polyurethane

polyurethane
   Any of various thermoplastic polymers that contain urethane. Polyurethanes can vary widely in their flexibility and rigidity — eraser-soft to bowling-ball-hard. They are typically used in resins, chemical-resistant coatings, elastomers, adhesives, fibers, and foams for padding and insulation. Polyurethanes can be obtained in cast sheets, bars, rods, and tubes, as well as in liquid forms in both water and oil-based formulas.

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  • Polyurethane — Polyuréthane Un polyuréthane (ou polyuréthanne) est un polymère d uréthane, une molécule organique. On appelle uréthane, ou plus couramment carbamate , tout composé produit par la réaction d un isocyanate et d un alcool conformément à la réaction …   Wikipédia en Français

  • Polyurethane — Pol y*ur eth*ane, n. (Chem.) any polymer containing {[ NH.CO.O ]} linkages; such polymers are much used as the basis of light but rigid foams for packaging ( {polyurethane foam}) and for hard coatings, as on floors. [PJC] …   The Collaborative International Dictionary of English

  • polyurethane — (n.) 1944, from POLYMER (Cf. polymer) + URETHANE (Cf. urethane) …   Etymology dictionary

  • polyurethane — ► NOUN ▪ a synthetic resin in which the polymer units are linked by urethane groups …   English terms dictionary

  • polyurethane — [päl΄ē yo͞or′ə thān΄] n. any of various synthetic polymers produced by the polymerization of a hydroxyl (OH) radical and an NCO group from two different compounds: used in elastic fibers, cushions, insulation, molded products, coatings, etc …   English World dictionary

  • Polyuréthane — Un polyuréthane (ou polyuréthanne) est un polymère d uréthane, une molécule organique. On appelle uréthane, ou plus couramment carbamate , tout composé produit par la réaction d un isocyanate et d un alcool conformément à la réaction… …   Wikipédia en Français

  • Polyurethane — Haushaltsschwämme aus weichem PUR Schaum Polyurethane (PU, DIN Kurzzeichen: PUR) sind Kunststoffe oder Kunstharze, welche aus der Polyadditionsreaktion von Diolen beziehungsweise Polyolen mit Polyisocyanaten entstehen. Charakteristisch für… …   Deutsch Wikipedia

  • polyurethane — /pol ee yoor euh thayn , yoo reth ayn/, n. Chem. a thermoplastic polymer containing the group NHCOO: used for padding and insulation in furniture, clothing, and packaging, and in the manufacture of resins for adhesives, elastomers, and fillers.… …   Universalium

  • polyuréthane — polyuréthanne ou polyuréthane [ pɔliyretan; pɔljyretan ] n. m. • 1960; de poly et uréthanne ♦ Polymère renfermant de nombreuses fonctions uréthanne. Mousse de polyuréthanne. ● polyuréthanne ou polyuréthane nom masculin Polymère renfermant dans… …   Encyclopédie Universelle

  • Polyurethane — A polyurethane, commonly abbreviated PU, is any polymer consisting of a chain of organic units joined by urethane links. Polyurethane polymers are formed by reacting a monomer containing at least two isocyanate functional groups with another… …   Wikipedia

  • polyurethane — [[t]pɒ̱lijʊ͟ərəθeɪn[/t]] polyurethanes N MASS Polyurethane is a plastic material used especially to make paint or substances which prevent water or heat from passing through. ...polyurethane varnish …   English dictionary

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