Лако-красочные материалы — производство

These pigments also originated from the vat dye route. They have very little practical significance in the coating industry. Only chlo­rinated and methylated thioindigo derivatives have any noticeable commercial presence as pigments.

They provide a range of colors from red-violet and maroon to brown shades based on the type and position of the substituents.

They offer good light and solvent fastness with moderate heat sta­bility (200 °C). Some important examples are Pigment Red 88

(Figure 3.19) and 181. Figure 3.19: Pigment Red 88