Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
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.
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patent: 4314073 (1982-02-01), Crooks
patent: 4709088 (1987-11-01), Hirose et al.
patent: 4786753 (1988-11-01), Partenheimer et al.
Burdett Kenneth A.
Lee Guo-shuh J.
Maj Joseph J.
Clarke Vera C.
Lone Werren B.
The Dow Chemical Company
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