Process for preparing 1,1,1-trifluoro-2, 2-dichloroethane
US7176338B2 · kind B2 · utility
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9References
3Claims
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Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Jul 27, 2025 |
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.