Polyimide derivatives having acetylenic amic acid groups

Details Polyimide derivatives having acetylenic amic acid groups Polyimide derivatives having acetylenic amic acid groups

1980-01-25

1982-03-23

Berch, Mark L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260326E, 260326C, 260326N, 526259, 526260, 526263, 528 26, 528125, 528170, 528185, 528188, 528229, 528321, 528322, 528352, 528353, 542437, 542456, 546 68, 525434, 525471, C07D40314, C07D40312, C07D40310, C07D51900

Patent

active

043211984

ABSTRACT:
Novel compositions comprising acetylenic polyhemi-amic acid compositions and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by amidation to provide acetylenic amide groups having terminal .dbd.C.tbd.CH groups as hemi-amic acid groups of their derivatives. 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. Also included are monomeric compounds containing acetylenic amide groups derived from monomeric tetracarboxylic dianhydrides. These are particularly useful as crosslinking agents.

REFERENCES:
patent: 3897395 (1975-07-01), D'Alelio
patent: 3998786 (1976-12-01), D'Alelio
patent: 4097456 (1978-06-01), Barie, Jr.
patent: 4166168 (1979-08-01), D'Alelio
patent: 4168367 (1979-09-01), D'Alelio

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