Double-metal cyanide catalysts for producing polyether polyols

Details Double-metal cyanide catalysts for producing polyether polyols Double-metal cyanide catalysts for producing polyether polyols

B - Operations, Transporting

01

J

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

Patent

CA 2343818

The invention relates to novel bimetallic cyanide catalysts for producing polyether polyols by polyaddition of alkylene oxides to starter compounds with active hydrogen atoms. The catalyst contains a) bimetallic cyanide compounds, b) organic complex ligands which are different from c), and c) carboxylic acid esters of polyvalent alcohols. The degree of activity of the inventive catalysts in the production of polyether polyols is increased considerably.

L'invention concerne de nouveaux catalyseurs à base de cyanure bimétallique pour la préparation de polyols de polyéther par polyaddition d'oxydes d'alkylène sur des composés initiateurs présentant des atomes d'hydrogène actifs, lesdits catalyseurs contenant a) des composés de cyanure bimétallique; b) des ligands de complexe organiques différents de c); et c) des esters d'acide carboxylique d'alcools polyvalents. Ces catalyseurs présentent, lors de la préparation de polyols de polyéther, une activité fortement augmentée.

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