Process for the preparation of dimethyl terephthalate

Details Process for the preparation of dimethyl terephthalate Process for the preparation of dimethyl terephthalate

1984-07-12

1989-04-11

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

502171, 502324, 502326, 560 99, 562412, 562414, C07C 6739, C07C 6708

Patent

active

048208620

ABSTRACT:
The yield of dimethyl terephthalate obtained by the oxidation of a mixture of p-xylene and methyl p-toluate, preferably with air, and esterification of the thus-produced acids is increased by utilizing a mixture of cobalt and manganese compounds as the oxidation catalyst.

REFERENCES:
patent: 2245528 (1941-06-01), Loder
patent: 2723994 (1958-11-01), Harfele et al.
patent: 2833816 (1958-05-01), Saffer et al.
patent: 2880237 (1959-03-01), Knoblach
patent: 2894978 (1959-07-01), Katzschmann
patent: 4346230 (1982-08-01), Hoffmann et al.

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