BigPatents India

A dispersant for organic pigments, comprising a compound represented by the following formula (I) : Wherein X and X’ each Independently represent a hydrogen atom, a hydroxyl group, en alkoxy group, a primary, secondary or tertiary amino group, or an acylamino group; V represents an anthraquinonylamino, phenylamino group having a hydrogen atom, a hydroxyl group, an alkoxy group, a primary, secondary or tertiary amino group, or an acylamino group at the 4-position or 5- position thereof; A and 6 each Independently represent an aucyl group, a cycloalkyl group or an aryl group, and at least one of A and B has at least one substituent group containing a basic nitrogen atom; and Z represents a hydrogen atom, a cyano group, a halogen atom, an alkyl group, an alkoxy group, a nitro group, a benzoylamino group or a 3-benzoyl group, and said 3-benzoyi group may be fused together with X to form an acridone ring. (FIG.nil)