PROCESS FOR PREPARING PYROMELLITIC ACID

Details PROCESS FOR PREPARING PYROMELLITIC ACID PROCESS FOR PREPARING PYROMELLITIC ACID

1972-12-18

1977-04-05

Weinberger, Lorraine A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07c 6332

Patent

active

040162060

ABSTRACT:
An improvement in the process wherein durene is subjected to liquid phase oxidation with aqueous nitric acid to obtain pyromellitic acid which involves subjecting durene to pretreatment with oxygen in the presence of a cobalt compound dissolved in a lower carboxylic acid.

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