C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 65/10 (2006.01) B01J 27/26 (2006.01) C08G 18/48 (2006.01) C08G 65/26 (2006.01) C08G 65/30 (2006.01)
Patent
CA 2381188
The invention relates to a method for preparing polyetherpolyols by means of a double metal cyanide (DMC)-catalysis, through which the induction phase is dramatically shortened. Through a continuously metered supply of an alkylene oxide to the starter-catalyst mixture, the induction phase can be dramatically shortened in comparison to a continuous activation.
Procédé de préparation de polyétherpolyols à l'aide de la catalyse au cyanure bimétallique, grâce auquel la phase d'induction est considérablement raccourcie. L'ajout dosé en continu d'un oxyde d'alkylène au mélange catalyseur de départ permet d'obtenir un raccourcissement considérable de la phase d'induction, par rapport à l'activation discontinue.
Dietrich Manfred
Ehlers Stephan
Gupta Pramod
Hofmann Jorg
Steinlein Christian
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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