Supported double metal cyanide catalysts, method for producing them, and their use for producing polyether alcohols

Geträgerte doppelmetallcyanidkatalysatoren, verfahren zu ihrer herstellung sowie ihre verwendung zur herstellung von polyetheralkoholen

Catalyseurs de cyanure metallique double sur supports, leur procede de production et leur utilisation pour la production de polyetheralcools

Abstract

Die Erfindung betrifft Doppelmetallcyanidkatalysatoren, wobei die Doppelmetallcyanide (DMC) auf feste, inerte, ungeschäumte Träger aufgebracht sind, oder in diese eingebracht sind oder zu Formkörpern geformt sind, ihre Herstellung sowie ihre Verwendung zur Herstellung von Polyetheralkoholen mit einem niedrigen Gehalt an ungesättigten Verbindungen durch katalytische ringöffnende Polymerisation von Alkylenoxiden. Das DMC ist beispielsweise Zinkhexacyanocobaltat.
The invention relates to double metal cyanide catalysts (DMC) which are applied to solid, inert non-foamed supports, introduced into the same or shaped into forms. The invention also relates to the production of said double metal cyanide catalysts and to their use for producing polyether alcohols with a low unsaturated compound content by means of catalytic ring-opening polymerisation of alkylene oxides. The DMC can be e.g., zinc hexacyanocobaltate.
L'invention concerne des catalyseurs de cyanure métallique double. Le cyanure métallique double (DMC) est appliqué sur des supports solides, inertes et non alvéolaires ou bien inséré dans ces supports ou encore façonné en corps moulés. L'invention concerne également leur production et leur utilisation dans la production de polyétheralcools à faible teneur en composés insaturés par polymérisation d'oxydes alcylène cassant les composés cycliques et catalytiques. Le DMC est, par exemple, un hexacyanocobalte de zinc.

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