Method for preparing metal cyanide catalysts using zero...

Details Method for preparing metal cyanide catalysts using zero... Method for preparing metal cyanide catalysts using zero...

2005-05-31

2005-05-31

Wood, Elizabeth D. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

C502S161000, C502S155000, C502S156000, C502S159000, C502S162000, C502S167000, C502S170000, C502S172000

Reexamination Certificate

active

06900156

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 necessary to use a separate organic complexing agent in the preparation.

REFERENCES:
patent: 5780584 (1998-07-01), Le-Khac et al.

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