DOUBLE METAL-CYANIDE CATALYST AND METHOD OF OBTAINING IT Russian patent published in 2008 - IPC B01J27/26 B01J23/80 C08G65/10 

FIELD: chemistry.

SUBSTANCE: proposed method involves interaction of, (i) at least one water soluble metallic salt, (ii) at least one water soluble metal-cyanide salt, (iii) at least one organic complexing ligand, (iv) at least one water soluble alkaline metallic salt and, not necessarily, (v) at least one functionalised polymer in conditions of precipitation, enough for the formation of a catalyst and addition of at least one water soluble alkaline metallic salt in an amount which will ensure its amount in the specified catalyst is roughly from 0.4 to 6% of the total mass of the double meta-cyanide catalyst. Also declared is the double metal-cyanide catalyst obtained using the specified method.

EFFECT: acceptable catalyst activity and the possibility of using it for obtaining polyols with the reduction in the levels of high-molecular tail fractions.

14 cl, 16 ex, 7 tbl