METHOD FOR PREPARING METAL CYANIDE CATALYSTS USING ZERO VALENT METALS

Title:

METHOD FOR PREPARING METAL CYANIDE CATALYSTS USING ZERO VALENT METALS

Document Type and Number:

WIPO Patent Application WO2003080240

Kind Code:

A3

Abstract:

Metal cyanide catalyst dispersions in initiator compounds and/or polyether are prepared by reacting an acidic metal cyanide compound a zero valent metal in a medium that is a solvent for the acidic metal cyanide compound. The resulting catalyst slurry may be combined with an initiator and/or polyether and stripped to form a catalyst/initiator or catalyst/polyether slurry. 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.

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Inventors:

WEHMEYER RICHARD M (US)

Application Number:

PCT/US2003/008406

Publication Date:

December 11, 2003

Filing Date:

March 18, 2003

Export Citation:

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Assignee:

DOW GLOBAL TECHNOLOGIES INC (US)
WEHMEYER RICHARD M (US)

International Classes:

B01J23/80; B01J27/26; B01J31/00; C08G65/10; B01J31/02; B01J31/06; B01J37/03; C08G65/26; (IPC1-7): B01J27/26; C08G65/26; B01J37/16

Domestic Patent References:

WO2001090216A1

2001-11-29

Foreign References:

DE19809538A1	1999-09-09
US5780584A	1998-07-14

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