Process for producing 1,1,1,3,3-pentafluoro-propane and/or 1-chloro-3,3,3-trifluoropropene
US6403847B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2001 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 20, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/23
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
One or more materials selected from 1,1,1,3,3-pentachloropropane, 1,1,3,3-tetrachloropropene and 1,3,3,3-tetrachloropropene are used as the specific materials described above. Before submitting the materials and HF to a fluorination reaction, almost all water is removed from them.To continuously manufacture useful intended products efficiently as well as to prevent deactivation of the catalyst and the accumulation of organic substances with high boiling points when manufacturing said useful 1,1,1,3,3-pentafluoropropane and/or 1-chloro-3,3,3-trifluoropropene, by fluorinating the specific materials with HF in the presence of a catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.