Process of manufacturing diaryl esters of dicarboxylic acids

Details Process of manufacturing diaryl esters of dicarboxylic acids Process of manufacturing diaryl esters of dicarboxylic acids

1982-09-24

1984-11-13

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

203DIG6, 260455R, 560 11, 560 18, 560 21, 560 37, 560 52, 560 73, 560 85, 568 15, C07C 6708

Patent

active

044827326

ABSTRACT:
An improved process for preparing diaryl esters of dicarboxylic acids is disclosed, in which the esterification reaction is optimized by removing water and other by-products of the reaction according to a predetermined pattern. The removal of water and other by-products of the esterification reaction is most easily carried out by a distillation means, and the rate of removal is controlled by varying the reflux ratio in the distillation means during the course of the esterification reaction. The diaryl esters so prepared are useful in making linear polyesters.

REFERENCES:
patent: 3356712 (1967-12-01), Renckhoff et al.
patent: 3389164 (1968-06-01), Renckhoff et al.
patent: 3413336 (1968-11-01), Hulsmann et al.
patent: 3471549 (1969-10-01), Hulsmann et al.
patent: 3772389 (1973-11-01), Lowrance

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