Transparent aromatic polyimide

Details Transparent aromatic polyimide Transparent aromatic polyimide

1985-12-16

1987-09-29

Kight, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528187, 528125, 528126, 528172, C08L 7908

Patent

active

046969942

ABSTRACT:
A transparent aromatic polyimide produced by polymerization and imidation of an aromatic tetracarboxylic acid containing as a principal component biphenyltetracarboxylic acid and an aromatic diamine containing as a principal component bis(aminophenoxy-phenyl)sulfone of the formula (I) or bis(aminophenoxy-phenyl)propane of the formula (II): ##STR1##

REFERENCES:
patent: 4526838 (1985-07-01), Fujioka et al.
patent: 4568715 (1986-02-01), Itantani et al.

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