Process for concentrating halogenoanthraquinones

Details Process for concentrating halogenoanthraquinones Process for concentrating halogenoanthraquinones

B - Operations, Transporting

01

D

202/101

B01D 3/10 (2006.01) B01D 3/14 (2006.01)

Patent

CA 1068234

Process for concentrating halogenanthraquinones Abstract of the Disclosure The present invention relates to a process for concentrat- ing halogenanthraquinones, preferably chloroanthraquinones, and binary mixtures of di- or tri-halogenanthraquinones by fractional vacuum destillation, which may be multi-stage. Halogenanthraquinones are industrially important starting materials for the synthesis of valuable dye stuffs.

241187

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