| abstract |
(57) Abstract: A polyether having no residual salt is provided. SOLUTION: A nonionic surfactant, disodium dihydrogen pyrophosphate and water are added to an allyl group-containing polyether containing a first salt to form a second salt insoluble in the polyether. Characterized in that the metal salt of 2 is removed, Purification method of polyether. A method for producing a hydrolyzable group-containing silicon group-containing polyether, which is obtained by modifying the purified polyether. |