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    • 1. 发明授权
    • Organic composite coated steel sheet with good press formability and
perforation corrosion resistance
    • 有机复合涂层钢板具有良好的冲压成型性和耐穿孔性
    • US6015628A
    • 2000-01-18
    • US809766
    • 1997-06-18
    • Kazuya UrataNaoto YoshimiTakahiro KubotaMasaaki YamashitaYasuhiko Haruta
    • Kazuya UrataNaoto YoshimiTakahiro KubotaMasaaki YamashitaYasuhiko Haruta
    • B05D7/14B05D7/00B32B15/08B32B15/092B21D39/00B32B27/38C03C27/02
    • B05D7/51Y10T428/12549Y10T428/12569Y10T428/12611Y10T428/12799Y10T428/12972Y10T428/31511
    • This invention provides an organic composite coated steel sheet comprising, as the base, a zinc or zinc alloy coated steel sheet, which can be used in automobile bodies and electric appliances. The coated steel sheet has excellent press formability with oil, while having excellent perforation corrosion resistance and excellent corrosion resistance in a rust-contaminated environment. The coated steel sheet comprises a zinc or zinc alloy plated steel sheet having, on its surface, a chromate layer and an organic film formed in that order, in which the organic film has a thickness of from 0.1 to 3.0 .mu.m and comprises (i) an epoxy resin mixture composed of a base resin as prepared by adding at least one basic nitrogen atom and at least two primary hydroxyl groups to the ends of an epoxy resin, and a curing agent for the resin of a polyisocyanate compound, as mixed in a particular ratio by weight of the two, (ii) a composite lubricant comprising a polyolefin wax as prepared through coordination-anionic polymerization using a Ziegler catalyst, and fine powder of a fluorine resin, as combined in a particular ratio by weight of the two, and (iii) a rust preventive additive, as combined in a particular ratio of (i), (ii) and (iii).
    • PCT No.PCT / JP96 / 02156 Sec。 371日期:1997年6月18日 102(e)1997年6月18日PCT PCT 1996年7月31日PCT公布。 出版物WO97 / 04957 日期1997年2月13日本发明提供一种有机复合涂层钢板,其包含可用于汽车车身和电器的锌或锌合金涂层钢板作为基底。 涂布钢板与油的冲压成形性优异,同时在防锈污染的环境中具有优异的耐穿孔性和优异的耐腐蚀性。 涂覆钢板包括锌或锌合金电镀钢板,其表面上具有铬酸盐层和依次形成的有机膜,其中有机膜的厚度为0.1-3.0μm,并且包含(i )由通过向环氧树脂的末端添加至少一个碱性氮原子和至少两个伯羟基而制备的基础树脂的环氧树脂混合物,以及多异氰酸酯化合物的树脂固化剂 (ii)通过使用齐格勒催化剂的配位 - 阴离子聚合制备的包含聚烯烃蜡的复合润滑剂和氟树脂的细粉末,以特定的二重量比例组合, ,和(iii)以特定比例(i),(ii)和(iii)组合的防锈添加剂。
    • 9. 发明授权
    • Weldable black steel sheet with low-gloss appearance
    • 具有低光泽外观的可焊接黑色钢板
    • US5387473A
    • 1995-02-07
    • US36991
    • 1993-03-24
    • Naoto YoshimiMasaaki YamashitaToyofumi Watanabe
    • Naoto YoshimiMasaaki YamashitaToyofumi Watanabe
    • B05D7/14C09D7/00B32B15/08
    • C09D7/005B05D7/14B05D2350/20B05D2701/40Y10T428/12549Y10T428/12569
    • A steel sheet plated with zinc or a zinc alloy carries a chromate film formed on each side thereof and having a coating weight of 1 to 200 mg/m.sup.2 in terms of metallic chromium, and a black film formed at least on the chromate film on one side thereof. The black film contains 100 parts by weight of a thermosetting resin which is soluble in an organic solvent, 1 to 200 parts by weight of a black dye which is also soluble in an organic solvent, and 1 to 100 parts by weight of organic resin particles. It may further contain 1 to 100 parts by weight of fine inorganic particles, or a solid lubricant, or both. The black film has a thickness of 0.3 to 5.0 microns which is sufficiently small to permit the welding of the sheet, and yet has an excellently black surface. The organic resin particles, etc., which are used as a matting agent, give the film a surface of low gloss which resists visible staining by fingerprints.
    • 镀锌或锌合金的钢板在其每一侧上载有形成铬酸盐膜,其镀铬量为金属铬换算为1〜200mg / m 2,至少在铬酸盐膜上形成黑色膜 侧。 该黑色膜包含100重量份的可溶于有机溶剂的热固性树脂,1至200重量份也可溶于有机溶剂的黑色染料和1至100重量份的有机树脂颗粒 。 还可以含有1〜100重量份的无机微粒,或固体润滑剂,或两者。 该黑色膜的厚度为0.3至5.0微米,其足够小以允许片材的焊接,而且具有非常好的黑色表面。 用作消光剂的有机树脂颗粒等为膜提供低光泽的表面,其抗指纹的可见染色。