Perfluoroalkylene ether-imidate and -thioimidate esters
US4053498A · kind A · utility
1Cited by
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6Claims
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Key dates
| Filing date | Jul 30, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Jul 30, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hexafluoropropylene oxide-terminated perfluoroalkylene ether-imidate and -thioimidate esters are prepared by the reaction of certain perfluoroalkylene ether dinitriles with trifluoroethanol or ethanethiol. The compounds are useful as monomers in synthesizing thermooxidatively stable, low glass transition temperature perfluoroalkylene ether bibenzoxazole polymers with improved hydrolytic stability properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.