Anthraquinone-Azo Pigments

Other anthraquinone/azo pigments are obtained by coupling 1-aminoanthraquinone derivatives onto bis-quinazolinone methanes with the following chemical structure 82 ... 

Recently, combinations of DPP Pigments with yet other pigments like thiazine indigo, benzimidazolone triphenodioxazine, anthraquinones, azo pigments, benzi-midazolones, isoindolinones " have appeared in the literature. The value of these new combinations has yet to be established. 

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