Method of making 1,1,1-trifluoroethane
US7071368B1 · kind B1 · utility
5Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Feb 9, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C19/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing 1,1,1-trifluoroethane (HFC-143a) which process comprises reacting hydrogen fluoride with vinylidene chloride along with one or more of 1,1,-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) and 1,1,1-trichloroethane (HCC-140a) in the presence of pentavalent antimony as a fluorination catalyst under conditions to produce 1,1,1-trifluoroethane (HFC-143a), generally in yields of 90% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.