Commercially Available Benzimidazolone Pigments

Table 23 lists commercially available benzimidazolone pigments. It should be noted that pigments in the red range are often derived from a diazonium component carrying a methoxy group in ortho position to the azo group. 

Commercially Available Benzimidazolone Pigments 361 Pigment Orange 62... 

While the acetoacetyl derivative 1 provides greenish yellow to orange products, the naphthoylamino compound 2 affords colorants having medium red to carmine, maroon, bordeaux or brown shades. Figure 10-2 summarizes the Colour Index data, shades and structural formulae of commercial available benzimidazolone pigments. 

F ure 10-2a Colour Index data, shades and structural formulae of commercially available benzimidazolone pigments (yellow and orange). 

Table 10-2 Spectrometric data of five commercially available benzimidazolone pigments.

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