Title:
ECONOMICAL METHOD FOR MASS PRODUCTION OF BIS(FLUOROSULFONYL)IMIDE METAL SALT SOLUTION
Document Type and Number:
WIPO Patent Application WO/2023/106565
Kind Code:
A1
Abstract:
The present invention relates to a production method for a solution of bis(fluorosulfonyl)imide metal salts and, more specifically, to a production method for powder of bis(fluorosulfonyl)imide metal salts represented by Formula 2 by performing azeotropic distillation on an aqueous solution of bis(fluorosulfonyl)imide metal salts represented by Formula 2 prepared by reacting bis(fluorosulfonyl)imide represented by Formula 1 as a starting material with a powder-type metallized reagent. By the production method according to the present invention, no waste is generated at all by directly reacting a bis(fluorosulfonyl)imide compound with a powder-type metallized reagent without using a solvent so that, unlike the prior art, bis(fluorosulfonyl)imide metal salts can be prepared in an eco-friendly way. The production method according to the present invention is very economical since a solution of bis(fluorosulfonyl)imide metal salts can be easily mass-produced with high yields and high purity by performing rapid concentration using azeotropic distillation to remove a small amount of water within 10 weight% generated during the reaction. The production process is simple compared to a production process for powder form, and has advantages in terms of excellent storage and usability.
Inventors:
LIM KWANG MIN (KR)
Application Number:
PCT/KR2022/013107
Publication Date:
June 15, 2023
Filing Date:
September 01, 2022
Export Citation:
Assignee:
EVS TECH INC (KR)
International Classes:
C01B21/086; C01B21/093; C07C303/36; C07C303/42; C07C311/48
Foreign References:
| KR20210063797A | 2021-06-02 | |||
| JP2008172261A | 2008-07-24 | |||
| KR101718292B1 | 2017-03-21 | |||
| KR102007477B1 | 2019-08-05 | |||
| CN107215853A | 2017-09-29 |
Attorney, Agent or Firm:
TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (KR)
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