Title:
METHOD FOR PURIFYING ORGANIC SOLVENT
Document Type and Number:
WIPO Patent Application WO/2022/091605
Kind Code:
A1
Abstract:
A method for purifying an organic solvent characterized by having an ion exchange treatment step for bringing an organic solvent to be treated into contact with an ion exchange resin and a distillation step for distilling the treated liquid of the ion exchange treatment step. According to the present invention, a method for purifying an organic solvent having an excellent ability to remove metal impurities and moisture in the organic solvent can be provided.
Inventors:
TAKADA NORIKO (JP)
Application Number:
PCT/JP2021/033511
Publication Date:
May 05, 2022
Filing Date:
September 13, 2021
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
B01J39/05; B01J41/05; B01J41/07; B01J45/00; B01J47/04; C07C41/36; C07C41/42; C07C43/13; C07B63/00; C07B63/02
Foreign References:
| JPH07208166A | 1995-08-08 | |||
| JP2005232093A | 2005-09-02 | |||
| JPS54133495A | 1979-10-17 | |||
| JP2016036038A | 2016-03-17 | |||
| JPH11171508A | 1999-06-29 |
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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