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Title:
METHOD FOR PRODUCING DISULFONYLAMINE ALKALI METAL SALT
Document Type and Number:
WIPO Patent Application WO/2014/148258
Kind Code:
A1
Abstract:
The present invention provides a method for producing a disulfonylamine alkali metal salt, which comprises the steps of: carrying out a cation exchange reaction of a disulfonylamine onium salt represented by formula [I] (wherein R1 and R2 independently represent an alkyl fluoride group having 1 to 6 carbon atoms or the like, wherein R1 and/or R2 represents a fluorine atom; and R3, R4, R5 and R6 independently represent a hydrogen atom or the like) in an organic solvent to produce a disulfonylamine alkali metal salt represented by formula [II] (wherein M+ represents an alkali metal cation; and R1 and R2 are as defined in formula [I]); and filtering the organic solvent solution containing the disulfonylamine alkali metal salt through a filter having a retentive particle size of 0.1 to 10 μm to produce a filtrate.

Inventors:
MAEKAWA HIDEKI (JP)
YASUHARA MASAMICHI (JP)
HAYASHI KEN-ICHI (JP)
Application Number:
PCT/JP2014/055622
Publication Date:
September 25, 2014
Filing Date:
March 05, 2014
Export Citation:
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Assignee:
NIPPON SODA CO (JP)
International Classes:
C01B21/086; C07C303/40; C07C311/00
Domestic Patent References:
WO2012108284A12012-08-16
WO2012117961A12012-09-07
WO2011149095A12011-12-01
WO2011065502A12011-06-03
WO2011149095A12011-12-01
WO2012108284A12012-08-16
Foreign References:
JP2003192661A2003-07-09
JP2000086617A2000-03-28
JPH08511274A1996-11-26
JP2010168249A2010-08-05
Other References:
See also references of EP 2977349A1
YOSHIHARU MATSUDA ET AL.: "Effects of Electrolyte Imide Salt Purity on Negative Electrode Charge-Discharge Characteristics in Lithium Secondary Cells", PROCEEDINGS OF THE 68TH CONFERENCE OF THE ELECTROCHEMICAL SOCIETY OF JAPAN, 25 March 2001 (2001-03-25), pages 232
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
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