| abstract |
Improved preparation of haloalkane compounds, more particularly compounds 1,1,1,3,3-pentachloropropane (HCC-240fa), in which formation of byproducts from vinyl chloride (CH 2 = CHCl) is alleviated The method is disclosed. The present invention is also useful for the preparation of other haloalkane compounds such as HCC-250 and HCC-360. One embodiment of the invention mitigates the formation of 1,1,3,3,5,5-hexachloropentane and 1,1,1,3,5,5-hexachloropentane in a method of preparing HCC-240fa. Wherein the FeCl 3 is introduced into the reactor after the start-up phase ends and continuous operation begins. In a preferred embodiment, the "pre-chelated" FeCl 3 concentrated in the catalyst recovery column is introduced into the reactor after the continuous operation starts. |