Polyimide precursor, bismaleimide-based cured resin precursor an

Details Polyimide precursor, bismaleimide-based cured resin precursor an Polyimide precursor, bismaleimide-based cured resin precursor an

1995-03-29

1996-11-26

Mullis, Jeffrey C.

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

Synthetic resins

From carboxylic acid or derivative thereof

528170, 528172, 528173, 528176, 528183, 528185, 528188, 528220, 528229, 528310, 528322, 528342, 428395, 4284111, 4284735, C08G 7310

Patent

active

055786979

ABSTRACT:
A polyimide precursor having a molecular structure obtained by polymerizing (a) 0.97 to 1.03 molar equivalent of a diamine component containing 0.40 molar equivalent or more of aromatic diamine compound represented by the general formula (DA1), and (b) an acid anhydride component containing (1-n.sub.1 /2) molar equivalent of a tetracarboxylic dianhydride and n.sub.1 molar equivalent of at least one selected from the group consisting of maleic anhydride and maleic derivative anhydride, wherein n.sub.1 ranges from 0.02 to 0.40. ##STR1##

REFERENCES:
patent: 3356648 (1967-12-01), Rogers
patent: 5041520 (1991-08-01), Ohta et al.
patent: 5231162 (1993-07-01), Nagata
patent: 5354839 (1994-10-01), Yamashita et al.
patent: 5374708 (1994-12-01), Tamai et al.

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