Polyamido-acid copolymer and its manufacture

Details Polyamido-acid copolymer and its manufacture Polyamido-acid copolymer and its manufacture

1991-08-02

1993-11-02

Foelak, Morton

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

Synthetic resins

From carboxylic acid or derivative thereof

528 26, 528 28, 528125, 528126, 528128, 528170, 528172, 528173, 528176, 528220, 528350, C08G 6926

Patent

active

052584879

ABSTRACT:
The present polyamido-acid copolymer has a polymerization backbone chain represented by the following formula: ##STR1## wherein q represents a bivalent organic group and R represents a tetravalent aromatic group. This copolymer forms a polyimide resin film excellent in adhesion to various inorganic substances and mechanical strength.

REFERENCES:
patent: 4499149 (1985-02-01), Berger
patent: 4847358 (1989-07-01), Kojima et al.

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