Abstract: Provided is a surface-treated pigment that is a metallic pigment composed of plate-like particles of which surfaces are treated with an alkoxysilane compound having at least one glycidyl group and one methoxy group.

Abstract: A method for producing a water-resistant aluminum pigment dispersion includes (a) adding a treatment agent containing a compound of general formula (1) described below to an aluminum pigment dispersion containing aluminum pigment particles dispersed in an organic solvent and reacting a hydroxy group present on a surface of each of the aluminum pigment particles with the compound of general formula (1) described below to form a film on the surface of each aluminum pigment particle, (b) removing at least a portion of the organic solvent, and (c) adding an aqueous solution containing at least one selected from polyoxyethylene alkyl ether phosphate and salts thereof, (wherein p represents an integer of 1 to 3, q represents an integer that satisfies the equation p+q=3, r represents an integer of 2 to 10, R1 and R2 each independently represent an alkyl group having 1 to 4 carbon atoms, and R3 represents an acrylic group, an acryloyl group, or a methacryloyl group).

Abstract: A method for producing water-repellent treated aluminum pigment dispersion includes (a) adding a glycidyl group-containing compound represented by the following formula (1) to an aluminum pigment dispersion in which an aluminum pigment is dispersed in an organic solvent for reacting a hydroxyl group present on the surface of the aluminum pigment with the glycidyl group-containing compound represented by the formula (1) to form a covering layer on the surface of the aluminum pigment: (in the formula, p represents an integer of 1 to 3, q represents an integer that satisfies a relation of p+q=3, r is an integer of 2 to 10, and R1 and R2 independently represent an alkyl group having 1 to 4 carbon atoms).