Vapor phase process for preparing fluorinated aliphatic compounds
US5910616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1998 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Jun 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for the preparation of a fluorinated aliphatic hydrocarbon. The process utilizes a C.sub.1 to C.sub.6 hydrocarbon substituted with a halogen selected from the group consisting of chlorine, bromine and iodine as the starting material. The alkyl hydrocarbon is reacted in the vapor phase at a temperature from about 75.degree. to about 150.degree. C. with hydrogen fluoride and a catalytically effective amount of at least one antimony compound having the formula EQU Sb.sub.w.sup.u M.sub.x.sup.v X.sub.y F.sub.z.nHF where n is 0 or an integer that is at least 1; M is selected from the group consisting of a metal from Group IIIa, IIIb, IVa, IVb, Va, Vb, VIa, VIb, VIIb and VIII of the Periodic Table of the Elements; X is chloro, bromo or iodo; u is an integer that is the valence of antimony; v is an integer that is the valence of M; w, x and z are an integer of at least 1; y is 0 or an integer of at least 1; and (w.multidot.u)+(x.multidot.v)=y+z said at least one antimony compound being a nonvolatile solid at the temperature of the reaction, for a time sufficient to form said fluorinated aliphatic hydrocarbon. In order to conduct the process of the present invention, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.