Synthesis of 1-chloro-1, 1-difluoroethane
US4849555A · kind A · utility
3Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jun 13, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/206
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the manufacture of 1-chloro-1,1-difluoroethane in the liquid phase by reacting hydrofluoric acid with 1,1,1-trichloroethane and/or 1,1-dichloro-1-fluoroethane. The selectively is improved by using a perfluoroalkanesulphonic acid, in particular trifluoromethanesulphonic acid, as a catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.