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polyurethanes
Book article from: The Columbia Encyclopedia, Sixth Edition
polyurethanes , group of plastics that may be either...were formerly made from wood. Some polyurethanes are highly elastic materials that...stretch clothing, is a polyurethane. Polyurethanes are also used as decorative and protective...
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SIC 2865 Cyclic Organic Crudes and Intermediates and Organic Dyes and Pigments
Encyclopedia entry from: Encyclopedia of American Industries
...other chemicals to create many intermediates. Benzene intermediates are used to produce plastic resins, epoxy, nylon, polyurethanes, synthetic rubber, and detergents. The most common derivative of benzene is ethyl benzene/styrene, which accounts...
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thermosets
Book article from: The Columbia Encyclopedia, Sixth Edition
...during fabrication using chemicals, heat, or radiation; this process is called curing or vulcanization. Important thermosets include phenolics, ureas, melamines, epoxies, polyesters, silicones, rubbers, and polyurethanes.
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thermoplastics
Book article from: The Columbia Encyclopedia, Sixth Edition
...to permit fabrication by methods such as molding or extrusion. Thermoplastics include polyethylene, polypropylene, polystyrene, polyester, polyvinyl chloride, acrylics, nylons, spandex-type polyurethanes, and cellulosics.
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plastic
Book article from: The Columbia Encyclopedia, Sixth Edition
...reapplied. See epoxy resins ; polyacrylics ; polycarbonates ; polyethylene ; polyolefins ; polypropylene ; polystyrene ; polyurethanes ; polyvinyl chloride ; vinyl plastics . Molding of Plastic Plastics are available in the form of bars, tubes, sheets...
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Resins
Encyclopedia entry from: The Gale Encyclopedia of Science
...switch gears, pulleys, pot and cutlery handles unsaturated polyesters 1,496 construction and transportation industries polyurethanes 1,102 building insulation, refrigeration amino resins 2,185 wiring devices, molded products, electrical parts, adhesives...
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SIC 3086 Plastics Foam Products
Encyclopedia entry from: Encyclopedia of American Industries
...it a spongy structure. Polystyrene and polyurethane are used for rigid foams and vinyls and cellulose acetate. Linear polyurethanes have been traditionally used in flexible foams. By 1969, flexible urethane dominated the market with polystyrene running...
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