PROBLEM TO BE SOLVED: To provide a resin particulate dispersion which can be added to an inkjet recording ink as a binder composition, with excellent dispersion stability in an aqueous medium and high adhesion to coloring materials such as a pigment.SOLUTION: A resin particulate dispersion comprises an aqueous medium, and a resin particulate dispersed in the aqueous medium, the resin particulate being surface-modified with a benzimidazolinone derivative represented by the general formula (1) in the figure, where at least one of Zand Zis a polymerizable functional group.