Purification of polyols prepared using double metal cyanide comp

Details Purification of polyols prepared using double metal cyanide comp Purification of polyols prepared using double metal cyanide comp

1987-03-20

1988-01-26

Mars, Howard T.

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

Organic compounds

Sulfur containing

568621, C07C 4134, C07C 4144, C07C 4113

Patent

active

047218185

ABSTRACT:
A method for removing double metal cyanide complex catalyst residue from polyols using alkali metal hydrides is disclosed. In one embodiment, the catalyst residue is converted into an insoluble ionic metal species and separated by filtration using magnesium or aluminum silicate to facilitate separation.

REFERENCES:
patent: 4355188 (1982-10-01), Herold

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