PROCESS FOR PRODUCING QUATERNARY SALT OF DIALKYLAMINOALKYL (METH)ACRYLATE

摘要

A process for continuously producing a quaternary salt of a dialkylaminoalkyl (meth)acrylate by reacting a dialkylaminoalkyl (meth)acrylate with a gaseous quaternizing agent in an aqueous solution of a quaternary salt of a dialkylaminoalkyl (meth)acrylate. The process attains an improvement in the efficiency of the reaction of the gaseous quaternizing agent and inhibits acrylic acid from generating as a by-product. A dialkylaminoalkyl (meth)acrylate, a gaseous quaternizing agent, and water are fed to an aqueous solution of a quaternary salt of a dialkylaminoalkyl (meth)acrylate held in a reactor (11) to thereby react the dialkylaminoalkyl (meth)acrylate with the quaternizing agent. In this operation, the quaternizing agent is continuously supplied in the form of bubbles (2) having an average diameter of 100 µm or smaller.