Bimetallic-cyanide catalysts used for preparing polyether...

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

B - Operations, Transporting

01

J

B01J 27/26 (2006.01) B01J 31/02 (2006.01) C08G 18/48 (2006.01) C08G 65/10 (2006.01) C08G 65/26 (2006.01)

Patent

CA 2338657

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) complex ligands obtained by the introduction of a glycidyle ether in the catalyst. 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) des ligands complexes, obtenus par introduction d'un éther de glycidyle dans le catalyseur. Ces catalyseurs présentent une activité fortement augmentée lors de la préparation de polyol de polyéther.

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