申请人:Kawaguchi Daisuke
公开号:US20050249954A1
公开(公告)日:2005-11-10
It is an object of the present invention to provide a method of forming multilayer coating films comprising a clear coating film which will not undergo unfavorable changes in appearance, such as yellowing, popping and/or pinhole formation while reducing the load on the environment as well as a multilayer coating film obtained by such method. A method of forming multilayer coating films on substrates having a cationically electrodeposited coating film using a water-borne intermediate coating composition, a water-borne base coating composition and a powder clear coating composition, wherein said method comprises: a step (I) of applying the water-borne intermediate coating composition, a step (B) of applying the water-borne base coating composition onto the intermediate coating film formed in the step (I), a step (P) of applying a primer onto the base coating film formed in the step (B) and a step (C) of applying the powder clear coating composition onto the primer coating film formed in the step (P), and a step (H) of curing by heating is carried out just after the step (B) and/or just after the step (P).
本发明的目的是提供一种形成多层涂层膜的方法,其中包括一个清漆膜,该膜不会发生不良的外观变化,如黄变、起泡和/或针孔形成,同时减轻环境负担,以及通过这种方法获得的多层涂层膜。一种在具有阳离子电泳涂层膜的基材上使用水性中间涂层组合物、水性底漆组合物和粉末清漆组合物形成多层涂层膜的方法,其中该方法包括:在步骤(I)中涂布水性中间涂层组合物,在步骤(B)中涂布水性底漆组合物到步骤(I)中形成的中间涂层膜上,在步骤(P)中涂布底漆到步骤(B)中形成的底漆膜上,在步骤(C)中涂布粉末清漆组合物到步骤(P)中形成的底漆涂层膜上,并在步骤(B)之后和/或步骤(P)之后立即进行加热固化的步骤(H)。