| abstract |
The present invention provides an aqueous coating composition capable of forming a multilayer coating film with excellent finished appearance and excellent in storage stability. The water-based coating composition is a water-based coating composition to be used as the water-based first colored coating material (X) in a method for forming a multilayer coating film of a three-coat, one-bake method, and the method for forming a multilayer coating film includes: The water-based first coloring paint (X), the water-based second coloring paint (Y) and the clear paint (Z) are sequentially coated on the object to be coated, and the obtained three-layer multilayer coating film is simultaneously cured by heating. The coating composition contains: at least one resin selected from acrylic resin (A) and polyester resin (B), a curing agent (C), and urethane resin particles (D), the urethane resin The resin particle (D) is obtained from a constituent including a polyisocyanate component (d1) containing at least one diisocyanate (d1-1) selected from xylylene diisocyanate and hydrogenated xylylene diisocyanate , and the polyol component (d2). |