Hybrid perfluoroalkylene ether thioimidate ester monomers
US4108884A · kind A · utility
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Key dates
| Filing date | Jul 21, 1977 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Jul 21, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C59/315
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Perfluoroalkylene ether thioimidate esters derived primarily from tetrafluoroethylene oxide but end-capped with hexafluoropropylene oxide in the terminal positions of the perfluoroalkylene ether chain. The compounds are particularly useful as monomers to synthesize novel thermooxidatively and hydrolytically stable perfluoroalkylene ether bibenzozazole polymers having improved low temperature viscoelastic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.