Title:
POLAR ORGANIC SOLVENT PURIFICATION METHOD, POLAR ORGANIC SOLVENT PURIFICATION DEVICE, ANALYSIS METHOD AND PURIFIED POLAR ORGANIC SOLVENT PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/030380
Kind Code:
A1
Abstract:
A polar organic solvent purification method characterized by having a water addition step for adding water to a polar organic solvent, and a purification step for obtaining a purified polar organic solvent by contacting the polar organic solvent, to which water has been added, to an ion exchanger. The present invention makes it possible to provide a polar organic solvent purification method which is excellent at removing ionic impurities from the polar organic solvent, and makes it possible to provide a polar organic solvent purification method which exhibits high purification efficiency and is excellent at removing ionic impurities from the polar organic solvent.
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Inventors:
TAKADA NORIKO (JP)
SUGAWARA HIROSHI (JP)
SUGAWARA HIROSHI (JP)
Application Number:
PCT/JP2021/028311
Publication Date:
February 10, 2022
Filing Date:
July 30, 2021
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
C07C29/76; C07B63/00; C07C31/10; C07C41/36; C07C43/13; C07C67/56; C07C69/14
Foreign References:
| JP2013023440A | 2013-02-04 | |||
| JP2013023441A | 2013-02-04 | |||
| JP2014055120A | 2014-03-27 | |||
| JP2017132700A | 2017-08-03 | |||
| JP2017131810A | 2017-08-03 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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