Cation exchange treating method for aqueous solution of acrylamide

Abstract

Abstract PURPOSE: To purify an aqueous solution of the titled compound useful for an agent for paper making, by adjusting the content of 2-cyanoethyl acrylate in an aqueous solution of acrylamide obtained by hydrating acrylonitrile in the presence of a copper catalyst. CONSTITUTION: Acrylonitrile is hydrated in the presence of a copper catalyst, e.g. a combination of copper in the form of a copper wire and copper powder with copper ions, reduced copper or electrolytic copper or Raney nickel, at a weight ratio between the acrylonitirle and the water of preferably 60:40W5:95 to give an aqueous solution of acrylamide. The content of 2-cyanoethyl acrylate in the aqueous solution is previously adjusted to 20ppm or less based on the acrylamide, and the aqueous solution of the acrylamide is then treated with a cation exchage resin to purify the aqueous solution of the acrylamide. The reaction temperature is preferably 70W 150°C. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Shiro Asano
• 👤 Junji Mikami
• 👤 Jun Saito
• 👤 Tadatoshi Honda

Bibliographic Details