphenylene sulfide ( ... and Polyester film with something about 40% are the most used film materials. The rest of something about 10% will be used by ...
Xylex (polyester / polycarbonate blend). *EO/EG (ethylene oxide / ethylene glycol). *Carbon black ...
Polyethylene terephthalate / Polyester / PET. 80. 1.3-1.4. 57-62. [4] Piano wire / ASTM 228 Steel. 1590-3340. 7.8. 204-428. [5] ...
acrylic polyesters, pure polyester PAN fibers are used to make carbon fiber by roasting them in a low oxygen environment. ... Microfibers in textiles refer to sub-denier fiber (such as polyester drawn to 0.5 denier). Denier and Dtex are two measurements ... polyester), which the chemist synthesizes from low-molecular weight compounds by polymerization (chain-building) reactions. The ...
Tokiwa Y, Suzuki T (November 1977). "Hydrolysis of polyesters by lipases". Nature. 270 (5632): 76-8. doi:10.1038/270076a0. PMID ... PETases can't catalyze the hydrolysis of aliphatic polyesters like polybutylene succinate or polylactic acid.[2] ... Tabushi I, Yamada H, Matsuzaki H, Furukawa J (August 1975). "Polyester readily hydrolyzable by chymotrypsin". Journal of ... Discoveries of polyester degrading enzymes date at least as far back as 1975 (α-chymotrypsin)[6] and 1977 (lipase) for example. ...
FR-6, matte glass and polyester. *G-10, woven glass and epoxy - high insulation resistance, low moisture absorption, very high ... CEM-5, woven glass and polyester. *PTFE, ("Teflon") - expensive, low dielectric loss, for high frequency applications, very low ... matte glass and polyester), G-10 (woven glass and epoxy), CEM-1 (cotton paper and epoxy), CEM-2 (cotton paper and epoxy), CEM-3 ... non-woven glass and epoxy), CEM-4 (woven glass and epoxy), CEM-5 (woven glass and polyester). Thermal expansion is an important ...
Polyester coating is often used around a Vectran core; polyurethane coating can improve abrasion resistance and act as a water ... Chemically it is an aromatic polyester produced by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2- ...
In addition, polyester, like many synthetic fabrics, melts when exposed to high heat. The melted polyester can adhere to the ... wool is less flammable than polyester, and would self-extinguish in the absence of an ignition source. Polyester would not self ... Product Comparison of Merino Wool and Polyester. Baby Sleep Sacks. Dr S R Collie, Dr A Tasker and M F Hnat. July 2010 ... They comment that with polyester sleep sacks their babies had woken hot and clammy, and some developed heat rash. The issue of ...
... polyester fibers, products converting and IT products. ... Polyester/Recycled polyester fibers/textiles. *Closed-loop ...
Leroux, F.; Perwuelz, A.; Campagne, C.; Behary, N. (2006). "Atmospheric air-plasma treatments of polyester textile structures ...
"Kornit unveils Avalanche Poly Pro Industrial Polyester Printer". Graphic Arts Magazine. 5 April 2019. Retrieved 25 November ... the first digital direct-to-garment print system developed specifically for polyester and poly-blend fabrics, as well as the ...
Fiberglass and polyester resin. 38 in. x 86 in. x 6 1/8 in. San Francisco Museum of Modern Art, San Francisco.[60] ... Repetition 19, III, 1968, fiberglass and polyester resin, 19 units each 19 to 20 1/4" (48 to 51 cm) x 11 to 12 3/4" (27.8 to ... Fiberglass, polyester resin, latex, and cheesecloth. 122 inches x 300 in. Guggenheim Museum, New York. [64] ... Fiberglass and polyester resin. 19 units, dimensions variable. Museum of Modern Art, New York.[59] ...
Polyester epoxies are used as powder coatings for washers, driers and other "white goods". Fusion Bonded Epoxy Powder Coatings ... However, polyester resins are much cheaper. Epoxy resins typically require a precise mix of two components which form a third ... By contrast, polyester resins can only bond using the first two of these, which greatly reduces their utility as adhesives and ... By contrast, polyester resins are usually made available in a 'promoted' form, such that the progress of previously-mixed ...
Polyesters, polyamides, and isocyanates are derived via acid-base catalysis. Most carbonylation processes require metal ...
Common materials include felt, foam, polyester, and Polypropylene blend materials. Waterproofing may be necessary based on ...
The polyester film base is often recycled.[citation needed] EKs (showprints) are even more expensive as they are almost ...
Most ticking is made with polyester yarns. More expensive mattress fabrics may contain a combination of polyester with rayon, ... polyester fiber, cotton fiber, wool fiber and nonwoven fiber pads. In Europe and North America, mattress makers have begun ... as well as polyester fiberfill in the bed's top upholstery layers. In 1899 James Marshall introduced the first individually ...
The "Pillar" device is a treatment for snoring and obstructive sleep apnea; it is thin, narrow strips of polyester. Three ... it also found that the polyester strips work their way out of the soft palate in about 10% of the people in whom they are ...
Lemarchand, Caroline; Couvreur, Patrick; Besnard, Madeleine; Costantini, Dominique; Gref, Ruxandra (2003). "Novel polyester- ...
Polyester adipate. *Camphor (obsolete)[8]:30. *Stabilizers, to prevent or slow down self-decomposition[7]:307-311*Diphenylamine ...
SKC developed polyester films firstly in Korea, by its own efforts. Nowadays, SKC is one of the best polyester film makers in ... the company manufactured Korea's first polyester fiber on company grounds. It established Sunkyong Fibers Ltd. in July 1969, ...
Polyesters have dipole-dipole bonding between the oxygen atoms in C=O groups and the hydrogen atoms in H-C groups. Dipole ... This happens in the polymerization of PET polyester. The monomers are terephthalic acid (HOOC-C6H4-COOH) and ethylene glycol ( ... Epoxies and chains containing aromatic functionalities are especially susceptible to UV degradation while polyesters are ... such as in polyester. Newer methods, such as plasma polymerization do not fit neatly into either category. Synthetic ...
Polyesters are found in plastics. Esters can also do many reactions. It is very easy to change the ether part of the molecule ...
Neoprene was the first polyester. Carothers went on to invent nylon, a true silk replacement, in 1935. Paul Flory was awarded ... thermoplastics: polyethylene, Teflon, polystyrene, polypropylene, polyester, polyurethane, polymethyl methacrylate, polyvinyl ...
Retrieved from "https://en.wiktionary.org/w/index.php?title=Polyester&oldid=44350951" ...
The major industrial polyesters include polyethylene terephthalate, polycarbonate, degradable polyesters, alkyds, and ... Polyesters are polymers made by a condensation reaction taking place between monomers in which the linkage between the ... unsaturated polyesters. PET is produced by the step-growth polymerization of ethylene glycol and terephthalic acid. The ... Polyesters. Polyesters are polymers made by a condensation reaction taking place between monomers in which the linkage between ...
Award-winning news and culture, features breaking news, in-depth reporting and criticism on politics, business, entertainment and technology.
Polyester. 1981, Comedy, 1h 26m. 27 Reviews 5,000+ Ratings What to know. critics consensus As proudly tacky as its titular ... Polyester stands firmly as a gateway between the gross-out films of Waters past and the soft-hearted sentimentalist ones that ... Polyester is the start of a turning point in John Waters career, the start of this radical outsider entering the mainstream. ... Polyester is definitely one of Waterss best films, and I highly recommend attending an Odorama screening for a unique night ...
Find your adidas Recycled Polyester - Apparel at adidas.com. All styles and colors available in the official adidas online ...
Polyester often conjures up images of John Travolta dominating the dance floor in Saturday Night Fever. But its now shedding ... The Plight of Polyester. Polyester often conjures up images of John Travolta dominating the dance floor in "Saturday Night ... 1,000-plus polyester designs. (See related article.) -Rachel Dodes and Christina Passariello. Updated March 1, 2008 12:01 a.m. ...
Fishtail Shop womens skirts at M&S. From on-trend flattering maxi skirts to pencil skirts, midi skirts, prints leather and denim skirts for all occasions. Buy now.
Polyester Top up your sock drawer with fresh womens styles in cotton fabrics and rainbow colours. Discover the new arrivals at ...
Black led the Polyesters to move into the next round for the first time in four conferences. Semifinalist Qualified in Round of ... The Polyesters signed up Norman Black, who played for the Detroit Pistons in the Southern California Summer Pro league, as ... The 1981 Tefilin Polyesters season was the second and final season of the franchise in the Philippine Basketball Association ( ...
The 1980 Tefilin Polyesters season was the first season of the franchise in the Philippine Basketball Association (PBA). ...
Because of its easy application and durability, polyester resin is also applied to patch cracks and holes that need to remain ... Polyester resin is most commonly used in the manufacturing of boats, surfboards, kayaks and other nautical vessels. ... Wear heavy-duty gloves, safety glasses and a respiration mask when mixing polyester resin. Polyester resin is highly flammable ... Set up the polyester resin mixing supplies in a well-ventilated area. An open garage or an outdoor work area is advised. Do not ...
Polyester and spandex, although clingy, can sometimes be a bit too big, so if you are trying to get these materials to fit just ... How to Shrink Polyester & Spandex By Amy Davidson Updated April 17, 2017 ...
... s largest selection and best deals for Christina Love Geometric Polyester Dresses. Shop with confidence on eBay! ... 95% polyester 5% spandex. Very stretchy for an accommodating fit. Weve tried to show this in the pictures the best we could. ... Material: 95% Polyester 5% Spandex. Neckline: Deep V~Neck. Length: Falls at knee. Condition: In great used condition. Shows ... CHRISTANALOVE BLACK & PINK LONG DRESS - SIZE 6 - Stunning Black & Pink Polyester-Spandex - WASHABLE - Long Slip on Style - Wide ...
Theyre the finest of polyester and I didnt pay for them!. Footstomper Witness: I seen it, man, I seen this weird lookin dude ... Polyester is a 1981 film about an unhappy housewife who struggles with her dysfunctional, unloving family. ... Retrieved from "https://en.wikiquote.org/w/index.php?title=Polyester&oldid=2536713" ...
... forming polyesters by polycondensing the oligomers and the prepolymers in a weight ratio ranging from 1:0.1 to 1:90, thereby ... providing polyesters of improved color and low DEG content in a short time. ... A method for forming polyesters (polyethylene terephthalate, PET) having a high degree of polymerization with improved color ... Polyester process using a pipe reactor. US8470250. 4 Abr 2011. 25 Jun 2013. Grupo Petrotemex, S.A. De C.V.. Polyester ...
... wherein the polyester layer is coated on at least one of its bonding surfaces with an additional layer of metal, glass, mineral ... Laminates of one of more layers of a saturated thermoplastic polyester, one or more continuous metal layers and one or more ... Polyester-metal laminates are known which consist of a layer of polyester, a continuous layer of metal and a film of adhesive ... The present invention relates to polyester-metal laminates which have superior peeling resistance to the known polyester-metal ...
Polyester yarn: invest in this vers... by Fiber Partner 529 views * Global and china polyester yarn mar... by Avinash Gogawale ... 4. Our Products: Industrial Polyester Yarns Industrial Polyester Yarn Weaving Yarn Knitted Yarn ... We are one of the prominent processors and suppliers of a wide variety of Cotton Spun Yarns, Combed Cotton Yarn, Polyester ... Gopinath Spinning Private Limited, Vadodara,Polyester Yarn * 1. We are one of the prominent processors, exporter and suppliers ...
Polyester Tape 8991 is a general purpose tape that excels in high temperature masking operations such as powder coat painting. ... In addition, 3M™ Polyester Tape 8991 removes without leaving behind adhesive residue, for a clean finish. Our Polyester Tape ... 3M™ Polyester Tape 8991 is available in a variety of sizes Meets the Demands that Come with High-Temperature Applications We ... 3M™ Polyester Tape 8991 (PDF, 170.7 Kb) can be used in many applications, including: *Masking in e-coating, electroplating and ...
Polyester compositions having present a small amount of a salt of salicyclic acid and a cation of a metal from Group IA of the ... Polyester compositions having present a small amount of a salt of salicyclic acid and a cation of a metal from Group IA of the ... Polyester compositions having present a small amount of a salt of salicyclic acid and a cation of a metal from Group IA of the ... Quick-crystallizing polyester composition. CN100519653C. Apr 15, 2004. Jul 29, 2009. 三浶普利牴夏吇杌斐有陘公叻. Fiberglass enhanced PCT ...
... these Munich Polyester Tote Bags are perfect for hauling around groceries, personal items, and everything in-between. ... Shop for Munich Polyester Tote Bags, messenger bags, tote bags, laptop bags and lunch bags in thousands of designs to fit your ...
Shop polyester formfitting dress at Neiman Marcus, where you will find free shipping on the latest in fashion from top ...
In a typical washing cycle, clothing made from polyester should be washed and dried at the hottest water and highest heat ... Polyester shrinks only when it is washed at a very high temperature. ... Polyester shrinks only when it is washed at a very high temperature. In a typical washing cycle, clothing made from polyester ... To successfully shrink polyester, the cycle should be repeated multiple times.. To achieve maximum polyester shrinkage, the ...
But the Fox Racing executive seems almost as excited by something seemingly more mundane-a new polyester fabric. Thats ... just basic polyester.". "When I saw it at [the OR show]," Edward recounted, "I said, Oh man, you guys have got something here ... Not Your Fathers Polyester. Eastman Avra™ is creating next-generation comfort in performance apparel. By Robert Grace - Nov 16 ... Avra™ is creating new standards for what polyester can do. Edwards wants Fox to be able to use Avra across its whole spectrum ...
Polyesters composed of repeated units of aliphatic diols and aliphatic diacids or of aliphatic diols and aliphatic and aromatic ... Kristopher McNeill, ETHZ) we plan to advance a more concise understanding of the fate of biodegradable polyesters in soils. ... Microbial degradation of synthetic polyesters. Accumulation of synthetic, non-biodegradable plastic materials in the ...
The use of recycled polyester fibres is now common in the 21st century. Increasingly, fashion insiders claim the blend is a ... Polyester was first patented in the UK in 1941 by British chemists John Whinfield and James Dickson. ... A polyester-cotton blend is more flammable than pure polyester, but its not as flammable as pure cotton. On a scale of ... Polyester-cotton blends require less care, but they do require more care than most pure cotton or polyester fabrics. Cotton- ...
Read the Polyester movie synopsis, view the movie trailer, get cast and crew information, see movie photos, and more on Movies. ...
Sanghi Polyesters (SANGHIPOLY) - Business Standard News and more from Business Standard News ... Sanghi Polyesters Ltd. (SANGHIPOLY) - Peer Group. .table td{text-transform:none}. COMPANY. PRICE. (In Rs). CHG. (%). MKT CAP. ( ... Quick Links for Sanghi Polyesters:. * News. Announcements Brokerage Reports Business Earnings Sector ...
Futura Polyesters Mf Holding, Futura Polyesters updates and more at Business Standard news. , Page 1 ... Quick Links for Futura Polyesters:. * News. Announcements Brokerage Reports Business Earnings Sector ...
  • In recent years, polyesters, especially polyethylene terephthalate (PET), have been used in manufacturing fibers for clothes, film for magnetic tapes, food containers and resins. (google.es)
  • Polyester and spandex, although clingy, can sometimes be a bit too big, so if you are trying to get these materials to fit just right, learn the steps to making your garment a little smaller. (ehow.com)
  • Material: 95% Polyester 5% Spandex. (ebay.com)
  • CHRISTANALOVE BLACK & PINK LONG DRESS - SIZE 6 - Stunning Black & Pink Polyester-Spandex - WASHABLE - Long Slip on Style - Wide Elastic at Waist - Gently Worn - In Excellent Condition! (ebay.com)
  • Polyester/rayon/spandex. (neimanmarcus.com)
  • Polyester/viscose/cotton/spandex. (neimanmarcus.com)
  • Nylon/polyester/metallic/spandex. (bergdorfgoodman.com)
  • Cotton/polyester/Lycra spandex. (bergdorfgoodman.com)
  • It is 78% polyester, 19% rayon, and 3% spandex. (thriftyfun.com)
  • 90% nylon, 10% spandex, and a 100% polyester. (thriftyfun.com)
  • I am assuming this is a one piece dress which means the dye will have to be for polyester, nylon and spandex. (thriftyfun.com)
  • The vest is 69% polyester, 29% rayon, and 2% spandex. (thriftyfun.com)
  • A method for forming polyesters (polyethylene terephthalate, PET) having a high degree of polymerization with improved color and lower diethylene glycol (DEG) content in a shorter period of time than in known methods. (google.es)
  • The present invention relates to a method for forming polyesters from terephthalic acid and ethylene glycol and, more particularly, to a method for forming polyesters (polyethylene terephthalate) which possess improved coloration and low diethylene glycol (DEG) content. (google.es)
  • The two most used types of polyester are polyethylene terephthalate, or PET, and poly-1, 4-cyclohexylene-dimethylene terephthalate, known as PCDT. (reference.com)
  • Polyesters composed of repeated units of aliphatic diols and aliphatic diacids or of aliphatic diols and aliphatic and aromatic diacids represent commercial materials that have promising properties for replacing problematic polyethylene based materials in agriculture. (eawag.ch)
  • You can select 'Polyester' from under either the thermoplastic or thermoset polymer headings, or specific polyester types such as 'Polyethylene Terephthalate (PET)', and you will be presented with a list of descriptive names. (matweb.com)
  • Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). (encyclopedia.com)
  • The subject of the probe, biaxially oriented polyethylene terephthalate (BOPET), is a polyester film used in flexible packages, electrical insulation and other industrial applications. (nationmultimedia.com)
  • 2. The polarizer of claim 1 wherein said polyester film comprises polyethylene terephthalate. (google.com.au)
  • Overall, they aren't as versatile as aromatic polyesters such as polyethylene terephthalate (PET), which is commonly used to make water bottles. (howstuffworks.com)
  • The 1981 Tefilin Polyesters season was the second and final season of the franchise in the Philippine Basketball Association (PBA). (wikipedia.org)
  • Polyester is a 1981 film about an unhappy housewife who struggles with her dysfunctional, unloving family. (wikiquote.org)
  • As proudly tacky as its titular fabric, Polyester finds writer-director John Waters moving ever so slightly into the mainstream without losing any of his subversive charm. (rottentomatoes.com)
  • But the Fox Racing executive seems almost as excited by something seemingly more mundane-a new polyester fabric. (core77.com)
  • Once the fabric is made, the removable polymer washes away in hot water, resulting in ribbon-like fibers that have a combined small size and flat shape that is unique compared to conventional polyester fibers. (core77.com)
  • Polyester can add a revolutionary amount of stretch to fabric. (ehow.co.uk)
  • Cotton-polyester fabric is also resistant to shrinkage as well as moth and sun damage. (ehow.co.uk)
  • An allergy to polyester is a type of fabric allergy, also referred to as textile dermatitis. (healthline.com)
  • The best way to avoid the symptoms you experience from polyester is to avoid the fabric. (healthline.com)
  • This discovery allowed polyester manufacturers to transform the texture and feel of polyester into a super-soft, durable, lightweight fabric. (ehow.co.uk)
  • Polyester was introduced to the American public in 1951 as the fabric that doesn't need to be ironed. (ehow.co.uk)
  • this quality makes polyester the perfect fabric for the application of water-, soil-, and fire-resistant finishes. (encyclopedia.com)
  • Polyester clothing can be preshrunk in the finishing process, and thereafter the fabric resists shrinking and will not stretch out of shape. (encyclopedia.com)
  • Features a polyester foam padding layer and fluffy fabric lining for bump and shock absorption Side pockets of the case are ideal for storage of small items such as power adapters, cables, pens Top handles of the case enable you to carry your laptop in. (pricegrabber.com)
  • External Dimensions: 14.37 x 0.79 x 10.24 inches (L x W x H). This laptop sleeve with strap features a polyester foam padding layer and soft fabric lining for bump and shock absorption and. (pricegrabber.com)
  • Adidas ClimaCool - Relying on the DuPont patented and designed CoolMax, a spun polyester fiber created to efficiently evaporate perspiration, Adidas ClimaCool fabric works to keep players cool and dry as it removes moisture from the skin. (yourdictionary.com)
  • 50% polyester is the usual choice, though terry cloth and other kinds of fabric are available. (yourdictionary.com)
  • Using Rit Dye on Polyester Fabric? (thriftyfun.com)
  • Dyeing Polyester/Rayon Fabric a Lighter Color? (thriftyfun.com)
  • Viscose/polyester. (neimanmarcus.com)
  • Made with upcycled cotton fibers, they get better and better with every wash. 88% cotton, 10% polyester, 2% viscose in Frost Gray. (westelm.com)
  • Luxuriously soft, it's expertly jacquard woven in the USA from a durable blend of rayon, polyester and linen, and backed in natural flax linen. (williams-sonoma.com)
  • Polyester resins have allot of a solvent called styrene and this styrene evaporates as the polyester cures - this is why polyester resin smells really bad. (tripod.com)
  • Polyester is a laminating resin intended to be used for reinforcing fiberglass, just as it is in our hulls. (tripod.com)
  • Epoxy, though higher technology, costs 2 to 3 times as much as polyester resin. (tripod.com)
  • Polyester resin is most commonly used in the manufacturing of boats, surfboards, kayaks and other nautical vessels. (ehow.com)
  • Because of its easy application and durability, polyester resin is also applied to patch cracks and holes that need to remain watertight. (ehow.com)
  • Polyester resin comes in a wide range of colors and finishes to customize any project. (ehow.com)
  • The following steps will explain how to mix polyester resin. (ehow.com)
  • Set up the polyester resin mixing supplies in a well-ventilated area. (ehow.com)
  • Mix the polyester resin with a catalyst named methyl ethyl ketone peroxide (MEKP) to begin curing. (ehow.com)
  • Depending on the amount of resin needed, pour the appropriate ratios of polyester resin and MEKP into a heavy-duty plastic tub or bucket. (ehow.com)
  • The standard ratio is 1 oz. of MEKP to 1 gallon of polyester resin. (ehow.com)
  • Use a long wooden stirrer to gently stir together the polyester resin and the MEKP. (ehow.com)
  • Add the appropriate amount of color mix to the polyester resin if a color is desired. (ehow.com)
  • Apply the polyester resin to your project before this time elapses. (ehow.com)
  • Some polyester resin manufacturers will include a color and wax mix with the resin purchase. (ehow.com)
  • Wear heavy-duty gloves, safety glasses and a respiration mask when mixing polyester resin. (ehow.com)
  • Polyester resin is highly flammable. (ehow.com)
  • This specification covers a polyester resin in the form of film and film tape. (sae.org)
  • When you are looking to develop a new generation of tough unsaturated polyester resin-based coatings, composites or robust gel coat performance properties our unique portfolio, including allyl ethers, significantly improve performance. (perstorp.com)
  • Polyester film dielectric, aluminum foil electrode, copperply leads and epoxy resin coating in inductive type. (tubesandmore.com)
  • This specification covers coated round rods manufactured by the pultrusion process from glass fiber roving and a weather-resistant polyester resin binder. (sae.org)
  • If you need to narrow down the list of results to a polyester product with certain performance criteria , then MatWeb's Advanced Search or Property Search Page is a good place to start. (matweb.com)
  • For example, if you have an application that demands a flame retarded, anti-static thermoplastic polyester grade, you can enter a minimum UL94 Flammability rating of V-2 and a maximum surface resistance of 10 8 ohms in your search criteria. (matweb.com)
  • 2 Claims, 2 Drawing Figures 1 POLYESTER-METAL LAMINATES There is a market demand for hard, breakage resistant laminates formed with a layer of synthetic polymeric material of 0.3 mm to 100 mm in thickness. (google.com)
  • Polyester fiber is used as cushioning material in comforters, pillows and upholstery padding. (reference.com)
  • If you would like to scan the polyester entries in MatWeb, then the MatWeb Material Category Page is a good place to start. (matweb.com)
  • MATERIAL: Our Laptop Messenger Bag, Mouse Pad and Laptop skin made of Premium Quality of polyester which is naturally torn and damage resistant SIZE: Messenger Bag Size- 17.5" x 13.5" x 4.5" with 2 zipper pockets: 7"H x 10.5"W and 5" x 10.5" with many. (pricegrabber.com)
  • Material: External - Neoprene, Internal, Polyester. (pricegrabber.com)
  • High biogas yield (up to 677 mL/g TS) with high methane content (more than 60%), comparable with conventionally processed materials, confirmed the potential of polyester samples for anaerobic treatment in the case of their exploitation in agriculture or as a packaging material in the food industry. (environmental-expert.com)
  • Non-inductive polyester and oil caps, these film capacitors use oil-soaked polyester as di-electric material and are smooth and natural in sound. (tubesandmore.com)
  • 28/03/08 - The PCB Company now offers Polycarbonate and Polyester Labels. (ferret.com.au)
  • Industrial polyester fibers are used in conveyor-belt fabrics, plastic reinforcements, safety belts and other applications. (reference.com)
  • Fabrics made with Avra dry up to 50% faster than conventional polyester fabrics, helping wearers stay cooler and more comfortable during demanding physical activities. (core77.com)
  • This makes cotton-polyester blends more functional than pure cotton fabrics. (ehow.co.uk)
  • Polyester-cotton blends require less care, but they do require more care than most pure cotton or polyester fabrics. (ehow.co.uk)
  • The growing demand for cotton-polyester fabrics has been attributed to it being roughly 10 percent less expensive than pure cotton. (ehow.co.uk)
  • The cotton content of a blend can make cotton-poly fabrics more comfortable than their pure polyester counterparts. (ehow.co.uk)
  • While common allergens include grass, pollen, and dust, some people may be allergic to certain fabrics such as polyester. (healthline.com)
  • The properties of polyester fabrics vary depending on their composition, web structure and processing, but some general features are found with nearly all polyester fabrics. (ehow.co.uk)
  • Polyester is the number one manmade fibre used in fabrics, worldwide. (ehow.co.uk)
  • This drove more innovation in the industry as manufacturers began to hide or relabel polyester in new blended fabrics. (ehow.co.uk)
  • Polyester is used in the manufacture of many products, including clothing, home furnishings, industrial fabrics, computer and recording tapes, and electrical insulation. (encyclopedia.com)
  • Polyester has several advantages over traditional fabrics such as cotton. (encyclopedia.com)
  • In the filament form, each individual strand of polyester fiber is continuous in length, producing smooth-surfaced fabrics. (encyclopedia.com)
  • You'll find coverups made in other materials such as polyester and knit jersey, but if keeping comfortable is part of your plan while sitting or walking on the beach, it's best to select fabrics that are lightweight and non-clingy. (yourdictionary.com)
  • For me, it changed what poly can be," the 15-year Fox veteran said in a recent telephone interview, referring to long-established polyester fiber. (core77.com)
  • This same strategy can be used to find fiber-reinforced thermoplastic polyester composites. (matweb.com)
  • Now a more manageable number of carbon fiber reinforced polyester grades are returned - you can then review each of the complete property information datasheets, including properties such as tensile strength or dielectric constant. (matweb.com)
  • Fiber content: 65% polyester/35% cotton. (ebay.ca)
  • Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene. (encyclopedia.com)
  • In 1946, du Pont purchased the right to produce this polyester fiber in the United States. (encyclopedia.com)
  • Polyester was first patented in the UK in 1941 by British chemists John Whinfield and James Dickson. (ehow.co.uk)
  • To: [email protected] Subject: Re: hull fairing From: "Kevin" [email protected] Date: Sun, 12 Sep 1999 00:28:23 -0400 Just a few facts that I know concerning the comparison of polyester resins to epoxy: Polyester is not an epoxy. (tripod.com)
  • Why epoxy is a better barrier coat than polyester and why epoxy doesn't blister. (tripod.com)
  • All plastics absorb some moisture, chemically speaking, but polyester absorbs way, way more water than epoxy. (tripod.com)
  • Polyester, though it has adhesive qualities, is not as good for bonding as epoxy. (tripod.com)
  • Polyester will stick to cured polyester, but epoxy will bond much better. (tripod.com)
  • NEVER use polyester over epoxy, though. (tripod.com)
  • Epoxy will soak into wood (doesn't cure as fast as polyester helps here) and, being more water proof than polyester, will stay bonded indefinitely as long as all of the wood is encapsulated in epoxy. (tripod.com)
  • So, why don't boat manufacturers use epoxy instead of polyester? (tripod.com)
  • Epoxy molded fiberglass must also have a surface finish applied, polyester resins are used to gel coat the mold and then laminate and out pops a shiny finished hull! (tripod.com)
  • It is known to use nucleating agents in crystallizable polymers such as linear saturated polyesters of aromatic dicarboxylic acids. (google.com)
  • But since aromatic polyesters are completely resistant to microbial breakdown, a lot of time and effort is being pumped into finding viable alternatives in aliphatic polyesters. (howstuffworks.com)
  • Laminates of one of more layers of a saturated thermoplastic polyester, one or more continuous metal layers and one or more adhesive layers, wherein the polyester layer is coated on at least one of its bonding surfaces with an additional layer of metal, glass, mineral or ceramic particles of 10 to 100. (google.com)
  • As industrial materials, thermoplastic polyesters with melting points of at least 200C are known to have excellent mechanical properties, for example hardness, tensile strength, gliding properties, dimensional stability and low water adsorption, with constancy in these properties under varying climatic conditions. (google.com)
  • But in spite of these merits wide areas of use are closed to thermoplastic polyesters because their surfaces cannot be satisfactorily bonded to other materials. (google.com)
  • MatWeb has product data on about 6000 different grades of thermoplastic and thermoset polyester - PBT, PCT, PET, polytrimethylene terephthalate, polyester thermoplastic elastomers (TPEs), thermoset alkyds, polyester-based fiberglass, and thermoset SMCs and BMCs. (matweb.com)
  • Polyester-based thermoplastic elastomers (TPEs) or polyurethanes are categorized separately. (matweb.com)
  • You can select 'Polyester' from the list of category choices under thermoplastic or thermoset headings (or be even more restrictive and select only PBT) along with the appropriate property choices. (matweb.com)
  • Polyester is made into various types of yarn or thread and can include both natural and synthetic chemicals. (reference.com)
  • Natural polyesters are biodegradable, but most synthetic versions are not. (reference.com)
  • Polyester is an umbrella term that describes a manufactured fibre whose substance is any long-chain synthetic polymer where at least 85 per cent (by weight) of the polymer is an ester and terephthalic acid. (ehow.co.uk)
  • Ban plastic/polyester and other unnecessary synthetic chemicals as far as possible. (care2.com)
  • Take polycaprolactone ( PCL ), a synthetic aliphatic polyester that isn't made from renewable resources but does completely degrade after six weeks of composting. (howstuffworks.com)
  • In this work, anaerobic biodegradability of model aliphatic polyesters, poly(L-lactic acid) (PLA), and poly(ɛ-caprolactone) (PCL), in the form of powder and melt-pressed films with varying molar mass, was studied. (environmental-expert.com)
  • No comments were found for Anaerobic digestion of aliphatic polyesters . (environmental-expert.com)
  • The next three entries on this list are all biodegradable plastics called aliphatic polyesters . (howstuffworks.com)
  • Excellent used condition Xhiliration brand Green dress with Paisley print Boho / bohemian/ gypsy / fall fashion Long Sleeve with a bell ruffle at the end the back has 3 ties and has openings, such cute detailing side zipper Size Medium 100% Polyester Refer to measurements for best fit Smoke free home Thank you for looking please message me with any questions as all sales are final. (ebay.com)
  • In this collaborative project (Dr. Michel Sander, Prof. Kristopher McNeill, ETHZ) we plan to advance a more concise understanding of the fate of biodegradable polyesters in soils. (eawag.ch)
  • Hammock bed is made out of weather resistant spun polyester, hardwood spreader bar, and poly rope clew ends. (jcpenney.com)
  • We are one of the prominent processors and suppliers of a wide variety of Cotton Spun Yarns, Combed Cotton Yarn, Polyester YarnPlant that we have installed and erected with the help of German engineers helps us produce 250 tons per month. (slideshare.net)
  • Products knitted or woven from polyester yarn include clothing, blankets and home furnishings. (reference.com)
  • Sunbrella® weather-resistant polyester. (williams-sonoma.com)
  • Polyester is sensitive to alkalines and resistant to most conventional textile bleaches. (ehow.co.uk)
  • Polyester resins also have a bad reputation for eventually delaminating when used to glass over wood, such as plywood. (tripod.com)
  • Boat manufacturers will glass over plywood with polyester resins and boat yards make allot of money repairing rotted transoms in power boats. (tripod.com)
  • Both resins can be used to mold fiberglass, but polyester is more controllable by the amount of MEEK catalyst added so production time is reduced- get the finished hull out of the mold and get another one started. (tripod.com)
  • Key drivers for liquid polyester resins producers are to improve technical and environmental specifications but at the same time lower costs in a mature market. (perstorp.com)
  • Made of soft-spun polyester that retains its shape and resists mold and bacteria for years of long-lasting relaxation. (llbean.com)
  • Soft-spun polyester rope retains its shape and resists mold. (llbean.com)
  • In making PET, molten polyester flows to a wheel, where it is shaped into a ribbon. (reference.com)
  • 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472 ° F (280 ° C). Newly-formed polyester, which is clear and molten, is extruded through a slot to form long ribbons. (encyclopedia.com)
  • 3 After the polyester emerges from polymerization, the long molten ribbons are allowed to cool until they become brittle. (encyclopedia.com)
  • The present invention relates to polyester-metal laminates which are used as industrial materials and to a process for bonding flat polyester mouldings of 0.3 mm to 100 mm thickness to substrates. (google.com)
  • This invention relates to linear, saturated polyester compositions containing salts of salicylic acid as nucleating agents. (google.com)
  • Polyesters are long chains of esters and are used to make fibers and plastics. (yourdictionary.com)
  • based Eastman Chemical Co., Avra's ultra-thin polyester fibers are extruded and held together by a proprietary, removable polymer, enabling easy knitting or weaving of these bi-component fibers on conventional equipment. (core77.com)
  • Once the removable polymer washes away, it results in fibers that are a unique ribbon shape with a much smaller cross section than traditional round polyester fibers. (core77.com)
  • Many users start by viewing MatWeb's Overviews - 'generic' polymer entries at the top of the results set that give typical values and ranges that cut across the various manufacturers' polyester product lines. (matweb.com)
  • In this process, ethylene is the polymer, the chemical building block of polyester, and the chemical process that produces the finished polyester is called polymerization. (encyclopedia.com)
  • To successfully shrink polyester, the cycle should be repeated multiple times. (reference.com)
  • 11. The composition of claim 5 wherein the terephthalic acid (T): 2,6-naphthalenedicarboxylic acid (N) molar ratio is about 10:90 to about 60:40, the moles of hydroquinone (HQ) are equal to the total moles of terephthalic acid (T) and 2,6-naphthalenedicarboxylic acid (N), the liquid crystalline polyesters have melting points determined by differential scanning calorimetry (DSC) equal to or less than 375 C. (google.es)
  • It is also well known that the color and thermal stability of the resulting polyester products and the reaction kinetics are notably changed depending on the reaction catalysts used. (google.es)
  • This is because the reactions used for forming polyesters having a high degree of polymerization in a short period of time are accompanied by several undesirable side reactions that result in the polyester products being yellow in color, having an increased content of DEG, and a concentration of terminal carboxyl groups in excess of optimum levels. (google.es)
  • Although polyester-metal laminates produced in accordance with the teaching of this patent show better resistance to peeling than comparable untreated products, but still insufficient for many end uses. (google.com)
  • Polyesters are also used in canoes, liquid crystal displays, insulating tapes and many other products. (reference.com)
  • My pethates are polyester clothes and chemicals in hygiene products, as well as disharmonious music imposed on me, and uneasthetic cluttered spaces. (care2.com)
  • Berkshire Corporation, a manufacturer of contamination control products for cleanroom and critical environments, launches Choice® Edge polyester cleanroom wiper . (prweb.com)
  • The use of recycled polyester fibres is now common in the 21st century. (ehow.co.uk)
  • Polyester fibres cost less than their cotton counterparts. (ehow.co.uk)
  • The polyester fibres add resilience to the cotton ones. (ehow.co.uk)
  • The FTC recognises items containing recycled polyester fibres as being eco-friendly (if the fact is not negligible or deceptive). (ehow.co.uk)
  • When produced as industrial materials the said polyester-metal laminates are mainly used in machine and aircraft construction, in building and in the manufacture of sports goods such as skis. (google.com)
  • Polyester-metal laminates are known which consist of a layer of polyester, a continuous layer of metal and a film of adhesive between the polyester and the metal. (google.com)
  • Offering premium strength and durability, Gutermann Sew-All Polyester Thread is a first-rate thread choice for your next sewing project. (dickblick.com)
  • 2. The composition as recited in claim 1, wherein there is from about 0.1 percent to about 1.5 percent of said salt, based on the weight of the polyester. (google.com)
  • A molding composition based on linear saturated polyester such as poly(ethylene terephthalate) should result in a molded product having good physical properties including flexural strength, modulus, tensile strength and impact properties. (google.com)
  • The polyvinyl alcohol film had been laminated to a polyester support with a dispersed, aqueous composition of polyvinyl alcohol or polyurethane on its surface. (google.com.au)
  • Our polyester enclosures are targeted at highly demanding industrial environments due to their superb temperature resistance, high impact strength and sturdy construction. (ensto.com)
  • There are many reasons why people are shunning their cotton and polyester pillowcases for Silk pillowcases. (articlealley.com)
  • The principle ingredient used in the manufacture of polyester is ethylene, which is derived from petroleum. (encyclopedia.com)
  • 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410 ° F (150-210 ° C). (encyclopedia.com)
  • Some polyesters, such as suberin, occur naturally. (yourdictionary.com)
  • Naturally produced polyesters' may sound like a phrase lifted from a marketing campaign, but feed sugar to certain types of bacteria and you've got yourself a plastic production line. (howstuffworks.com)
  • No. 731,652, for instance, recommends prior treatment'of the polyester with aqueous alkali hydroxide solutions. (google.com)
  • Clothing Company magazine reports that polythene terephthalate (PET), polyester recovered from recycled soft drink bottles is currently the most common form of polyester incorporated into cotton blends. (ehow.co.uk)
  • Most polyester is made of polythene terephtalate. (ehow.co.uk)
  • DUCK RIVER TEXTILE Solid White Polyester Blackout Grommet Window Curtain 54 in. (homedepot.com)
  • Although polyester has environmental problems, it's actually a great choice for a shower curtain in that it lasts a long time, doesn't get too moldy and, when it does get some mold on the bottom, you can toss it in the washing machine. (yourdictionary.com)
  • Made of soft recycled polyester, the slim-fit garment with bare back is characterized by an intarsia motif with contoured lines. (prada.com)
  • It is important to make sure the water used during the washing is not too hot, as it can cause the polyester to harden. (reference.com)
  • To achieve maximum polyester shrinkage, the clothing should be ironed at a low-to-medium heat directly after it is washed in hot water. (reference.com)
  • While polyester is still in the partially cured or "green" state, another layer of polyester added will have a "chemical" bond. (tripod.com)
  • In a typical washing cycle, clothing made from polyester should be washed and dried at the hottest water and highest heat setting. (reference.com)
  • We engineered 3M™ Polyester Tape 8991 as a pressure-sensitive silicone adhesive that grabs on contact and offers high heat resistance, reducing failure due to softening, oozing and adhesive transfer. (3m.com)
  • PET is the most common type of polyester and is stronger than PCDT, which is more elastic and resilient. (reference.com)
  • Polyesters are polymers made by a condensation reaction taking place between monomers in which the linkage between the molecules occurs through the formation of ester groups. (britannica.com)