Process for preparing a chlorinated alkene
AssigneeSpolek Pro Chemickou A Hutni Vyrobu A.S.
InventorsZdenek ONDRUS, Pavel KUBICEK, Karel FILAS, Petr SLADEK
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Abstract
Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
Claims39
A process for preparing a chlorinated alkene comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.
A process for removing oxygenated impurities from a mixture comprising a chlorinated alkene, oxygenated impurities and optionally a catalyst and/or a chlorinated alkane, comprising contacting the mixture with an aqueous medium to form a biphasic mixture and extracting the organic phase from that biphasic mixture.
A chlorinated alkene composition which comprises:
- about 95% or more, about 97% or more, about 99% or more, about 99.2% or more about 99.5% or more or about 99.7% or more of the chlorinated alkene,
- less than about 50000 ppm, less than about 20000 ppm, less than about 10000 ppm, less than about 5000 ppm, less than about 2000 ppm, less than about 1000 ppm, less than about 500 ppm, less than about 200 ppm, or less than about 100 ppm of chlorinated alkane starting material,
- less than about 1000 ppm, less than about 500 ppm, less than about 200 ppm, or less than about 100 ppm of chlorinated C5-6 alkane impurities,
- less than about 1000 ppm, less than about 500 ppm, less than about 200 ppm, or less than about 100 ppm of chlorinated alkene impurities (i.e. chlorinated alkenes other than the compound of interest)
- less than about 1000 ppm, less than about 500 ppm, less than about 250 ppm, or less than about 100 ppm of oxygenated organic compounds,
- less than about 500 ppm, about 250 ppm or less, about 100 ppm or less or about 50 ppm or less of water, and/or
- less than about 500 ppm, less than about 200 ppm, less than about 100 ppm, less than about 50 ppm, less than about 20 ppm, less than about 10 ppm or less than about 5 ppm metal.
Dependencies are inferred from the claim text.