Patent ID: 8026400
Filing Date: 2011-09-27
Classification: C07C

Abstract:
1. A process for production of a purified chlorinated olefin composition, the process comprising the steps of: A. providing a first composition comprising a mixture of a) a chlorinated alkene having at least one beta-chlorine substituent and no alpha-chlorine substituents and b) a chlorinated alkene having at least one alpha-chlorine substitutent; B. contacting said first composition with chlorine having a purity of at least 96% in an amount sufficient to further chlorinate said chlorinated alkene having at least one alpha-chlorine substituent but insufficient to cause conversion of more than 20% of said chlorinated alkene having at least one beta-chlorine substituent and no alpha-chlorine substituents to more highly chlorinated species, thereby producing a reaction product; and C. isolating from said reaction product a second composition which is a chlorinated olefin composition wherein i) the weight percentage of chlorinated alkenes having at least one beta-chlorine substituent and no alpha-chlorine substitutents, based on the total weight of the chlorinated alkenes present in the second composition compared to ii) the weight percentage of chlorinated alkenes having at least one beta-chlorine substituent and no alpha-chlorine substituents, based on the total weight of the chlorinated alkenes present in the first composition is increased by at least 0.25 wt. %.