This article mainly introduces the synthesis of acid blue/Ob dyes from basic raw materials such as p-nitroaniline, H acid and aniline, discusses the influence of preparation process and reaction conditions on dye performance, and introduces its application in printing and dyeing industry.
Keywords: acid dyes; blue-black 1OB; diazotized I coupling; leather In recent years, with the increasing demand for leather products, the research and development of leather dyes has gradually developed, strong acid dyes are the earliest development Acid dyes, which can dye protein fibers and polyamide fibers such as wool and silk in acidic media, can also be used to color leather and paper foods. Strong acid dyes have a simple molecular structure and a low molecular weight. They have the advantages of simple dyeing methods, good level dyeing, and bright color. Acid blue and black lOB is a species with a large amount of production of strong acid dyes, and thus occupies an important position in dye production.
1 Experimental section
1.1 Reaction principle
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