Azo pigment composition

摘要

An azo pigment composition suitable for use in a gravure printing ink or paint comprises the following components (I) and (II): (I): a compound obtained by coupling a diazonium salt of a benzene-type amine, which has a carboxyl group or sulfonic group at the meta or para position with respect to the amino group, and either coupler of beta-naphthol or beta-hydroxynaphtoic acid; (II): a naphthol-type azo pigment, such as Parmanent Carmine FB (C.I. 12490), Brilliant Fast Scarlet (C.I. 12315), and Lake Red C (C.I. 15585), etc. The composition does not flocculate pigment particles in a gravure ink or paint during a long period storage.