Method for extracting impurities using ionic liquids

Details Method for extracting impurities using ionic liquids Method for extracting impurities using ionic liquids

2004-07-03

2009-10-20

Johnson, Edward M (Department: 1793)

Hazardous or toxic waste destruction or containment

Processes for making harmful chemical substances harmless,...

By reacting with chemical agents

C588S405000

Reexamination Certificate

active

07605297

ABSTRACT:
The invention relates to a process for the extractive removal of phenols, alcohols, amines, phoshines, hydroxylamines, hydrazines, oximes, imines, water, carboxylic acids, amino acids, hydroxamic acids, sulfinic acids, sulfonic acids, peroxycarboxylic acids, phosphonous acids, phosphinous acids, phosphonic acids, phosphinic acids or phosphoric acids from aprotic solvents by means of ionic liquids of the formula [K]n+[A]n−, where n, [K]+and An−are defined as in the description.

REFERENCES:
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patent: 2005/0010076 (2005-01-01), Wasserscheid et al.
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patent: WO-01/40150 (2001-06-01), None
patent: WO-02/34863 (2002-05-01), None
Huddleston, J.G. et al., Chemical Communications—Chemcom, Royal Society of Chemistry, GB, 1998, pp. 1765-1766.
Visser et al., Green Chemistry, Feb. 2000, pp. 1-4.
Bekou et al., Oxford University Press, Sep. 2003.

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