Carbon black pigments
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Gerhard Pfaff
Abstract
Carbon black pigments are manufactured today mainly by modern chemical processes in industrial scale production. They are the most important representatives of black pigments. Carbon black pigments have a number of advantages compared with other inorganic black pigments and with black organic colorants. Hiding power, color stability, solvent resistance, acid and alkali resistance as well as thermal stability are excellent good properties that are not achieved from other blacks. Carbon black pigments are applied in most of the pigment relevant systems, such as printing inks, paints and coatings, plastics, and cosmetics. They are produced by several industrial processes. Furnace blacks, channel blacks and gas blacks have the highest importance among the various carbon blacks. Particle size, particle size distribution, surface quality and structure determine the coloristic and application technical properties of the individual pigments. Oxidative aftertreatment is used in many cases to modify the surface of the pigments concerning the stability and the compatibility with the application system. Particle management, aftertreatment and the provision of pigment preparations are suitable ways for the improvement of the pigments and the optimization of the dosage form.
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