An object is to provide an aqueous coating material composition having high viscosity expression property as well as a viscosity property of decreasing viscosity with increase in shear velocity; in particular, to provide an aqueous coating material composition that can form a multilayer coating film having excellent smoothness, clarity, flip-flop property, adhesion, and water resistance; in addition, to provide a method for forming a multilayer coating film using such aqueous coating material composition, as well as a coated article that has been coated with such aqueous coating material composition. As a solution, an aqueous coating material composition is provided that contains a polyester resin (A), acrylic resin particles (B), a curing agent (C), and a coloring pigment (D), wherein the polyester resin (A) is a resin containing a trifunctional or higher polyfunctional polycarboxylic acid (a1) and a polyol (a2) as monomer components.
目的是提供一种
水性涂层材料组合物,该组合物具有高粘度表达特性以及粘度随剪切速度增加而降低的特性;特别是提供一种
水性涂层材料组合物,该组合物能够形成具有优异平滑度、清晰度、翻转性、附着力和耐
水性的多层涂膜;此外,还提供一种使用这种
水性涂层材料组合物形成多层涂膜的方法,以及一种涂覆了这种
水性涂层材料组合物的涂覆物品。作为解决方案,提供了一种
水性涂层材料组合物,它含有聚酯
树脂(A)、
丙烯酸树脂颗粒(B)、固化剂(C)和着色
颜料(D),其中聚酯
树脂(A)是一种含有三官能团或更高官能团的聚
羧酸(a1)和多元醇(a2)作为单体成分的
树脂。