Method for oxidation of p-xylene and method for preparing dimeth

Details Method for oxidation of p-xylene and method for preparing dimeth Method for oxidation of p-xylene and method for preparing dimeth

1980-12-22

1982-08-03

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

422231, 562412, 562414, 562415, C07C 6700, C07C 6708, C07C 6739, C07C 51265

Patent

active

043428762

ABSTRACT:
A novel vertical induced circulation reactor is utilized to carry out the oxidation of p-xylene and p-methyltoluate with air in the presence of a catalyst to produce p-toluic acid and monomethylterephthalate (MMT). A novel method for preparation of dimethylterephthalate (DMT) is provided wherein the p-toluic acid and MMT formed according to the invention are esterified by conventional means in the presence of methanol to produce p-methyl toluate and dimethylterephthalate (DMT), respectively, the p-methyl toluate being recycled to the reactor as a reactant stream.

REFERENCES:
patent: 3923867 (1975-12-01), Baerns et al.
patent: 4032563 (1977-06-01), Harper et al.

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