Continuous synthesis of mercaptocarboxylic acid esters

Details Continuous synthesis of mercaptocarboxylic acid esters Continuous synthesis of mercaptocarboxylic acid esters

1990-10-05

1992-03-10

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

562512, C07C31912

Patent

active

050951386

ABSTRACT:
The invention relates to production of esters of mercaptocarboxylic acids and alcohols forming an azeotrope with water.
The esterification is carried out continuously in the presence of an excess of alcohol and the water formed is removed by entraining azeotropically under vacuum at a temperature such that the residual water concentration in the reaction mixture remains constantly below 0.5% by weight.
The process according to the invention applies more particularly to the synthesis of octyl esters of thioglycolic acid.

REFERENCES:
patent: 3954843 (1976-05-01), Helmlinger et al.

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