Commonly Used Benzimidazolone Organic Pigments
Pigment red 57:1 manufacturer said, benzimidazolone pigment is a kind of high-grade organic pigment, which is named by the amino benzimidazolone group contained in the molecule, it is a kind of high-performance pigment with acylimine group, different from the general azo pigment, due to the benzimidazolone pigment molecule containing cyclic acylamino benzimidazolone through the formation of hydrogen bond with the neighboring molecules, which changes the molecule aggregation state and makes the pigment have a higher melting point, which can significantly reduce the solubility in solvent, so that it has excellent light resistance, weather fastness, solvent resistance, and excellent light resistance, and it can also reduce the solvent resistance. The pigment has a higher melting point, which can significantly reduce the solubility in solvents, giving it excellent light resistance, weather fastness, solvent resistance, migration resistance and heat stability.
Secondly, benzimidazolone pigments also have excellent sunlight resistance, especially the yellow series of pigments have high weather resistance and firmness, benzimidazolone pigments in polyolefins have high heat resistance, some of these pigments are currently known as the most heat-resistant organic pigments, and they also have excellent application performance, bright color, coloring power and other characteristics, but they are more difficult to produce. The following is an introduction to several commonly used benzimidazolone pigments.
Pigment Yellow 180
Pigment Yellow 180 has a greenish light yellow color and belongs to the benzimidazolone and imidazolone yellow series of bis azo pigments. Pigment Yellow 180 has high coloring power and light fastness, and its stability in HDPE can reach 290’C/3min without affecting the deformation of the plastic. Therefore, Pigment Yellow 180 is widely used for coloring PVC plastics, polyvinyl hydrocarbon engineering plastics, polycarbonate, polystyrene and polyester products.
Pigment Orange 64
Pigment Orange 64 has a very bright reddish orange coloration, high coloring power and very good light fastness. The light fastness of standard PVC containing 2% titanium dioxide 1/3 is 7～8, and the thermal stability in HDPE can reach 290℃/5min without affecting the distortion of the plastic. Pigment Orange 64 can be used to color polychlorobenzene plastics, polyolefin plastics and polycarbonate.
Pigment Red 176
Pigment Red 176 hue is blue-red, it has high coloring power and good light fastness, the heat stability in high density polyethylene can reach 290℃/5min, and the distortion of the plastic is not affected. Pigment Red 176 can be used for the coloring of polyvinyl chloride plastics, polyolefin plastics, polystyrene and the coloring of polypropylene fiber stock.