Black Masterbaches

Carbon black has always been the most widely used black pigment because of its coloring ability, cost effectiveness and performance. Simple coloring requires only enough carbon black to achieve opacity - 0.5% loading. The undertone exhibited by carbon black ranges from warm brown to alcohol blue. Carbon blacks with blue undertones are often favored because of their perceived higher jetness. Tint strength is the relative ability of the carbon black to darken a colored resin. Gloss level can range from a very shiny appearance to a matte finish. Carbon blacks are composed of spherical partials ranging in diameter from 10 to 100 nm. and in surface area from 25 to 150 m2/g. Surface area, in turn, affects jetness (intensity of black color) and UV resistance of the carbon black. Grater surface area increase both jetness and UV resistance because more surface is optically available for absorption of visible & UV light.