Process for the production of an aromatic dicarboxylic acid

Details Process for the production of an aromatic dicarboxylic acid Process for the production of an aromatic dicarboxylic acid

1980-06-20

1982-02-02

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

562487, 562494, 562412, 562417, C07C 5156, C07C 5142

Patent

active

043140734

ABSTRACT:
A substituted aromatic compound e.g. p-xylene is oxidized to an aromatic dicarboxylic acid e.g. terephthalic acid using a Co/Mn/Br catalyst in acetic acid and the slurry product is purified by treating with molecular oxygen and diluting with fresh acetic acid before separation of the terephthalic acid and mother liquor.

REFERENCES:
patent: 3617033 (1971-11-01), Ichikawa et al.
patent: 3859344 (1975-01-01), Shigeyasu et al.

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