Method for reusing heavy end by-products in the manufacture of polychlorinated alkanes
申请人:Klausmeyer L. Rodney
公开号:US20050054887A1
公开(公告)日:2005-03-10
A method for recovering much of the carbon and chlorine value in the heavy ends and other undesired by-products formed during the production of a C
3
or higher polychlorinated alkane through the reaction of carbon tetrachloride with an olefine or chlorinated olefine, the improvement comprising the step of first separating the heavy ends and any other higher or lower boiling chlorohydrocarbon impurities from most of the desired product, and subjecting the separated heavy ends and impurities therewith to a high temperature exhaustive chlorination to produce carbon tetrachloride, tetrachloroethene, and minor amounts of hexachlorobutadiene and hexachlorobenzene by-products.
Method for the production of a halogenated alkene by catalyzed dehydrohalogenation of a halogenated alkane
申请人:Blue Cube IP LLC
公开号:US11358918B2
公开(公告)日:2022-06-14
The present invention provides methods for the preparation of halogenated alkenes from halogenated alkanes using a homogeneous catalyst.
本发明提供了使用均相催化剂从卤代烃制备卤代烯的方法。
Dehydrochlorination stabilization of polychlorinated alkanes
申请人:——
公开号:US20030018225A1
公开(公告)日:2003-01-23
A process is provided for the stabilization of polychlorinated alkanes against dehydrochlorination. The process comprises adding a phenol compound to a polychlorinated alkane such that the dehydrochlorination of the polychlorinated alkane is suppressed when heated in the presence of iron (III). In a preferred embodiment, the process comprises the prevention or reduction of dehydrochlorination of 1,1,1,3,3-pentachloropropane when heated in the presence of iron (III) contamination by the addition of monomethyl ether hydroquinone. In another embodiment, the long term storage stability of polychlorinated alkanes against dehydrochlorination is improved due to the addition of a phenol compound.