Double metal cyanide complex catalyst, its production...

Details Double metal cyanide complex catalyst, its production... Double metal cyanide complex catalyst, its production...

2007-01-30

2007-01-30

Wood, Elizabeth D. (Department: 1755)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C502S159000, C502S172000, C502S175000, C568S620000, C568S607000

Reexamination Certificate

active

11211453

ABSTRACT:
Provided is a double metal cyanide complex catalyst with a high activity which is readily produced on an industrial scale. The double metal cyanide complex catalyst is of a fine particle form and contains t-butyl alcohol or, t-butyl alcohol and another organic compound as an organic ligand. The catalyst of the fine particle form has a volume-average particle size in a range of from 3 to 20 μm, based on measurement by a light scattering method for measuring fine particles having particle sizes of at least 0.15 μm. A particle content of the catalyst in a particle size range of at least 0.15 μm and at most 1 μm is less than 5% by volume, and a particle content of the catalyst over a particles size of 1 μm is in a range of more than 95% and at most 100% by volume.

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