Bimetallic-cyanide catalysts used for preparing polyether...

Details Bimetallic-cyanide catalysts used for preparing polyether... Bimetallic-cyanide catalysts used for preparing polyether...

C - Chemistry, Metallurgy

08

G

C08G 65/26 (2006.01) B01J 27/26 (2006.01) B01J 37/06 (2006.01)

Patent

CA 2338698

The present invention relates to new bimetallic-cyanide catalysts which are used for producing polyether polyols by the poly-addition of alkylene oxides to starter compounds comprising hydrogen atoms. This catalyst contains a) compounds of the bimetallic-cyanide type, b) organic complex ligands different from c), and c) glycoside. These catalysts exhibit a substantially increased activity during the preparation of polyether polyol.

L'invention concerne de nouveaux catalyseurs de cyanure bimétallique utilisés pour préparer des polyols de polyéther par poly-addition d'oxydes d'alkylène à des composés initiateurs comportant des atomes d'hydrogène. Le catalyseur contient a) des composés de type cyanure bimétallique, b) des ligands complexes organiques différents de c) et c) du glycoside. Ces catalyseurs présentent une activité fortement augmentée lors de la préparation de polyol de polyéther.

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