发明名称 |
STEEL SHEET COATED WITH COMPOSITE ORGANIC FILM AND EXCELLENT IN OUTSIDE RUSTPROOFNESS AND BRIGHTNESS, AND PRODUCTION THEREOF. |
摘要 |
<p>A steel sheet coated with a composite organic film and excellent in rustproofness and brightness when applied to the outside of an outer panel of an automobile. It is produced by coating the surface of a galvanized steel sheet with a chromate layer at a given chromium coverage and forming thereon an organic resin film with a thickness of 0.2 to 2 mu m prepared by adding a given proportion of a rustproofing additive to a block urethane-modified epoxy resin prepared by adding a given proportion of a block urethane comprising a polyol, a polyisocyanate and a blocking agent to a modified epoxy resin comprising an epoxy resin, a polyfunctional amine and, if necessary, a monoisocyanate or phosphoric acid.</p> |
申请公布号 |
EP0548373(A1) |
申请公布日期 |
1993.06.30 |
申请号 |
EP19920914945 |
申请日期 |
1992.07.10 |
申请人 |
NKK CORPORATION |
发明人 |
KUBOTA, TAKAHIRO;YAMASHITA, MASAAKI;WATANABE, TOYOFUMI;KIKUTA, YOSHIO;KOBORI, KIMIO;OGATA, HIDEAKI |
分类号 |
B05D7/00;C09D5/08;C09D163/00 |
主分类号 |
B05D7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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