Title:
METHOD FOR PURIFYING HYDROLYZABLE ORGANIC SOLVENT, AND METHOD FOR PRODUCING RESIN FOR PURIFYING HYDROLYZABLE ORGANIC SOLVENT
Document Type and Number:
WIPO Patent Application WO/2022/209392
Kind Code:
A1
Abstract:
Provided is a method for purifying a hydrolyzable organic solvent, the method making it possible to reduce the metal impurity concentration in the hydrolyzable organic solvent while suppressing the generation of acids. There is used a method for purifying a hydrolyzable organic solvent, the method being characterized by having a purification step for bringing a hydrolyzable organic solvent into contact with a cation exchange resin with which a chelate resin is mixed in a discretionary manner and purifying the hydrolyzable organic solvent, and moreover being characterized in that the volumetric ratio of the cation exchange resin relative to the total amount of the cation exchange resin and the discretionary chelate resin is 10-100%.
Inventors:
NUKUI KAORU (JP)
TAKADA NORIKO (JP)
YAMASHITA YUKINARI (JP)
TAKADA NORIKO (JP)
YAMASHITA YUKINARI (JP)
Application Number:
PCT/JP2022/006402
Publication Date:
October 06, 2022
Filing Date:
February 17, 2022
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
B01J45/00; B01J39/05; B01J39/07; B01J39/19; B01J41/05; B01J41/07; B01J47/04
Foreign References:
| JP2004181351A | 2004-07-02 | |||
| JP2007117781A | 2007-05-17 | |||
| JPH075683A | 1995-01-10 | |||
| JP2013000725A | 2013-01-07 | |||
| US20030150814A1 | 2003-08-14 |
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
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