Processes for hydrofluorination of 2-chloro-3,3,3-trifluoropropene to 2-chloro-1,1,1,2-tetrafluoropropane
US8916733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2009 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Mar 11, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/087
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for making 2-chloro-1,1,1,2-tetrafluoropropane. The process has the step of contacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of a catalyst having about 25 to about 99.9 mole percent antimony pentachloride and about 0.1 to about 75 mole percent of a metal of a Lewis acid under conditions sufficient to form the 2-chloro-1,1,1,2-tetrafluoropropane. There is a second process for making 2-chloro-1,1,1,2-tetrafluoropropane. The process has the step of hydrofluorinating about 75 to about 99.9 mole percent 2-chloro-3,3,3-trifluoropropene and about 0.1 to about 25 mole percent of one or more other hydrocarbons having at least one chlorine atom in the presence of a catalyst of fluorinated antimony pentachloride under conditions sufficient to form the 2-chloro-1,1,1,2-tetrafluoropropane. There is yet another process for hydrofluorinating 2-chloro-3,3,3-trifluoropropene to 2-chloro-1,1,1,2-tetrafluoropropane. The process has the step of contacting the 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of a vapor phase catalyst under conditions sufficient to form the 2-chloro-1,1,1,2-tetrafluoropropane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.