Process for the production of an anthraquinone disperse dye
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF A 1,8-DIOXY-4,5-DINITROANTHRAQUINONE HALIDE BY REACTING BORATE OF CHRYSAZIN WITH A NITRATING AGENT IN A FUMING SULFURIC ACID MEDIUM, SUCCESSIVELY REACTING THE RESULTING MIXTURE CONTAINING BORATE OF THE NITROANTHRAQUINONE WITH A HALOGENATING AGENT AND RECOVERING A 1,8-DIOXY-4,5-DINITROANTHRAQUINONE HALIDE ACCORDING TO THE CONVENTIONAL PROCEDURE; AND A PROCESS FOR THE PRODUCTION OF A 1,8-DIOXY-4,5-DIAMINOANTHRAQUINONE HALIDE BY REACTING THE MIXTURE CONTAINING BORATE OF THE NITROANTHRAQUINONE HALIDE OBTAINED ACCORDING TO THE ABOVE-MENTIONED PROCEDURE, WITHOUT RECOVERING A 1,8-DIOXY-4,5-DINITROANTHRAQUINONE HALIDE, WITH A REDUCING AGENT IN SULFURIC ACID MEDIUM, WHEREIN THE HALIDE MEANS BROMIDE OR CHLORIDE.
Inventors
- 👤 Eiji Yamada
- 👤 Takashi Akamatsu
- 👤 Kunimasa Hamaguchi
Bibliographic Details
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