Polyimide derivatives

Details Polyimide derivatives Polyimide derivatives

1978-07-25

1979-09-18

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...

20415911, 20415915, 26032626, 528125, 528 26, 528185, 528188, 528221, 528229, 528321, 528322, 528352, 528353, 428435, 428443, 428474, C08G 7312, C08G 7316

Patent

active

041683668

ABSTRACT:
Novel, unsaturated polyimide-polyesters and processes for their preparation are disclosed herein. These new polyimides are derivatives of anhydride-terminated aromatic polyimides, from which they are prepared by esterification to provide unsaturated ester groups of a terminal --CH.dbd.CH.sub.2 group. These new compositions are more tractable than the original anhydride-terminated polyimides and can be converted at appropriate lower temperatures to crosslinked, insoluble, infusible polymers without by-product formation, thereby extending greatly the applications for which the aromatic polyimides can be employed.

REFERENCES:
patent: 3879349 (1975-04-01), Bilow et al.
patent: 3897395 (1975-07-01), D'Alelio
patent: 3998786 (1976-12-01), D'Alelio
patent: 4060515 (1977-11-01), D'Alelio

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