Process for producing 2-chloro-3,3,3-trifluoropropene and 2,3,3,3-tetrafluoropropene
US9540295B2 · kind B2 · utility
0Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2012 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Sep 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates, in part, to the discovery that high temperatures during the fluorination of 1,1,2,3-tetrachloropropene (HCO-1230xa) to 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) results in catalyst instability, reduced selectivity of the conversion, and/or the formation of one or more undesirable by-products. By controlling the reaction temperature, it is shown that the catalyst life may be extended and the selectivity of the reaction improved. Such control similarly results in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.