AZOLAKE PIGMENT COMPOSITION

摘要

PURPOSE:To obtain an azolake pigment composition manifesting excellent printing ink properties without using an additive or a treatment causing various kinds of problems, unlike known azolake pigments. CONSTITUTION:In relation to an azolake pigment composition synthesized by coupling a diazonium salt of an aniline derivative having a water-soluble group with plural impregnating agents and converting it to a lake at one time or stepwise, the impregnating agents for this azolake pigment composition contain 99.8 to 70mol% beta-naphthol or beta-hydroxynaphthoic acid and 0.2 to 30mol% beta- oxynaphthoic acid anilide not having a water-soluble group.