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    • 1. 发明申请
    • METHOD FOR FORMING A MULTILAYER COATING FILM
    • 形成多层涂膜的方法
    • WO2010018872A1
    • 2010-02-18
    • PCT/JP2009/064370
    • 2009-08-10
    • KANSAI PAINT CO., LTD.ADACHI, TakatoKITAZONO, KazuakiNAKAHARA, Shuichi
    • ADACHI, TakatoKITAZONO, KazuakiNAKAHARA, Shuichi
    • B05D7/00B05D7/14
    • B05D7/572B05D7/14B05D2451/00C08K3/013C09D5/36C09D7/61Y10T428/31547Y10T428/31721B05D2401/20B05D2401/40
    • An object of the present invention is to provide a method of producing a multilayer coating film having excellent smoothness and high distinctness of image. The method of forming a multilayer coating film according to the present invention includes the steps of: successively applying an aqueous intermediate coating composition, an aqueous base coating composition, and a clear coating composition to a substrate; and simultaneously heat-curing the resulting intermediate, base, and clear coating layers, the aqueous intermediate coating composition (X) comprising: a base resin (A); a curing agent (B); and a diester compound (C), the curing agent (B) being a polyisocyanate compound (B1) and/or a polycarbodiimide compound (B2); and the diester compound (C) being represented by formula (1): (wherein R 1 and R 2 are each independently a hydrocarbon group having 4 to 18 carbon atoms, R 3 is an alkylene group having 2 to 4 carbon atoms, m is an integer of 3 to 25, and m oxyalkylene units (R 3 -O) may be the same or different).
    • 本发明的目的是提供一种具有优异的平滑性和高图像清晰度的多层涂膜的制造方法。 根据本发明的形成多层涂膜的方法包括以下步骤:依次将水性中间涂料组合物,水性基础涂料组合物和透明涂料组合物施加到基材上; 并且对所得到的中间体,碱和透明涂层进行热固化,所述水性中间涂料组合物(X)包括:基础树脂(A); 固化剂(B); 和二酯化合物(C),固化剂(B)为多异氰酸酯化合物(B1)和/或聚碳二亚胺化合物(B2); 和二酯化合物(C)由式(1)表示:(其中R 1和R 2各自独立地为具有4至18个碳原子的烃基,R 3是具有2至4个碳原子的亚烷基,m是 3〜25,m氧化烯单元(R3-O)可以相同或不同)。