Patent ID: 7074267
Filing Date: 2006-07-11
Classification: C09B,C09D

Abstract:
1. A pigment composition comprising (1) an organic pigment selected from the group consisting of monoazo, disazo, naphthol, dioxazone, azomethin, azocondensation, metal complex, nitro, perinone, quinoline, anthraquinone, benzimidozolone, isoindoline, isoindolinone, quinacridone, hydroxyanthraquinone, aminoanthraquinone, anthrapyrimidine, indanthrone, flavanthrone, pyranthrone, anthantrone, isoviolanthrone, diketopyrrolopyrrole, carbazole, indigo and thioindigo pigments; and (2) a combination of at least one anionic and at least one cationic coloured compound wherein the combination (2) comprises (a) at least one anionic and at least one cationic dye, each of a chemical structure differing from that of the organic pigment (1), (b) at least one anionic and at least one cationic pigment derivative, the chemical structure of at least one of which is not derived from said organic pigment (1), or (c) mixtures of (a) and (b).