Process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf)
US8252964B2 · kind B2 · utility
18Cited by
4References
4Claims
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Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/389
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The subject of the invention is a process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf). More particularly, it relates to a purification process in which 2,3,3,3-tetrafluoro-1-propene, comprising impurities based on halogen compounds, is brought into contact with an adsorbent, preferably molecular sieves and advantageously molecular sieves having a pore opening with an average diameter between 5 and 11 Å, preferably between 5 and 9 Å.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.