METHOD OF PRODUCING POLYESTER POLYOLS CONTAINING ETHER GROUPS AND ESTER GROUPS Russian patent published in 2015 - IPC C08G65/12 C08G63/08 B01J27/26 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing polyester polyols using a hybrid catalyst, comprising a double metal cyanide complex-based catalyst and a cocatalyst. Described is a method for synthesis of polyester polyols containing ether and ester groups by copolymerisation of at least one alkylene oxide with at least one cyclic compound of general formula , where X is selected from a group comprising C=O and CR¹R², where R¹ and R² each represent H and where Y is selected from a group comprising -(CR³R⁴)_m and a group, where D is and E is a bond, where m is an integer from 0 to 5 and where R³ and R⁴ are independently selected from a group comprising hydrogen, methylene and alkyl, and where r and s are each equal to 0, t is 2, and where R⁹, R¹⁰ are independently selected from a group comprising hydrogen and alkyl, in the presence of at least one initiator and at least one hybrid catalyst, where said hybrid catalyst comprises at least one double metal cyanide complex-based catalyst (DMC catalyst) and at least one cocatalyst, and said cocatalyst is selected from a group comprising titanium alkoxides, and where the DMC catalyst is present in amount of 5-2000 ppm, while the cocatalyst is present in amount of 1-1000 ppm, each relative to the total weight of the end product.

EFFECT: obtaining polyester polyols containing ether and ester groups with uniform distribution thereof on the polymer chain.

5 cl, 2 tbl, 7 ex