Aromatic polyimide composition comprising mixed solvent

Details Aromatic polyimide composition comprising mixed solvent Aromatic polyimide composition comprising mixed solvent

1985-03-20

1986-02-04

Anderson, Harold D.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524323, 524324, 524342, 524343, 524346, 528128, 528172, 528183, 528188, 528189, C08L 7908

Patent

active

045687153

ABSTRACT:
An aromatic polyimide composition usable for producing shaped articles, for example, films, or as varnish, lacquer, or bonding agent, comprises a high molecular weight aromatic polyimide resin which is a polycondensation-imidization product of an aromatic tetracarboxylic acid component comprising 50 molar % or more of 3,4,3',4'-biphenyltetracarboxylic acid, anhydride, salt, or ester with an aromatic diamine component including 50 molar % or more of 4,4'-diaminodiphenylether, and which is dissolved in a mixed solvent consisting essentially of 10% by weight or more of a first solvent component selected from naphthol and resorcin and the balance of a second solvent component selected from phenol and cresols.

REFERENCES:
patent: 3759913 (1973-09-01), Blackley
patent: 4290936 (1981-09-01), Sasaki et al.

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