Patent ID: 9624149
Date: 2017-04-18
CPC Classifications: C07C

Claim:
1. 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, wherein the chlorinated alkane starting material contains less than 2000 ppm chlorinated alkane impurities or chlorinated alkene impurities, and wherein the impurities have a boiling point that is equal to or greater than the boiling point of the chlorinated alkane, the chlorinated alkene, or both 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.