Process for preparing 1,1,1-trifluoro-2,2-dichloroethane
US7053252B2 · kind B2 · utility
28Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2002 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Jan 9, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing 1,1,1-trifluoro-2,2-dichloroethane (F123).This process consists in placing 1,1,1-trifluoro-2-chloroethane (F133a) in contact with chlorine in the presence of hydrogen fluoride and a fluorination catalyst.F133a may be obtained by fluorination of trichloroethylene, and the F123 may be subsequently fluorinated to F125.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.