Hydroxyl-modified fluorine-containing polyether and its production

摘要: PROBLEM TO BE SOLVED: To obtain the subject polyether having distinguished properties such as water-repellency and oil-repellency narrow molecular weight distribution in a short time high yield by decomposing initiation terminal with an acid or reducing agent subsequent to termination of polymerization reaction. SOLUTION: The objective expressed formula HO-(AO)n -R [R is H, (substituted) 1-30C hydrocarbon group, etc.; A ethylene, propylene, (n) 5-2,000] produced carrying out random block copolymerization trifluoropropylene oxide III optionally ethylene and/or propylene presence metal alkoxide alcohol R OH group I II [Ra , Rb Rc are each 1-10C alkyl, (alkyl-substituted)phenyl benzyl; Rd alkyl alkoxy]} above alkali hydroxide alkoxide, stopping terminator subsequently agent.