Abstract: The invention is directed to a double-metal cyanide catalyst for the preparation of a polyether polyol by the polyaddition of an alkylene oxideon to a starter compound containing active hydrogen atoms, wherein the DMC catalyst comprises a) at least one double-metal cyanide compound; b) at least one organic complexing ligand; and c) two different complexing components.
Type:
Grant
Filed:
May 3, 2002
Date of Patent:
October 11, 2005
Assignee:
Bayer Aktiengesellschaft
Inventors:
Pieter Ooms, Jörg Hofmann, Walter Schäfer