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    • 2. 发明授权
    • Method for color matching of powder coating composition
    • 粉末涂料组合物配色方法
    • US06348520B1
    • 2002-02-19
    • US09494118
    • 2000-01-28
    • Kazuhiko OhnishiYugen KawamotoHidefumi Takanashi
    • Kazuhiko OhnishiYugen KawamotoHidefumi Takanashi
    • C08K700
    • C09D5/03Y10S524/904Y10S525/934
    • The present invention provide a method for color matching of a thermosetting powder coating composition, the method comprising the steps of: (1) dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 20 &mgr;m or less to achieve color matching, and (2) granulating the dryblend to a particle size in the range suitable for powder coating, by heating and agitating the dryblend, or by adding a specific solid binder, or by grinding and classifying a sheet or grains formed by compressing the dryblend. According to the present invention, color matching can be easily made, and a color-matched powder coating composition is obtained which is excellent in application characteristics, finished appearance and film properties.
    • 本发明提供一种热固性粉末涂料组合物的颜色匹配方法,该方法包括以下步骤:(1)将两种或多种平均粒度为20μm的不同颜色的起始着色的热固性粉末涂料组合物干混,或 较少实现配色,以及(2)通过加热和搅拌干混物,或通过加入特定的固体粘合剂,或通过研磨和分级形成的片材或颗粒将干燥混合物制粒成适于粉末涂料的范围内的粒度 通过压缩干混料。 根据本发明,可以容易地进行配色,得到涂布特性,外观和膜特性优异的配色粉末涂料组合物。
    • 9. 发明授权
    • Powder coating composition for forming multilayer film
    • 用于形成多层膜的粉末涂料组合物
    • US06770694B2
    • 2004-08-03
    • US10126681
    • 2002-04-22
    • Kazuhiko OhnishiIsamu TakabayashiMasami Kobata
    • Kazuhiko OhnishiIsamu TakabayashiMasami Kobata
    • C08K332
    • C09D5/03
    • The present invention provides a powder coating composition for forming a multilayer film, obtainable by dry blending a lower layer-forming thermosetting powder coating material (A) and an upper layer-forming thermosetting powder coating material (B), wherein at least one of the following conditions is satisfied: (I) the material (A) contains an onium salt compound; (II) particles of 45 &mgr;m or smaller diameter account for at least 90 wt. % of each of the materials (A) and (B); and (III) the material (A) is higher than the material (B) in melt viscosity (Pa·s) measured at 130° C. The powder coating composition of the invention is capable of sufficiently separating into layers and forming a multilayer film with excellent properties.
    • 本发明提供一种用于形成多层膜的粉末涂料组合物,其通过将下层形成的热固性粉末涂料(A)和上层形成的热固性粉末涂料(B)干混而获得,其中至少一种 满足以下条件:(I)材料(A)含有鎓盐化合物; (II)颗粒为45μm或更小的直径占至少90wt。 每种材料(A)和(B)的%; 和(III)在130℃下测定的材料(A)的熔融粘度(Pa.s)高于材料(B)。本发明的粉末涂料组合物能够充分分离成层并形成多层膜 具有优良的性能。