METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS

摘要

The invention relates to a method for producing polyether carbonate polyols by catalytically copolymerizing carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances using double metal cyanide (DMC) catalysts and in the presence of additives A) selected from the group consisting of sterically unhindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6,-tetramethylpiperidin-1-oxyl and nitrostyrolene and optionally in the presence of metal salts B).