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2. 发明授权

US06372365B1 Resin-coated Al-Zn alloy coated steel sheet 失效
标题翻译：树脂涂层的Al-Zn合金涂层钢板
公开(公告)号：US06372365B1
公开(公告)日：2002-04-16
申请号：US09338598
申请日：1999-06-23
申请人： Masatoshi Ibuki , Osamu Goto , Noriaki Yoshitake , Yoshiyuki Murasawa , Shotaro Tsuda
发明人： Masatoshi Ibuki , Osamu Goto , Noriaki Yoshitake , Yoshiyuki Murasawa , Shotaro Tsuda
IPC分类号： B05D714
CPC分类号： B05D7/16 , B05D2350/65 , C23C2222/20 , Y10T428/12569 , Y10T428/12757 , Y10T428/12799 , Y10T428/31663
摘要： A resin-coated Al—Zn alloy coated steel sheet is excellent in formability, resistance to chromium dissolution, corrosion resistance, alkali resistance, and paintability, and produced by the following method. That is, a silane coupling agent having amino group, chromium ion and at least one alcohol selected from the group consisting of trihydric alcohol and dihydric alcohol having the number of carbon of 2 to 3 are compounded into an acrylic polymer resin emulsion including carboxyl group and glycidyl group, and having an acid value of 10 to 60. A pH of the resultant mixture is adjusted within a range of 7 to 9 to obtain a chromate containing resin composition. The chromate containing resin composition is applied on an Al—Zn alloy coated steel sheet as a substrate, and then dried to obtain a resin film on the substrate. A compounding amount of the silane coupling agent is within a range of 0.5 to 3.0 wt % with respect to a resin solid component of the acrylic polymer resin emulsion. A compounding amount of the alcohol is within a range of 25 to 150 wt % with respect to the chromium ion. An amount of the resin film is within a range of 0.5 to 3.0 g/m2, and a content of chromium ion in the resin film is within a range of 5 to 50 mg/m2.
摘要翻译：树脂涂覆的Al-Zn合金涂层钢板的成型性，耐铬溶解性，耐腐蚀性，耐碱性和可涂布性优异，并且通过以下方法制造。也就是说，将具有氨基，铬离子和至少一种选自碳数为2〜3的三元醇和二元醇的醇的硅烷偶联剂配合成包含羧基和缩水甘油基，酸值为10〜60。将所得混合物的pH调节在7〜9的范围内，得到含有铬酸盐的树脂组合物。将含铬酸盐的树脂组合物涂布在作为基材的Al-Zn合金涂层钢板上，然后干燥以在基材上获得树脂膜。相对于丙烯酸系聚合物树脂乳液的树脂固体成分，硅烷偶联剂的配合量在0.5〜3.0重量％的范围内。醇的配合量相对于铬离子为25〜150重量％的范围。树脂膜的量在0.5〜3.0g / m 2的范围内，树脂膜中的铬离子的含量在5〜50mg / m 2的范围内。

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