Method for treating an imide organic solution bearing a sulphonyl group
US7781614B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method of treating an impure organic composition of ammonium imide, one of the substituents of which imide ion is a sulfonyl carried by a perhalogenated, advantageously perfluorinated carbon, characterized in that said composition is subjected to a step of liquid-liquid extraction by means of an aqueous phase and containing, as impurity, at least one of the chemical species chosen from halides, sulfonates and sulfinates, in particular those whose sulfur is carried by a perhalogenated carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.