04060515 is referenced by 27 patents and cites 3 patents.

Aromatic polyimides with nitrile end groups are chain-extended (molecular weight increased) by polymerization using Lewis acid salts as catalyst. Molecular weights are increased with little or no by-product formation. These polyimides can be shaped and formed prior to the polymerization.

The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and nitrile compounds such as aminobenzyl cyanide and aminobenzonitrile.

Title
Chain-extending nitrile end-capped polyimides
Application Number
363801
Publication Number
4060515
Application Date
March 14, 1975
Publication Date
November 29, 1977
Inventor
Gaetano Francis D Alelio
South Bend
IN, US
Agent
Michael Best & Friedrich
Assignee
University of Notre Dame du Lac
IN, US
IPC
C08G 73/12
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