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    • 106. 发明公开
    • Base coating composition for decorated moldings, top clear coating composition for decorated moldings, and decorated moldings
    • 用于装饰成形引物组合物,用于装饰模塑品和成型品的装饰透明涂料组合物
    • EP1484349A3
    • 2005-12-28
    • EP04253300.0
    • 2004-06-03
    • HONDA MOTOR CO., Ltd.Nippon Bee Chemical Co., Ltd.
    • Itakura, TatsuyaYamaoka, Manabu c/o Nippon Bee Chem Co LtdYamamoto, TakashiUchiyama, Toshihiko c/o Nippon Bee Chem Co Ltd
    • C08G18/28C08G18/61C08G18/62C09D175/04C08J7/04
    • C08J7/045C08G18/289C08G18/4063C08G18/6283C09D175/04Y10S524/906Y10S525/939Y10T428/31551Y10T428/31605
    • It is an object of the present invention to provide a base coating composition for decorated moldings containing silver plating layer and a top clear coating composition for decorated moldings containing silver plating layer, and decorated moldings obtainable by using these compositions; the compositions and moldings are to be excellent in silver deposition tendency, basecoat film smoothness, adhesion and/or film appearance.
      A base coating composition for decorated moldings containing silver plating layer comprising
         a main composition for base coating comprising an acrylic polyol (A1), an organic-modified polydimethylsiloxane (A2) and an epoxysilane (A3) represented by the chemical scheme (1):
      in the scheme, R 1 represents a methyl, methoxy or ethoxy group and R 2 and R 3 are the same or different and each represents a methoxy or ethoxy group, and a curing agent for base coating comprising a polyisocyanate,
         wherein the base coating composition for decorated moldings is a two-package curing type urethane coating composition, in the main composition for base coating, the (A2)/(A1) ratio is 0.02/100 to 0.20/100 on the solid weight basis and the (A3)/(A1) ratio is 1.5/100 to 5.5/100 on the solid weight basis, and the equivalent ratio between the NCO groups in the curing agent for base coating and the OH groups in the acrylic polyol (A1), namely the NCO/OH equivalent ratio, is 1.5 to 3.0.
    • 它是本发明的一个目的是提供一种用于装饰模塑品通过使用这些COMPOSITIONS CONTAINING镀银层和用于装饰模塑品含银镀敷层的顶透明涂料组合物,和装饰成形可获得的底涂层组合物; 组合物和模制品是优异的银沉积倾向,底涂层膜的平滑度,粘附性和/或膜的外观。 用于装饰模塑品含银镀敷层,其包括用于基底涂层包括主组合物A基涂料组合物(丙烯酸类多元醇(A1),以有机聚二甲基硅氧烷改性的(A2)和环氧硅烷的(A3)由化学反应式表示 1):在式中,R <1> darstellt甲基,甲氧基或乙氧基基团,R <2>和R <3>相同或不同,并且各自darstellt甲氧基或乙氧基基团,并且固化剂 为基涂层包含多异氰酸酯为worin装饰成型品的底涂层组合物是一种双包装固化型氨基甲酸酯涂料组合物,在用于基底涂料的主要成分中,(A2)/(A1)的比例为0.02 / 100〜12时20 / 100中的固体重量计和(A3)/(A1)的比例上是1.5 / 100到固体重量计5.5 / 100,并且在固化剂中的NCO基团为基础涂层和OH基团之间的当量比 丙烯酸多元醇(A1),即NCO / OH当量比为1.5〜3.0。