申请人:Kansai Paint Co., Ltd
公开号:EP3061796A1
公开(公告)日:2016-08-31
An object of the present invention is to find a cationic electrodeposition coating composition excellent in coating composition stability, finished appearance, and corrosion resistance, and to provide a coated article excellent in these coating film properties.
The present invention provides a cationic electrodeposition coating composition containing a polyester resin (A), an amino group-containing epoxy resin (B), and a blocked polyisocyanate curing agent (C), the polyester resin (A) being present in an amount of 3 to 40 mass%, the amino group-containing epoxy resin (B) being present in an amount of 20 to 60 mass%, and the blocked polyisocyanate curing agent (C) being present in an amount of 10 to 40 mass%, based on the total mass of the components (A), (B), and (C) on a solids basis, wherein the solubility parameter δA of the component (A) and the solubility parameter δB of the component (B) satisfy the relationship |δA-δB|<1.0.
本发明的目的是找到一种在涂层组合物稳定性、成品外观和耐腐蚀性方面性能优异的阳离子电沉积涂层组合物,并提供一种在这些涂膜性能方面性能优异的被涂物。
本发明提供了一种阳离子电沉积涂料组合物,该组合物含有聚酯树脂(A)、含氨基环氧树脂(B)和封端多异氰酸酯固化剂(C),其中聚酯树脂(A)的含量为 3 至 40%,含氨基环氧树脂(B)的含量为 20 至 60%、封端多异氰酸酯固化剂(C)的用量为 10 至 40 质量%,以组分(A)、(B)和(C)的总质量(以固含量为基准)为基础,其中组分(A)的溶解度参数δA 和组分(B)的溶解度参数δB 满足|δA-δB|<1 的关系。0.