Process for purifying polyols

Details Process for purifying polyols Process for purifying polyols

1994-10-12

1995-09-12

Lone, Werren B.

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

Organic compounds

Oxygen containing

568810, 568621, 568840, 568853, C07C 2976, C07C 2986, C07C 3118

Patent

active

054498414

ABSTRACT:
A process for reducing the level of metal ions and/or metal compounds in a polyoxyalkylene monool or polyol having a number average molecular weight of above 500-25000 by bringing the monool or polyol into contact with an extracting compound which is a polyol or a polyol mixture having a number average molecular weight of at most 500 and being immiscible with the polyoxyalkylene monool or polyol, mixing the extracting compound and the polyoxyalkylene monool or polyol, allowing the extracting compound and the polyoxyalkylene monool or polyol to separate and removing the extracting compound.

REFERENCES:
patent: 4038329 (1977-07-01), Palmer
patent: 5010047 (1991-04-01), Schuchart
patent: 5099075 (1992-03-01), Katz et al.
patent: 5144093 (1992-09-01), Reisch et al.
patent: 5248833 (1993-09-01), Hinney et al.

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