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    • 3. 发明公开
    • 양이온 전착 코팅 조성물
    • 阳离子电沉积涂料组合物
    • KR1020060128706A
    • 2006-12-14
    • KR1020060051499
    • 2006-06-08
    • 닛본 페인트 홀딩스 가부시키가이샤
    • 미하라야스오야마모토다케후미
    • C09D159/04C09D159/00
    • C09D5/448B01D19/0404C09D5/443
    • Provided is a cationic electrodeposition coating composition, which exhibits a good antifoaming property, prevents an uneven drying effectively, and inhibits the foaming formation of an electrodeposition bath effectively. The cationic electrodeposition coating composition comprises a binder resin containing a cationic epoxy resin and a block isocyanate hardener, and an antifoaming agent. The antifoaming agent contains at least one polyoxyalkylene compound(A) represented by any one of the following formulae 1-3. In the formulae, Q is a reaction moiety formed by removing hydrogen atoms from t unit of primary hydroxyl groups of a non-reducing disaccharide or trisaccharide, L is a reaction moiety of isocyanate or a reaction moiety of alkyl dihalide, OA is a C2-4 oxyalkylene group, n1 to n4 each is independently an integer of 2-40, t is an integer of 2-4, m is an integer of 1-3 and is smaller than t unit, provided that the total number of OA in the molecule is 10 to 80 per one Q.
    • 本发明提供一种阳离子电沉积涂料组合物,其具有良好的消泡性能,有效防止不均匀干燥,并有效抑制电沉积浴的起泡形成。 阳离子电沉积涂料组合物包含含有阳离子环氧树脂和嵌段异氰酸酯硬化剂的粘合剂树脂和消泡剂。 消泡剂含有至少一种由下式1-3中任一项表示的聚氧化烯化合物(A)。 在该式中,Q是通过从非还原性二糖或三糖的伯羟基的t单元除去氢原子形成的反应部分,L是异氰酸酯的反应部分或二烷基卤化物的反应部分,OA是C2- 4个氧化烯基,n1〜n4分别独立地为2-40的整数,t为2-4的整数,m为1-3的整数,小于t个单元,条件是在 每个Q分子是10到80个。