04316844 is referenced by 17 patents and cites 4 patents.

Novel compositions comprising unsaturated 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 unsaturated amide groups having terminal --CH.dbd.CH.sub.2 groups as hemi-amic acid groups or 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 unsaturated amide groups derived from monomeric tetracarboxylic dianhydrides. These are particularly useful as crosslinking agents.

Title
Polyimide derivatives having unsaturated terminal amic acid groups
Application Number
6/115482
Publication Number
4316844
Application Date
January 25, 1980
Publication Date
February 23, 1982
Inventor
Gaetano F D Alelio
South Bend
IN, US
Phillip A Waitkus
Sheboygan
WI, US
Agent
Walter J Monacelli
Assignee
Plastics Engineering Company
WI, US
IPC
C07D 519/00
C07D 403/14
C07D 403/12
C07D 403/10
View Original Source