Preparation process of heat-resistant polymers from polycarboxcy

Details Preparation process of heat-resistant polymers from polycarboxcy Preparation process of heat-resistant polymers from polycarboxcy

1986-12-19

1988-04-05

Anderson, Harold D.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

521119, 528 73, C08J 900, C08G 1808

Patent

active

047360089

ABSTRACT:
Disclosed herein is a process for preparing heat-resistant polymers by reacting an organic polyisocyanate with one or more compounds selected from the group consisting of organic polycarboxylic acids and organic polycarboxylic acid anhydrides in the presence of an alkali metal fluoride or an alkali metal fluoride combined with a quaternary onium salt as a catalyst.

REFERENCES:
patent: 3020262 (1962-02-01), Speranza
patent: 3487095 (1969-12-01), Mannelli et al.
patent: 3725319 (1973-04-01), Frisch
patent: 4001186 (1977-01-01), Onder
patent: 4061623 (1977-12-01), Onder

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