Title:
METHOD FOR PRODUCING LITHIUM DIFLUOROPHOSPHATE
Document Type and Number:
WIPO Patent Application WO/2018/135628
Kind Code:
A1
Abstract:
A method for producing lithium difluorophosphate, the method including: a step for preparing a crude product that includes lithium difluorophosphate; a step for dissolving the crude product in a mixed solvent in which are mixed at least one solvent (X) selected from the group consisting of ethyl acetate, acetone, dimethoxyethane, diethylene glycol dimethyl ether, and triethylene glycol dimethyl ether and at least one solvent (Y) selected from the group consisting of toluene, xylene, hexane, acetonitrile, dimethyl carbonate, ethyl methyl carbonate, and dimethyl carbonate in a mass ratio (solvent (X)/solvent (Y)) within the range of 70/30-95/5 to obtain a solution; and a step for removing the lithium difluorophosphate from the solution.
Inventors:
GOTOU KENICHI (JP)
SUZUKI MAKOTO (JP)
SUZUKI MAKOTO (JP)
Application Number:
PCT/JP2018/001622
Publication Date:
July 26, 2018
Filing Date:
January 19, 2018
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C01B25/455
Foreign References:
| JP2014528890A | 2014-10-30 | |||
| JP2013539448A | 2013-10-24 | |||
| JP2013534205A | 2013-09-02 | |||
| JP2016011220A | 2016-01-21 | |||
| JP2014062036A | 2014-04-10 | |||
| JP3439085B2 | 2003-08-25 | |||
| JP4604505B2 | 2011-01-05 | |||
| JP5768801B2 | 2015-08-26 | |||
| JP2015209341A | 2015-11-24 | |||
| JP2017008471A | 2017-01-12 |
Other References:
See also references of EP 3572374A4
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
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