Title:
ヒドロキサム酸樹脂の製造方法およびジルコニウムの精製方法
Document Type and Number:
Japanese Patent JP7067450
Kind Code:
B2
Abstract:
To provide a method of producing hydroxamic acid resin that can inexpensively and safely produce hydroxamic acid resin by one-step reaction and to provide a method of purifying zirconium.SOLUTION: A method of producing hydroxamic acid resin includes: a reaction step of reacting a carboxyl group as an exchange group of a cation exchange resin with hydroxylamine or hydroxylamine hydrochloride in the presence of carbodiimide to form a hydroxamic acid group; and a separation step of filtering and washing a reaction liquid including the cation exchange resin having a hydroxamic acid group and a by-product derived from carbodiimide to separate and purify the cation exchange resin having a hydroxamic acid group. The solvent to be used in the reaction step is an organic solvent which dissolves carbodiimide and hydroxylamine or hydroxylamine hydrochloride and does not react with a carboxyl group.SELECTED DRAWING: None
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Inventors:
Ryota Imura
Application Number:
JP2018234472A
Publication Date:
May 16, 2022
Filing Date:
December 14, 2018
Export Citation:
Assignee:
JFE Engineering Corporation
International Classes:
B01J39/20; B01J39/07; B01J45/00; B01J47/018; B01J47/02; B01J49/06; B01J49/53; C08F8/30
Domestic Patent References:
| JP49072382A | ||||
| JP2000073043A | ||||
| JP2008214551A | ||||
| JP55040610A |
Attorney, Agent or Firm:
Sakai International Patent Office