Purification of 1,1-dichloro-1-fluoroethane
US5399796A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Nov 29, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a process for the purification of 1,1-dichloro-1-fluorethane. To remove unsaturated impurities such as 1,1-dichloroethylene and dichloracetylene the crude 1,1-dichloro-1-fluoroethane is subjected to the action of chlorine and/or of a hydracid. This treatment is carried out in the presence of a Lewis acid, or, only in the case of chlorine, by photochemical catalysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.