Copolymer of polyimide oligomers and terephthalonitrile N,N-diox

Details Copolymer of polyimide oligomers and terephthalonitrile N,N-diox Copolymer of polyimide oligomers and terephthalonitrile N,N-diox

1978-04-24

1980-02-19

Lee, Lester L.

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

Synthetic resins

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

526259, 526263, 528170, 528228, 528322, 528487, 525436, 525377, C08G 7312

Patent

active

RE0302171

ABSTRACT:
We have disclosed a new class of thermosetting copolymers derived from terephthalonitrile N,N'-dioxide and polyimide oligomer that cure through addition reactions to form essentially void-free cured resins that exhibit outstanding high temperature stability. These copolymers may be formed from either acetylene terminated polyimide oligomers or nitrile terminated polyimide oligomers. Copolymers prepared in accordance with our invention exhibit little or no outgassing during cure and are extremely useful in the preparation of laminates where high temperature stability and high strength is required.

REFERENCES:
patent: 3436372 (1969-04-01), Hoegger
patent: 3437636 (1969-04-01), Angelo
patent: 3516967 (1970-06-01), Funer
patent: 3526610 (1970-09-01), Bower

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