| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous pigment dispersion that uses a pigment, a pigment treating agent, an aqueous medium, and a dispersion resin soluble in the aqueous medium and that has low viscosity and good dispersion stability, and an aqueous pigment ink for writing utensils or for inkjet. <P>SOLUTION: In the aqueous pigment dispersion comprising a pigment, a pigment treating agent, an aqueous medium, and a dispersion resin soluble in the aqueous medium, the pigment treating agent is a compound represented by general formula (I), and the aqueous medium comprises water and a hydrophilic organic solvent, wherein X is a hydrogen atom, a hydroxyl group, an alkoxy group, a primary, secondary, or tertiary amino group, or an acylamino group; Y is an anthraquinonyl amino group, a phenylamino group, or a phenoxy group having a hydrogen atom, a hydroxyl group, an alkoxy group, a primary, secondary, or tertiary amino group, or an acylamino group at the 5-position; A and B are each an alkyl group, a cycloalkyl group, or an aryl group and at least one of A and B is the group above having at least one substituent having a basic nitrogen atom; Z is a hydrogen atom, a cyano group, a halogen atom, an alkyl group, an alkoxy group, a nitro group or a benzoyl amino group. <P>COPYRIGHT: (C)2011,JPO&INPIT |
