PRODUCTION OF A-UCHLORACRYLICACID

摘要

Production of alpha -chloroacrylic acid. Acrylic acid and chlorine gas are intimately contacted with one another and the resulting crude reaction product, which predominantly consists of 2,3-dichloropropionic acid, is separated into alpha -chloroacrylic acid and hydrogen chloride. To this end, the reaction produce is introduced into a catalyst zone heated to 80 DEG - 160 DEG C and containing one or more known dehydrochlorination catalysts, wherein alpha -chloroacrylic acid is continuously distilled off under pressures between 10 and 100 mm of mercury.