Patent ID: 6683203
Filing Date: 2004-01-27
Classification: C07C

Abstract:
A process for preparing an aqueous solution of an unsaturated quaternary ammonium salt of the following formula (I): in which R represents a methyl or benzyl radical,by reaction, in the presence of water, of N,N-dimethylaminoethyl acrylate (DAMEA) with a quaternizing agent of formula (II): Râ€”Clâ€ƒâ€ƒ(II) in which R is as defined above,wherein the reaction is carried out continuously in a rotating disk agitated column, with introduction of the quaternizing agent in the column bottom and introduction of the DAMEA and the water in the column top, the reaction being carried out at a temperature of 35-60Â° C. and under a pressure of 10-20 bar.