Process for the preparation of 1,1,1-trifluoro-2,2-dichloroethane
US6590130B2 · kind B2 · utility
0Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 28, 2021 |
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 the preparation of 1,1,1-trifluoro-2,2-dichloroethane (F123).This process consists in bringing 1,1,1-trifluoro-2-chloroethane (F133a) into contact with chlorine in the presence of hydrogen fluoride and of a fluorination catalyst.The F133a can be obtained by chlorination of trichloroethylene and the F123 can subsequently be fluorinated to F125.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.