Method for producing acrylic resin-coated silica particle dispersion

A method for producing an acrylic resin-coated silica particle dispersion, the method comprising:

• (1) mixing and heating silica particles (A), an organic solvent (B) and a monomer having a polymerizable unsaturated group and a hydrolyzable silyl group (C) to obtain a polymerizable unsaturated group-containing silica particle dispersion (i),
• (2) adding a tertiary amine (D) with a molecular weight of 120 to 380 and a having a terminal alkyl group, to the polymerizable unsaturated group-containing silica particle dispersion (i) obtained in (1), to obtain a polymerizable unsaturated group-containing silica particle dispersion (ii),
• (3) reacting the polymerizable unsaturated group-containing silica particle dispersion (ii) obtained in (2) with a polymerizable unsaturated monomer (E), in a solid mass ratio of (ii):(E)=20:80 to 90:10, to obtain an acrylic resin-coated silica particle dispersion,
• wherein at least one of the alkyl groups of the tertiary amine (D) is an alkyl group of 5 to 12 carbon atoms.