Лако-красочные материалы — производство

Dioxazine pigments are a small but important class of high per­formance organic pigments derived from triphenodioxazine. They are extremely light fast and weather fast pigments with good to excellent solvent and migration resistance. They are used both in coatings and printing inks. They offer a unique, clean violet hue that cannot be achieved by blending other pigments. Apart from producing violet shades, they are used to tint white paint to clean up the slight yellowish tone of rutile to produce brilliant white paints. Similarly, they are also used in minute quantities to modify the undertone of phthalocyanine blue and carbon black. Important exa­mples are Pigment Violet 23 (Figure 3.21) and 37.