| abstract |
The present invention relates to the use of carbon dioxide (CO 2 ) and alkylene oxide in the presence of one or more H-functional starter materials using a double metal cyanide (DMC) catalyst, and sterically unhindered phenols, catechols, pyro In the presence of an additive A) selected from the group consisting of catechol, thiazine, phenothiazine, thiazole, benzothiazole, oxazine, phenoxazine, 2,2,6,6-tetramethylpiperidine 1-oxyl and nitrostyrene, and The present invention relates to a method for producing a polyether carbonate polyol by catalytic copolymerization in the presence of a metal salt B) as required. |