Low temperature production of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd)
US6844475B1 · kind B1 · utility
65Cited by
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11Claims
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Key dates
| Filing date | Aug 8, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Aug 8, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/25
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) from 1,1,1-3,3-pentachloropropane (HCC-240fa) by its reaction with hydrogen fluoride, the reactants are reacted in a liquid phase reaction at a temperature of less than 150° C. in the presence of a Lewis acid catalyst or mixture of Lewis acid catalysts, and hydrogen chloride and HCFC-1233zd formed in the reaction are continuously removed and the HCFC-12333zd is isolated.
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