Para- or meta-terphenyltetracarboxylic acid, dianhydride thereof

Details Para- or meta-terphenyltetracarboxylic acid, dianhydride thereof Para- or meta-terphenyltetracarboxylic acid, dianhydride thereof

1988-10-21

1990-03-27

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562410, 562412, 562413, 562415, 562488, C07C 63331, C07C30789

Patent

active

049122339

ABSTRACT:
Disclosed are a para- or meta-terphenyl-3,4,3",4"-tetracarboxylic acid or a dianhydride and a process for preparing the same. The para- or meta-terphenyl-3,4,3",4"-tetracarboxylic acid or a dianhydride thereof according to the present invention is a novel compound which is useful as a raw material for a polyimide having higher heat resistance and so on.

REFERENCES:
patent: 3270067 (1966-08-01), Wendler et al.
patent: 3576013 (1971-04-01), Cummings
patent: 3891633 (1975-06-01), Berlin et al.
patent: 4600798 (1986-07-01), Cella
Numata et al., Chemical Abstracts, vol. 106 (1987) 33650x.

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