Novel copolyamideimides, prepolymers therefor and method for the

Details Novel copolyamideimides, prepolymers therefor and method for the Novel copolyamideimides, prepolymers therefor and method for the

1985-09-27

1988-03-01

Foelak, Morton

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

Synthetic resins

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

528 26, 528 73, 528 80, 528 84, 528125, 528126, 528128, 528172, 528185, 528188, 528189, 528352, 528353, 525428, 525432, 525436, C08G 7314

Patent

active

047286970

ABSTRACT:
Carboxy-terminated prepolymers are prepared by the reaction of a diamine, preferably an aromatic diamine, or a mixture thereof with a triamine, with a carboxy anhydride such as trimellitic anhydride and a dianhydride such as bisphenol A dianhydride. The prepolymers, or functional derivatives thereof, are then reacted with a diisocyanate or diamine, or a mixture thereof with a triisocyanate or triamine, preferably an aromatic diisocyanate, to produce copolyamideimides. The products prepared using triamines or triisocyanates are crosslinked. Other products containing alkyl or alicyclic groups attached to aromatic radicals can be oxidatively crosslinked, e.g., by heating in air.

REFERENCES:
patent: 4433131 (1984-02-01), Bolon et al.
patent: 4481339 (1984-11-01), Bolon

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