Patent · US Active

Method for producing lithium or sodium bis(fluorosulfonyl)imide

US9440852B2 · kind B2 · utility

2Cited by

5References

9Claims

0Family size

Assignee

ARKEMA FRANCE · FR

Inventor

Grégory Schmidt · Pierre-Bénite, FR

Key dates

Filing date	Apr 6, 2012
Grant date	Sep 13, 2016
Priority date	—
Expiry date	Nov 25, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49108
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a process for the preparation of a bis(sulphonato)imide salt of formula:(III) (SO3−)—N−—(SO3)3C+ (III)where C+ represents a monovalent cation, comprising the reaction of amidosulphuric acid of formula:(OH)—SO2—NH2 (I)with a halosulphonic acid of formula:(OH)—SO2—X (II)where X represents a halogen atom, and comprising a reaction with a base which is a salt formed with the cation C+.The invention also relates to a process for the preparation of bis(fluorosulphonyl)imide acid of formula:F—(SO2)—NH—(SO2)—F (V)and to a process for the preparation of lithium bis(fluorosulphonyl)imide salt of formula:F—(SO2)—N−—(SO2)—F Li+. (VII)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.