PRODUCTION OF CARBOXYLIC ACID DIESTER OF POLYALKYLENE ETHER GLYCOL

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a polyalkylene ether glycol carboxylic acid diester having a narrow mol.wt. distribution. SOLUTION: This method for producing a polyalkylene ether glycol carboxylic acid diester comprises polymerizing a cyclic ether in the presence of a catalyst and a carboxylic acid anhydride. Therein, the catalyst is a zeolite catalyst prepared by brining a zeolite catalyst into contact with an acid aqueous solution.