Process for the purification of pentafluoroethane by extractive distillation
US6039845A · kind A · utility
4Cited by
3References
3Claims
0Family size
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Key dates
| Filing date | Jan 2, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Jan 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the purification of pentafluoroethane (F125) containing chloropentafluoroethane (F115). The F125-F115 mixture to be purified is subjected to an extractive distillation, the extractant being a C.sub.5 -C.sub.8 perfluoroalkyl halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.