Acetylene-terminated polyimide derivatives

Details Acetylene-terminated polyimide derivatives Acetylene-terminated polyimide derivatives

1978-07-25

1979-09-18

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

20415911, 20415915, 26032626, 428435, 428443, 428474, 528125, 528185, 528188, 528229, 528321, 528322, 528352, 528353, 526259, C08G 7312, C08G 7316

Patent

active

041683676

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 having a terminal --C.tbd.CH 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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