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Production of Solvent Black 34

Because we all know that Solvent Black 34 is mainly applied in coloring plastics, printing ink and writing ink. The purpose of solvents used in paints is to reduce the coatings film forming matter is viscosity, convenience of construction, in order to get uniform protective coating.
<2-amino-4-(5)-Nitro-phenol and 2-naphthol as raw material, first of 2-amino-4-(5)-nitrophenol diazotization, coupling of 2-naphthol, subsequently joining chrome alum complex, dry original dye was obtained by filtration, drying and crushing.
Original dye powder dissolve in ethylene glycol monoethyl ether and ethanol mixed solvent, dye solution was obtained by sedimentation filter package.
TongShun Chemical Co, Ltd, set up in 2008, is a modern enterprise manufacturing solvent dyes, fluorescent pigments dyes and dyestuff intermediates. Currently, our products are exported to dozens of countries abroad.Our solvent dyes and pigments are widely used in plastic, fiber masterbatch, paint, printing ink, etc.; most of our products comply with relative EU legislation in regard to heavy metal and aromatic amine. Quality and innovation are what we guarantee to achieve customers’satisfactions.