申请人:Kansai Paint Co., Ltd
公开号:EP2762240A1
公开(公告)日:2014-08-06
An object of the present invention is to provide a method for forming a multilayer coating film, the method making it possible to obtain, with excellent curability at low temperatures and in a short period of time, a multilayer coating film exhibiting an excellent finished appearance. The present invention provides a method for forming a multilayer coating film, wherein a substrate is sequentially coated with at least one layer of one or more base coating compositions, and with one or more clear coating compositions, the method being characterized by utilizing a clear coating composition containing a hydroxy-containing acrylic resin (A) having a hydroxy value in a specific range; a polyisocyanate compound (B) having a viscosity in a specific range; and an organometallic catalyst (C) containing a metallic compound (C1) in which the metal is a member selected from the group consisting of zinc, tin, zirconium, bismuth, lead, cobalt, manganese, titanium, aluminum, and molybdenum, and an amidine compound (C2).
本发明的目的是提供一种形成多层涂膜的方法,该方法可以在短时间内获得在低温下固化性极佳的多层涂膜,该涂膜具有极佳的成品外观。本发明提供了一种形成多层涂膜的方法,其中在基材上依次涂上至少一层一种或多种基底涂层组合物,以及一层或多种透明涂层组合物,该方法的特点是使用透明涂层组合物,该组合物含有含羟基的丙烯酸树脂(A),其羟基值在特定范围内;多异氰酸酯化合物 (B),其粘度在特定范围内;以及有机金属催化剂 (C),其中含有金属化合物 (C1),金属选自锌、锡、锆、铋、铅、钴、锰、钛、铝和钼组成的组,以及脒化合物 (C2)。