Patent · US Active

Purification of bis(fluorosulfonyl) imide

US11267707B2 · kind B2 · utility

0Cited by

30References

20Claims

0Family size

Assignee

HONEYWELL INTERNATIONAL INC. · US

Inventors

Matthew H. Luly · Hamburg, US
Bernard E. Pointner · Buffalo, US

Key dates

Filing date	Apr 7, 2020
Grant date	Mar 8, 2022
Priority date	—
Expiry date	Jul 3, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B21/086
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of producing purified bis(fluorosulfonyl) imide includes providing a liquid mixture including bis(fluorosulfonyl) imide and fluorosulfonic acid and then contacting the liquid mixture with gaseous ammonia. The gaseous ammonia reacts with the fluorosulfonic acid to produce ammonium fluorosulfate. The method further includes separating the liquid mixture from the ammonium fluorosulfate.

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