Process for purifying a polyether

Details Process for purifying a polyether Process for purifying a polyether

1995-07-17

1998-09-22

Shaver, Paul F.

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

Organic compounds

Silicon containing

568699, C07F 708

Patent

active

058115668

ABSTRACT:
A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

REFERENCES:
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patent: 4987271 (1991-01-01), Watabe et al.
patent: 5223583 (1993-06-01), Higuchi et al.
patent: 5290912 (1994-03-01), Watabe et al.
patent: 5344996 (1994-09-01), Nieh et al.
patent: 5352848 (1994-10-01), Cottrell
patent: 5519162 (1996-05-01), Agarwal et al.
patent: 5565068 (1996-10-01), Parker et al.
Database WPI, Derwent Publications, AN-91-153138, and Patent Abstracts of Japan, vol. 15, No. 263 (C-0847), JP-A-03 088 823, Apr. 15, 1991.

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