Long chain-perfluoroalkylene ether bibenzoxazole polymers
US3994861A · kind A · utility
3Cited by
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6Claims
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Assignee
Inventor
Key dates
| Filing date | Sep 4, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Sep 4, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Long chain-perfluoroalkylene ether bibenzoxazole polymers are synthesized by the polycondensation of long chain-perfluoroalkylene ether bis(o-aminophenol) compounds and perfluoroalkylene ether diimidate esters. The elastomeric polymers have a combination of high thermooxidative stability and superior low temperature visco-elastic properties that render them particularly useful for wide temperature range applications, such as seals, sealants and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.