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    • 8. 发明公开
    • Aqueous coating composition
    • WässrigeBeschichtungsmittelzusammensetzung。
    • EP0628613A2
    • 1994-12-14
    • EP94304116.0
    • 1994-06-08
    • NIPPON PAINT CO., LTD.
    • Sho, KatsuhikoShibata, YasuhiroIshii, KeizouImamura, TsuyoshiTakeuchi, Kunihiko
    • C09D133/04B05D7/26
    • C09D133/02C08L33/064C08L33/066C08L2205/18C09D133/066C08L2666/04
    • An aqueous coating composition comprising: (A) 10 to 95% by weight (based on solid content) of a film forming polymer which is prepared by neutralizing at least a part of acid groups contained in a copolymer having a number average molecular weight ranging from 6,000 to 50,000 prepared by copolymerizing (A1) 5 to 40% by weight of an amide group-containing ethylenically unsaturated monomer, (A2) 3 to 15% by weight of an acid group-containing ethylenically unsaturated monomer, (A3) 10 to 40% by weight of a hydroxyl group-containing ethylenically unsaturated monomer, and (A4) a remainder amount of ethylenically unsaturated monomers other than the monomers (A1) to (A3); and (B) 5 to 90% by weight (based on solid content) of an aqueous dispersion of carboxyl group-containing acrylic resin particles having a particle size ranging from 0.01 to 1.0 µm and an acid value ranging from 5 to 80.
      An aqueous metallic-base coating composition which enables to form a coating film of an improved appearance at a high workability almost free from "sugging" and "unevenness" is provided.
    • 一种水性涂料组合物,其包含:(A)10至95重量%(基于固体含量)的成膜聚合物,其通过中和包含在数均分子量范围内的共聚物中的至少一部分酸基而制备 通过共聚(A1)5〜40重量%的含酰胺基的烯属不饱和单体(A2)3〜15重量%的含酸基的烯属不饱和单体,(A3)10〜40 (A4)除了单体(A1)〜(A3)以外的剩余量的烯属不饱和单体;(A4)除了单体 和(B)5至90重量%(基于固体含量)的含有羧基的丙烯酸树脂颗粒的水分散体,其粒径范围为0.01至1.0μm,酸值为5至80。 提供了能够以几乎没有“糖化”和“不均匀”的高加工性形成改善外观的涂膜的水性金属基涂料组合物。