Method of preparing polyimide prepolymer from ethylenically unsa

Details Method of preparing polyimide prepolymer from ethylenically unsa Method of preparing polyimide prepolymer from ethylenically unsa

1984-07-03

1985-09-03

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528172, 528173, 528179, 528183, 528185, 528189, 528322, 528345, C08G 7312

Patent

active

045393923

ABSTRACT:
Polyimide prepolymers having excellent heat resistance can be prepared in one stage by the reaction of polyamines and aromatic double bond-containing dicarboxylic acids or derivatives thereof in the presence of oxide compounds of phosphorus without isolating any intermediate in the course of said reaction.

REFERENCES:
patent: 3732189 (1973-05-01), Crivello et al.
patent: 4465823 (1984-08-01), Berger et al.

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