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US 6,586,564 B2Granted
Double-metal cyanide catalysts for preparing polyether polyols
AssigneeBayer Aktiengesellschaft
InventorsWalter Schäfer, Jörg Hofmann, Pieter Ooms
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Abstract
The invention relates to double-metal cyanide (DMC) catalysts for preparing polyether polyols by the polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, wherein the DMC catalysts are composed of: a) at least one DMC compound; b) at least one organic complexing ligand which is not a coronand; and c) at least one coronand. The DMC catalysts of the present invention have increased activity compared to known catalysts.
Claims9
A double-metal cyanide catalyst comprising:
- a) at least one double-metal cyanide compound;
- b) at least one organic complexing ligand which is not a coronand;
- and
- c) at least one coronand.
1 more element
Dependencies are inferred from the claim text.