Purification of pentafluoroethane
US5453551A · kind A · utility
11Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Feb 17, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the purification of pentafluoroethane (F125) containing chloropentafluoroethane (F15). The F-125-F115 mixture to be purified is subjected to a fluorination stage to convert F115 into hexafluoroethane (F116) which is then separated from F125, for example by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.