POLYETHERPOLYOL PRODUCTION PROCESS Russian patent published in 2007 - IPC C08G65/26 

FIELD: industrial organic synthesis.

SUBSTANCE: production of polyetherpolyols using double metal cyanide catalysts is accomplished via polyaddition of alkylene oxides to starting compounds with molecular mass from 18 to 2000 and 1-8 hydroxyl groups in presence of above catalysts. During polyaddition reaction, reaction mixture is at least once passed through jet disperser, wherein power density is at least 5x10⁵ J/m³ and residence time of reaction mixture in jet disperser is at least 10^-6 sec per pass.

EFFECT: expanded assortment of polyetherpolyols allowing production of polyurethane foams characterized by fine cellular structure and lack of pulling-down in the course of formation.

1 dwg, 12 ex