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polyisocyanate

polyisocyanate
  (ˌpɒlɪaɪsəʊˈsaɪəneɪt)
  [f. poly- + isocyanate s.v. iso- b.]
  Any organic compound containing two or more isocyanate groups; also applied to polymers prepared from such compounds, esp. polyurethanes.

1943 [see polyesteramide]. 1945 Chem. & Engin. News 25 Sept. 1615/2 The polyurethanes..are produced by the reaction of polyisocyanates with polyhydroxy compounds such as polyesters. 1958 Times Rev. Industry June 37/3 An I.C.I. special product known as Suprasec K is a 50 per cent. solution in ethyl acetate of a newly developed polyisocyanate designed for use in high-quality lacquers for wood, rubber, and other materials. 1959 Times 27 Apr. (Rubber Industry Suppl.) p. vi/7 Natural rubber, neoprene and polyisocyanates play the same part in ships as in hotels—for luxury upholstery, non-slipping table covering, fire-resisting foam bedding, floor covering, &c. 1968 E. R. Wells in C. R. Martens Technol. Paints, Varnishes & Lacquers xiii. 205 Urethane is now the accepted description for a group of polymers that are sometimes called polyurethanes, isocyanates or polyisocyanates.

Oxford English Dictionary

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