Oxirane polyimide copolymers

Details Oxirane polyimide copolymers Oxirane polyimide copolymers

1979-12-03

1981-07-07

Lieberman, Paul

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

Synthetic resins

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

525180, 525436, C08L 6300, C08L 7706

Patent

active

042775833

ABSTRACT:
The copolymers disclosed herein comprise the reaction products of polyoxirane or polyepoxide compounds with amine-terminated aromatic polyimides. The reaction of the oxirane group with the amine group produces hydroxylamine groups which connect the polyimide portion with the polyepoxide precursor portion of the resultant copolymer without by-product formation. These copolymers are more tractable than the original unreacted amine-terminated polyimides and can be converted at appropriate lower temperatures to insoluble, infusible polymers. Thus they can be fabricated economically at lower temperatures and pressures and extend greatly the number of applications for which the aromatic polyimides can be employed.

REFERENCES:
patent: 3179634 (1965-04-01), Edwards
patent: 3416994 (1968-12-01), Chalmers
patent: 3453292 (1969-07-01), Izumi
patent: 3663651 (1972-05-01), Traut
patent: 3838101 (1974-09-01), Steele
patent: 3839493 (1974-10-01), Balme

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