POLYETHER AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a polyether that has a specific polyoxy-alkylene chain and shows excellent lubricity and its production process. SOLUTION: This polyether has two or more different groups that are prepared by randomly adding 2 or more kinds of alkylene oxides to an active hydrogen-bearing compound and has mixed polyoxyalkylene chains comprising structures that have mutually different mixing ratios of alkylene oxide between these groups; or has a single mixed polyoxyalkylene chain of a structure that has 2 or more kinds of alkylene oxides are randomly added and their mixing ratio of these alkylene oxides changes continuously.