Methods of making 2,3,3,3-tetrafluoro-2-propene
US9890096B2 · kind B2 · utility
1Cited by
3References
6Claims
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Key dates
| Filing date | Dec 7, 2011 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/383
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the manufacture of 1234yf from 1,1,2,3-tetrachloropropene, abbreviated herein as “TCP,” in three integrated steps: wherein the vapor phase hydrofluorination of TCP in step (a) is carried out at a higher pressure than the liquid phase hydrofluorination of 1233xf; andwherein the HC1 generated during these steps is scrubbed with water to form an acid solution and the organic components are scrubbed with a caustic solution and then dried before further processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.