POLYALKYLENE GLYCOL DERIVATIVE

摘要

PROBLEM TO BE SOLVED: To obtain a polyalkylene glycol derivative greatly improved in odor both in production and long-term storage. SOLUTION: This polyalkylene glycol derivative is obtained by treating a polyalkylene glycol derivative as a raw material with a composite metal oxide of 0.1-10 wt.% in the presence of 1-50 wt.% water based on the above derivative as the raw material, wherein the above composite metal oxide is composed of magnesium oxide of 20-80 wt.% and aluminum oxide of 5-50 wt.%.