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AssigneeSpolek Pro Chemickou A Hutni Vyrobu A.S.
InventorsZdenek Ondrus, Pavel Kubicek, Petr Sladek
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A process for producing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material:C3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.
A process for selectively producing 1,1,3,3-tetrachloropropene, the process comprising providing a mixture comprising a plurality of at least two C3 chlorinated alkane isomers comprising 1,1,1,2,3-pentachloropropane and 1,1,1,3,3-pentachloropropane, subjecting the mixture to a selective dehydrochlorination step in a dehydrochlorination zone in which a first C3 chlorinated alkane isomer of the plurality of the at least two C3 chlorinated alkane isomers comprising 1,1,1,2,3-pentachloropropane and 1,1,1,3,3-pentachloropropane is selectively converted to 1,1,3,3-tetrachloropropene without the dehydrochlorination of any of the other of the plurality of the at least two C3 chlorinated alkane isomers comprising 1,1,1,2,3-pentachloropropane and 1,1,1,3,3-pentachloropropane, wherein dehydrochlorination is conducted in a liquid phase and an operating temperature of the dehydrochlorination zone is optionally from about 50° C. to about 150° C., and adding a metal-containing catalyst to the mixture in the selective dehydrochlorination step;
A process for selectively producing 1,1,3,3-tetrachloropropene, the process comprising providing a mixture comprising a plurality of C3 chlorinated alkane isomers consisting of 1,1,1,2,3-pentachloropropane and 1,1,1,3,3-pentachloropropane, subjecting the mixture to a selective dehydrochlorination step in a dehydrochlorination zone in which a first C3 chlorinated alkane isomer of the plurality of the C3 chlorinated alkane isomers consisting of 1,1,1,2,3-pentachloropropane or 1,1,1,3,3-pentachloropropane is selectively converted to 1,1,3,3-tetrachloropropene without the dehydrochlorination of a second C3 chlorinated alkene of the plurality of the C3 chlorinated alkane isomers consisting of 1,1,1,2,3-pentachloropropane or 1,1,1,3,3-pentachloropropane, wherein dehydrochlorination is conducted in a liquid phase and an operating temperature of the dehydrochlorination zone is optionally from about 50° C. to about 150° C., and adding a metal-containing catalyst to the mixture in the selective dehydrochlorination step;
Dependencies are inferred from the claim text.