Preparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkysulfony) (fluorosulfonyl) imides
US5874616A · kind A · utility
62Cited by
18References
8Claims
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Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M6/166
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for preparing fluoroalkylsulfonyl imides by reacting a fluoroalkylsulfonamide with a fluoroalkylsulfonyl halide or a fluorosulfonyl halide in the presence of a non-nucleophilic base. One reaction is: EQU Z--R.sub.f --SO.sub.2 NH.sub.2 +Z--R'.sub.f --SO.sub.2 --X+2B(Z--R.sub.f --SO.sub.2)(Z--R'.sub.f --SO.sub.2)N.sup.-.BH.sup.+ +BHX, where each Z is a fluorine atom or a polymerizable organic functional group, R.sub.f and R'.sub.f are fluoroalkylene groups optionally containing catenary oxygen or nitrogen, X is a halogen atom, and B is a non-nucleophilic base. Unsymmetrical imides and polymeric imides can be prepared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.