Perfluoropolyethers having mono- and bis-hypofluorite end groups
US4906770A · kind A · utility
21Cited by
1References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 20, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Sep 20, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/007
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mono- or difunctional perfluoropolyethers with hypofluorite end groups, and a process for preparing them which comprises reacting a perfluoropolyether having at least one fluoroformate end group, or containing a peroxy group --O--CF.sub.2 OO--CF.sub.2 --O--, with fluorine in the liquid phase at a temperature ranging from -60.degree. C. to 30.degree. C., in the presence of UV radiation of a wave-length ranging from 200 to 500 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.