Process for producing 2,3,3,3-tetrafluoropropene
US9328043B2 · kind B2 · utility
4Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Feb 25, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates, in part, an improved process for the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (1234yf). In certain non-limiting embodiments, the invention relates to methods for improving process efficiency during the fluorination of 1,1,2,3-tetrachloropropene, 2,3,3,3-tetrachloropropene, and/or 1,1,1,2,3-pentachloropropane to 2-chloro-3,3,3-trifluoropropene by separating and recycling unreacted HF, unreacted starting materials, and/or certain process intermediates from the 2-chloro-3,3,3-trifluoropropene product stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.