Heterocycle grafted monomers and related polymers and hybrid inorganic-organic polymer membranes
US7576165B2 · kind B2 · utility
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28References
5Claims
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Key dates
| Filing date | Jan 26, 2005 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Sep 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Polymers, polymer precursors, and other materials are described, having at least one heterocycle and being useful for fabrication of proton-exchange membranes (PEMs). In representative examples, the heterocycle is a fluorinated imidazole ring. The heterocycle can be chosen to have a low value of pKa, and may be a triazole ring, other nitrogen-containing heterocycle, or derivative thereof. Polymers and composites were prepared having excellent proton conductivity. Applications of these materials include fuel cells and other ion-conducting applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.