Process for the preparation of 1.1.1.3.3-pentafluoropropane
US6930215B2 · kind B2 · utility
1Cited by
4References
16Claims
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Key dates
| Filing date | Jul 3, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Aug 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,1,1,3,3-pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and tetrachloromethane in the presence of a telomerization catalyst and of a nitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.