METHOD FOR SEPARATING N-HYDROXY CYCLIC IMIDE AND CARBOXYLIC ACID

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently separating an N-hydroxy cyclic imide and a carboxylic acid contained in a solid mixture. SOLUTION: A solid mixture containing the N-hydroxy cyclic imide and carboxylic acid is mixed with water and then separated into a solid phase containing the N-hydroxy cyclic imide and a liquid phase containing the carboxylic acid.