Liquid reactive compositions comprising polyisocyanates, epoxide

Details Liquid reactive compositions comprising polyisocyanates, epoxide Liquid reactive compositions comprising polyisocyanates, epoxide

1992-11-25

1994-07-05

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 57, 528 73, C08G 1822, C08G 1858, C08G 5930, C08G 5940, C08F28310, C08F 408, C08L 6302

Patent

active

053268334

ABSTRACT:
Reactive compositions liquid at a temperature lower than 70.degree. C., comprising: A) at least one organic polyisocyanate; B) a mono- or poly-epoxide, or a mixture of different mono- and/or poly-epoxides: C) a catalyst, liquid at a temperature lower than 70.degree. C., consisting of a solution of at least one alkali metal halide in a polyoxyalkylenic compound or in a mixture of different polyoxyalkylenic compounds, said polyoxyalkylenic compound containing at least one hydroxyl group of alcoholic type. These reactive compositions are able to gel and solidify rapidly at temperatures between 0.degree. and 70.degree. C., to form a glassy polymer of high softening point.

REFERENCES:
patent: 3020262 (1962-02-01), Speranza
patent: 3334110 (1967-08-01), Schramm
patent: 3494888 (1970-02-01), McElroy
patent: 4080345 (1978-03-01), Riemhofer
Chemical Abstracts, vol. 74, No. 6, Feb. 8, 1971, AN 23151s, Yokoyama, et al., "Synthesis of Polyoxazolidones Containing Phosphorous from Phenylphosphonic Diisocyanate with Glycidyl Ethers".

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