Copolymers of perfluorodioxoles
US6335408B1 · kind B1 · utility
18Cited by
8References
4Claims
0Family size
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Key dates
| Filing date | Feb 16, 1999 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Feb 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/802
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Copolymers of perfluoro-4-alkyl-1,3-dioxoles having the general formula wherein Rf is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.