Process for the preparation of para,para'-polyphenyldicarboxylic

Details Process for the preparation of para,para'-polyphenyldicarboxylic Process for the preparation of para,para'-polyphenyldicarboxylic

1989-05-16

1991-02-26

Lone, Werren B.

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

Organic compounds

Carboxylic acids and salts thereof

562416, 562417, C07C 51215

Patent

active

049963538

ABSTRACT:
A process for the preparation of polyphenyl dicarboxylic acids is disclosed. The process comprises contacting para,para'-diisoalkyl or dialkyl-polyphenyl or an oxidation intermediate thereof with oxygen under reaction conditions sufficient to form para,para'-polyphenyldicarboxylic acid. The process is optionally carried out in the presence of cobalt, manganese, and bromine compounds.

REFERENCES:
patent: 3644506 (1972-02-01), Williamson
patent: 3870754 (1975-03-01), Yamashita et al.
patent: 4197412 (1980-04-01), Kimura et al.
patent: 4314073 (1982-02-01), Crooks
patent: 4709088 (1987-11-01), Hirose et al.
patent: 4786753 (1988-11-01), Partenheimer et al.

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