Electrochromic salts, solutions, and devices
US7064212B2 · kind B2 · utility
3Cited by
19References
5Claims
0Family size
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Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrochromic salts. Electrochromic salts of dicationic viologens such as methyl viologen and benzyl viologen associated with anions selected from bis(trifluoromethylsulfonyl)imide, bis(perfluoroethylsulfonyl)imide, and tris(trifluoromethylsulfonyl)methide are produced by metathesis with the corresponding viologen dihalide. They are highly soluble in molten quarternary ammonium salts and together with a suitable reductant provide electrolyte solutions that are used in electrochromic windows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.