Polyol purification process

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568618, 568619, 568621, 568678, 568680, C07C 4103

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active

045351899

ABSTRACT:
The filter cake formed by the filtering of a alkylene oxide polymer during the refining of the same contains a minor amount of alkylene oxide polymer which can be recovered therefrom by treating the filter cake with a lower aliphatic alcohol or an aqueous solution of lower aliphatic alcohol. Methanol is the preferred lower aliphatic alcohol.

REFERENCES:
patent: 3000963 (1961-09-01), Speranza et al.
patent: 3030426 (1962-04-01), Moseley et al.
patent: 3715402 (1973-02-01), Louvar et al.
patent: 4122035 (1978-10-01), Cislo
patent: 4137398 (1979-01-01), Muzzio
Kirk-Othmer, Encyclopedia of Chemical Technology 2nd ed., vol. 9, (1966) pp. 268, 274.

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