METHOD OF MAKING ARYL HYDROCARBOXYLIC ACIDS Russian patent published in 2009 - IPC C07C51/02 C07C59/70 

Abstract RU 2345978 C2

FIELD: chemistry.

SUBSTANCE: present invention pertains to perfection of the method of making aryl hydrocarboxylic acids, which are widely used as herbicides. The method involves a stage of obtaining alkali phenolate from reaction of the respective phenol with a hydroxide of an alkali metal, a stage of obtaining salts of monochloroacetic acid from reaction of salts of monochloroacetic acid with the obtained alkali phenolates, with heating and subsequent acidification and separation of aryl hydrocarboxylic acids. The process of obtaining alkali phenolates and salts of monochloroacetic acid is carried out in a solid phase with fine grinding and intense mixing at the same time.

EFFECT: increased output and quality of the end product, as well as simplification of the technology.

6 cl, 7 ex

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RU 2 345 978 C2

Authors

Valitov Rail' Bakirovich

Sapozhnikov Jurij Evgen'Evich

Kolbin Aleksandr Mikhajlovich

Badikov Jurij Vladimirovich

Voronenko Boris Ivanovich

Maslennikova Valentina Vasil'Evna

Buslaeva Ljudmila Ivanovna

Dates

2009-02-10Published

2006-12-11Filed