Title:
非水溶媒の精製方法及び非水溶媒の精製用のイオン交換樹脂の前処理方法
Document Type and Number:
Japanese Patent JP7379170
Kind Code:
B2
Abstract:
A method for purifying a non-aqueous solvent includes: pretreating by passing a non-aqueous solvent for dehydration treatment through a packed bed of an ion exchange resin that is not yet subjected to dehydration treatment, to remove water in the ion exchange resin; and purifying by passing a non-aqueous solvent to be purified through the packed bed of the ion exchange resin from which water is removed during the pretreating, to purify the non-aqueous solvent to be purified, in which the harmonic-mean particle size of the ion exchange resin is 0.20 to 0.50 mm. According to the present application, a method for purifying a non-aqueous solvent can be provided, the method includes pretreating by removing water in a water-containing ion exchange resin by passing therethrough a non-aqueous solvent for dehydration treatment, in which the amount of the non-aqueous solvent for dehydration treatment used during the pretreating is small.
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Inventors:
Kei Shioya
Miwa Ito
Tomoko Takada
Iku Nukui
Miwa Ito
Tomoko Takada
Iku Nukui
Application Number:
JP2020000851A
Publication Date:
November 14, 2023
Filing Date:
January 07, 2020
Export Citation:
Assignee:
Organo Co., Ltd.
International Classes:
C07C29/76; B01J39/05; B01J39/07; B01J39/20; B01J41/05; B01J41/07; B01J41/14; B01J47/026; B01J47/04; B01J49/06; B01J49/08; B01J49/09; C07C31/10
Domestic Patent References:
| JP2013188700A | ||||
| JP2005247770A | ||||
| JP2017119234A | ||||
| JP6321816A |
Attorney, Agent or Firm:
Patent Attorney Corporation Ashitaba International Patent Office