Process for the preparation of terephthalic acid

Details Process for the preparation of terephthalic acid Process for the preparation of terephthalic acid

1979-04-13

1981-07-14

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

C07C 51255

Patent

active

042788102

ABSTRACT:
There is disclosed a process for preparing terephthalic acid by oxidizing p-xylene which comprises contacting a substantially liquid mixture of p-xylene with p-toluic acid and water wherein the molar ratio of p-toluic acid to p-xylene is between about 0.01 and about 100 and the molar ratio of water to p-toluic acid is between about 0.4 and about 60, with a molecular oxygen-containing gas in the presence of an oxidation catalyst.

REFERENCES:
patent: 2892864 (1959-06-01), Watson
patent: 3030413 (1962-04-01), Taves
patent: 3883584 (1975-05-01), Ichikawa

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