PURPOSE: To obtain a coating material useful as a negative charging carrier for electrostatic development, having excellent wear resistance and uniformity, comprising a specific monomer as a main component and a polymer having primary particle diameters of ≤a given value.

CONSTITUTION: This coating material comprises a monomer of the formula (R1 is H, F or CH3; R2 is 1-10C alkylene; Rf is fluoroalkyl) such as CH2= CHCOOCH2CF3 as a main component and a polymer having ≥500nm primary particle diameters. The polymer is obtained by emulsion polymerization in the presence of an emulsifying agent such as fluorine-based surfactant.