Process for the preparation of fluorine containing hydrohalocarbons
US6187976A · kind A · utility
31Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Apr 9, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/278
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the preparation of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa), useful as an intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa). The invention further relates to a process for the preparation of HFC-245fa comprising reacting HCFC-235fa with hydrogen in the presence of a reduction catalyst wherein the said HCFC-235fa is prepared by reacting CCl.sub.3 CHCCl.sub.3 with hydrogen fluoride in the presence of fluorination catalyst in either the liquid phase or the vapor phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.