TaF.sub.5 and NbF.sub.5 as fluorination catalysts
US4258225A · kind A · utility
30Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1977 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Aug 15, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A halogenated alkene is reacted with HF in the presence of TaF.sub.5 or NbF.sub.5 to produce a fluorinated alkane. Exemplary is the reaction of tetrachloroethene with HF in the presence of TaF.sub.5 to produce 1,2,2-trichloro-1,1-difluoroethane and 1,1,2,2-tetrachloro-1-fluoroethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.