FIELD: chemistry.
SUBSTANCE: present invention pertains to the method of obtaining polyester alcohols, used for making polyurethanes. The method involves reaction of saturated alkylene oxides with at least, one saturated OH-containing compound or with alkylene oxide, oligo- or polymerised saturated OH-containing compound. The reaction takes place in the presence of a catalyst, based on bimetallic cyanides. An antioxidant is added before the reaction. The quantity of the antioxidant is more than the quantity of the bimetallic cyanide based catalyst, in terms of the mass of the bimetallic cyanide based catalyst.
EFFECT: increased activity of the catalyst, degree of conversion of alkylene oxides and output of the process, as well as reduced the content of impurities in the end product.
6 cl, 1 tbl, 13 ex
