NEW METHOD OF PURIFYING SULFONIMIDE SALT

Japanese Patent JP2010083764

A

To provide a new method of purifying a sulfonimide salt, which is a useful substance as an electrolyte for an electricity storage device such as a secondary lithium ion battery.

The purification method is a method of separating and purifying a sulfonimide salt from a mixture of a sulfonate represented by formula (1): Rf1SO3M {in the formula, Rf1 represents a 1-12C fluorinated hydrocarbon group, and M represents an alkali metal} and a sulfonimide salt represented by formula (2): Rf1SO2N(M)SO2Rf2 {in the formula, Rf2 is the same as Rf1 in formula (1)} and includes, (A) a step of feeding the mixture into a two-phase solvent constituted of at least one species of hydrophobic organic solvents and an aqueous solution comprising an alkali metal carbonate or an alkaline earth metal carbonate as an additive and agitating them to extract the sulfonimide salt into the hydrophobic organic solvent phase and, (B) a step of isolating and collecting the hydrophobic organic solvent phase alone from the two-phase solvent.

JPH01228947	SEPARATION OF AMINO ACID
JPH0753503	METHOD FOR PURIFYING ALKALI METALLIC AMINOETHANESULFONATES OR ALKYL-N-SUBSTITUTED AMINOETHANESULFONATES
JP2005533094	Separation method of R (-)-and S (+)-5- [2-[[2- (2-ethoxyphenoxy) ethyl] amino] propyl] -2-methoxybenzenesulfonamide

YONEDA HISANARI
OSADA KAZUTO

JP2008251281A

April 15, 2010

September 29, 2008

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ASAHI KASEI CORP

C07C303/44; C07C311/03; C07F1/02; C07F1/06

JP2005517735A	2005-06-16
JP2006324554A	2006-11-30
JP2001525844A	2001-12-11
JP2000302748A	2000-10-31
JP2004213991A	2004-07-29
JP2004051546A	2004-02-19
JP2008222658A	2008-09-25
JP2009263259A	2009-11-12

Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Kazuhiro Nakamura
Hiroyuki Onoda
Toko Saito

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