Method for removing quaternary salt
AssigneeArakawa Chemical Industries, Ltd.
InventorsKiyoshi Takumi, Naoki Sasagawa, Yoichiro Ezaki
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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.
Claims7
A method for removing a quaternary salt, the method comprising
- 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.
Dependencies are inferred from the claim text.