Method for purifying N-vinylcarboxylic acid amide

Abstract

The objective of this invention is to provide a purification method for producing highly polymerizable N-vinylcarboxylate amines even by omitting the hydrogenation step and using a general purification procedure. The solution of this invention is a method for producing purified N-vinylcarboxylate amines, characterized in that the method for producing purified N-vinylcarboxylate amines from crude N-vinylcarboxylate amines includes a distillation step and a crystallization step.