Method for preparing metal cyanide catalyst/polyol initiator...

Details Method for preparing metal cyanide catalyst/polyol initiator... Method for preparing metal cyanide catalyst/polyol initiator...

B - Operations, Transporting

01

J

B01J 31/16 (2006.01) B01J 31/26 (2006.01) C08G 65/28 (2006.01)

Patent

CA 2408147

Metal cyanide catalyst dispersions in initiator compounds are prepared by precipitating the catalyst in an inert organic compound, mixing the resulting slurry with the initiator and stripping off the inert organic compound. Using this method, an active alkylene oxide polymerization catalyst is prepared, and the preparation method is greatly simplified. Further, it is not necessary to use a separate organic complexing agent in the preparation.

Cette invention concerne des dispersions de catalyseur de cyanure de métal dans des composés initiateurs que l'on prépare en précipitant le catalyseur dans un composé organique inerte, en mélangeant la suspension ainsi obtenue avec l'initiateur et en lavant le composé organique inerte. Ce procédé permet de préparer un catalyseur de polymérisation actif d'oxyde d'alkylène selon une démarche grandement simplifiée. De plus, il n'est pas nécessaire d'utiliser un agent complexant organique distinct dans la préparation.

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