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1. (WO2001090217) METHOD FOR PREPARING METAL CYANIDE CATALYSTS AND FOR USING SAME

Pub. No.:    WO/2001/090217    International Application No.:    PCT/US2000/018623
Publication Date: Nov 29, 2001 International Filing Date: Jul 7, 2000
IPC: B01J 27/26
C08G 65/10
C08G 65/26
Applicants: THE DOW CHEMICAL COMPANY
Inventors: CLEMENT, Katherine, S.
WALKER, Louis, L.
MOLZAHN, David, C.
Title: METHOD FOR PREPARING METAL CYANIDE CATALYSTS AND FOR USING SAME
Abstract:
Metal cyanide catalyst dispersions in initiator compounds are prepared by precipitating the catalyst in an aqueous phase, mixing the resulting slurry with the initiator and stripping off the water and other volatiles. Using this method, an active alkylene oxide polymerization catalyst is prepared, and the preparation method is greatly simplified. Further, it is not necessary to use a separate organic complexing agent in the preparation.