Production of polyether poly:ol(s) with removal of basic catalyst

摘要

A process for production of polyether polyols (A), involves reacting polyols with epoxides in the presence of a basic catalyst containing (A) with OH functionality, and mixing with an insoluble compound (B) of a group III-VIII element, having BET surface area of 10-1000 m<2>/g. The solid, inorganic compound (B) loaded with basic catalyst is isolated from (A) and used in the reaction of polyols with epoxides; or the polyol reactant is brought into contact with (B) followed by separation of (B), and the polyol is supplied to react with the epoxides.