METHOD TO REDUCE THE FORMATION OF HIGH BOILING COMPOUNDS DURING THE DEHYDROCHLORINATION OF 1 1 1 3 TETRACHLOROPROPANE

摘要

This invention relates to a method to improve 1,1,3-trichloropropene (HCC-1240za) and/or 3,3,3-trichloropropene (HCC-1240zf) selectivity in the dehydro-chlorination of 1,1,1,3-tetrachloropropane (HCC-250fb). In normal practice, FeCl is used as the catalyst for the dehydrochlorination of HCC-250fb to produce 1,1,3-trichloro-propene and/or 3,3,3-trichloropropene. Here the improvement comprises, using as the starting material, a mixture comprising HCC-250fb and Heavies generated from the reaction of CC and ethylene to produce HCC-250fb, wherein the Heavies comprise one or more tetrachloropentane isomers. These compounds reduce or eliminate the formation of unwanted high boiling compounds (HBCs).