Processes for the synthesis of pentafluorobutane and the separation of hydrogen fluoride and pentafluorobutane mixtures
US6540882B1 · kind B1 · utility
7Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process of separation of mixtures containing HFC-365mfc/HF azeotropic compositions by two distillations at different pressures, as well as to a process of synthesis of HFC-365mfc which integrates this process of separation and a recycling of certain fractions towards the hydrofluorination step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.