Aqueous coating material composition, method for forming coating film, and method for forming multilayer coating film

Abstract

The purpose of the present invention is to provide an aqueous coating material composition which exhibits excellent storage stability and can form a coating film having excellent abrasion resistance, chipping resistance and adhesion to glass even if cured at a relatively low temperature. This aqueous coating material composition contains: an aqueous dispersion of particles of a urethane resin (A) obtained from a compound (a1) having a secondary amino group and an alkoxysilyl group and an isocyanate group-containing urethane prepolymer (a2); and a curing agent (B). The aqueous coating material composition is characterized in that: the compound (a1) having a secondary amino group and an alkoxysilyl group is obtained from constituent components including a compound (a11) containing a primary amino group and an alkoxysilyl group and a polymerizable unsaturated group-containing compound (a12); and the content of the curing agent (B) falls within the range 5-50 mass % relative to the total amount of solid resin content in the aqueous coating material composition.

Dependencies are inferred from the claim text.