Improved double metal cyanide complex catalysts

European Patent Office Patent

PATENT NO 0654302
APP PUB NO EP-0654302-A1
SERIAL NO

94308612

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
BAYER ANTWERPEN N VBE2040 ANTWERPEN

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Inventor(s)

Inventor Name Address
LE-KHAC BI WEST CHESTER PA 19382

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