Patent · US Active

Method for preparing lithium bis(fluorosulphonyl)imide salt

US11261087B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

ARKEMA FRANCE · FR

Inventors

Philippe Leduc · Pierre-Bénite, FR
Dominique Deur-Bert · Charly, FR

Key dates

Filing date	May 21, 2019
Grant date	Mar 1, 2022
Priority date	—
Expiry date	May 21, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for preparing Cl—SO2NHSO2Cl including a step of chlorinating sulphamic acid with at least one chlorinating agent and at least one sulphur-containing agent, the method resulting in a flow F1, preferably liquid, including Cl—SO2NHSO2Cl and a gas stream F2 including HCl and SO2, the method including a step a) of treating the gas stream F2. Also, a method for preparing LiFSl including the abovementioned method for preparing Cl—SO2NHSO2Cl.

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