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    • 6. 发明授权
    • Method for metallic finish coating
    • 金属涂层方法
    • US4226901A
    • 1980-10-07
    • US962034
    • 1978-11-20
    • Shinji SugiuraTadashi WatanabeSatoru Ito
    • Shinji SugiuraTadashi WatanabeSatoru Ito
    • C09D5/38B05D5/06B05D7/00C08L61/20C09D133/04C09D133/10B05D3/02
    • B05D7/532B05D5/068C09D133/10C08L61/20
    • In a method for applying a metallic finish coat to a substrate which comprises applying a base coat composed of a metallic paint containing a thermosetting resin as a film-forming ingredient to a substrate, applying a top coat composed of a clear paint containing a thermosetting resin as a film-forming ingredient to the surface of the base coat, and heating both the base coat and top coat to cure them, the improvement wherein the film-forming ingredient of the clear paint in the top coat comprises (A) an acrylic resin having a number average molecular weight of 5,000 to 15,000 and a glass transition temperature of from 5.degree. to 35.degree. C. obtained by copolymerizing (a) 42 to 90 parts by weight of at least one methacrylate selected from alkyl methacrylates with the alkyl moiety having 4 to 18 carbon atoms and (b) 10 to 58 parts by weight of a monomer having an ethylenically unsaturated bond and a hydroxyl group in the molecule, the total amount of components (a) and (b) being 100 parts by weight, and (B) an aminoaldehyde resin, the weight ratio of the acrylic resin (A) to the aminoaldehyde resin (B) being from 80:20 to 65:35.
    • 在将金属涂层涂布在基材上的方法中,其包括将由含有热固性树脂的金属涂料构成的底涂层作为成膜剂施用到基材上,涂布由含有热固性树脂的透明涂料 作为底涂层表面的成膜成分,并且加热底涂层和顶涂层以固化它们,其中顶涂层中的透明涂料的成膜成分包括(A)丙烯酸树脂 通过共聚合(a)42至90重量份的至少一种选自甲基丙烯酸烷基酯的甲基丙烯酸酯的甲基丙烯酸酯与烷基部分具有共聚合而获得的数均分子量为5,000至15,000,玻璃化转变温度为5至35℃ 4至18个碳原子,和(b)10至58重量份的分子中具有烯键式不饱和键和羟基的单体,组分(a)和(b)的总量为100份b (B)氨基甲醛树脂,丙烯酸树脂(A)与氨基甲醛树脂(B)的重量比为80:20〜65:35。