Double metal cyanide catalysts for preparing polyetherpolyols

Details Double metal cyanide catalysts for preparing polyetherpolyols Double metal cyanide catalysts for preparing polyetherpolyols

C - Chemistry, Metallurgy

08

G

C08G 65/26 (2006.01) B01J 27/26 (2006.01) B01J 37/06 (2006.01) C07C 41/02 (2006.01) C07C 43/11 (2006.01)

Patent

CA 2298894

The invention is directed to new double metal cyanide (DMC) catalysts, a process for the preparation of these catalysts, and to a process for the preparation of poly-etherpolyols by the polyaddition of alkylene oxides to starter compounds which contain active hydrogen atoms, wherein the catalyst comprises the novel double metal cyanide (DMC) catalyst of the present invention. These new double metal cyanide (DMC) catalysts comprise a) one or more double metal cyanide compounds, b) one or more organic complex ligands, and c) one or more cyclodextrins, with the proviso that b) and c) are different compounds. The catalysts of this invention exhibit greatly increased activity during preparation of a polyetherpolyol.

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