Stable 2,3,3,3-tetrafluoropropene composition
US10662357B2 · kind B2 · utility
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46References
13Claims
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Key dates
| Filing date | Jul 13, 2018 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jul 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A stable composition (CS) including at least x wt.-% 2,3,3,3-tetrafluoropropene (99.8 ÿ x<100), at most y wt.-% unsaturated compound(s) (Ia) (0<y ÿ 0.2) selected from among 3,3,3-trifluoropropene (HFO-1243zf) and the positional isomers of 2,3,3,3-tetrafluoropropene, such as 1,3,3,3-tetrafluoropropene (isomers Z and E) and 1,1,2,3-tetrafluoropropene, and, optionally, at most 500 ppm of 3,3,3-trifluoropropyne and/or at most 200 ppm 1,1,1,2,3-pentafluoropropene (HFO-1225ye).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.