Method for removing quaternary salt
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United States of America Patent
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Oct 18, 2016
Grant Date -
Jan 29, 2015
app pub date -
Jan 28, 2013
filing date -
Feb 14, 2012
priority date (Note) -
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Abstract
The purpose of the present invention is to provide a method for efficiently removing a quaternary salt from an organic solvent. The present invention relates to a method for removing a quaternary salt, the method including: contacting a solution of a quaternary salt in an organic solvent with an aqueous solution containing at least one member selected from the group consisting of (a1) compounds having one or more anionic functional groups and (a2) polymers having at least one member selected from the group consisting of carboxyl group and sulfonic acid group, thereby removing the quaternary salt from the organic solvent.
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