Method for producing dichloropentafluoropropanes
US5220084A · kind A · utility
1Cited by
3References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 20, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Jul 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/278
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition reaction to obtain dichloropentafluoropropane, wherein a halide containing at least one element selected from the group consisting of Sb, Nb, Ta, B, Ga, In, Zr, Hf and Ti, or AlBr.sub.3, or AlI.sub.3, is used as the Lewis acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.