Double metal cyanide complex catalysts

Details Double metal cyanide complex catalysts Double metal cyanide complex catalysts

1995-06-07

1996-12-31

Caldarola, Glenn A.

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

Catalyst or precursor therefor

Inorganic carbon containing

502169, 528 38, 528 76, 568620, B01J 2726

Patent

active

055894313

ABSTRACT:
Improved double metal cyanide catalysts are disclosed. The substantially amorphous catalysts of the invention are more active for polymerizing epoxides than conventional DMC catalysts, which have a substantial crystalline component. Polyol products made with the catalysts are unusually clear, have exceptionally low unsaturations, and contain no detectable amount of low molecular weight polyol impurities. A method of making the improved DMC catalysts, which involves intimately combining the reactants, is also disclosed.

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