Preparation of decahalodiphenyl ethane

Details Preparation of decahalodiphenyl ethane Preparation of decahalodiphenyl ethane

C - Chemistry, Metallurgy

07

C

C07C 17/12 (2006.01) C09K 21/08 (2006.01)

Patent

CA 2661809

This invention provides a process of preparing reaction-derived decahalodiphenylethane of high purity. The process comprises cofeeding separate feeds of (a) diphenylethane and (b) bromine chloride, bromine chloride and bromine, or bromine chloride and chlorine to a refluxing reaction mixture comprising bromine and at least one Lewis acid bromination catalyst so that high purity decahalodiphenylethane is formed.

Cette invention concerne un procédé de préparation de décahalogénodiphényléthane de grande pureté, dérivé d'une réaction. Le procédé comprend l'introduction simultanée d'alimentations distinctes de (a) diphényléthane et (b) chlorure de brome, chlorure de brome et brome, ou chlorure de brome et chlore dans un mélange réactionnel sous reflux comprenant du brome et au moins un catalyseur de bromuration à base d'acide de Lewis, de manière à former un décahalogénodiphényléthane de grande pureté.

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