Process for the purification of saturated hydrofluorocarbons
US5801294A · kind A · utility
5Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In order to remove olefinic impurities present in a hydrofluorocarbon such as pentafluoroethane (R-125), the impure hydrofluorocarbon is treated with oxygen in the absence of catalyst or of active charcoal. The process is well suited to the purification of fluoroethanes and, more particularly, to that of pentafluoroethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.