Method of producing 1,1,1,2,3,3,-hexafluoropropane and tetrafluorochloropropene
US5532418A · kind A · utility
5Cited by
2References
4Claims
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Key dates
| Filing date | Mar 1, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/23
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing 1,1,1,2,3,3-hexafluoropropane in a characteristic process in which tetrafluorochloropropene is first obtained from the dechlorofluorination (removing ClF) of 1,1,1,2,2-pentafluoro-3,3-dichloropropane and/or 1,1,2,2,3-pentafluoro-1,3-dichloropropane by hydrogen in the presence of a metal oxide catalyst and then the product olefin is fluorinated in the presence of a catalyst. By this method, 1,1,1,2,3,3-hexafluoropropane, which is useful as an action fluid and so on and has a property to help preserving the environment, and an intermediate in its synthesis can be easily produced at low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.