发明名称 ONE-COAT PRECOATED STEEL PANEL EXCELLENT IN MOLDING PROCESSABILITY AND PRODUCTION METHOD THEREOF
摘要 <p>PROBLEM TO BE SOLVED: To obtain a one-coat precoated steel panel less prone to generate a crack in a coating film even in severe molding processing and enabling high speed operation at a time of production. SOLUTION: The surface of a galvanized steel panel to which chemical forming treatment is applied is coated with a solvent type paint compsn. wherein a polyester resin with a number average mol.wt. of 5,000-25,000, a glass transition temp. of 20-80 deg.C, a hydroxyl number of 3-30 KOH mg/g and an acid value of 0-10 KOH mg/g, an epoxy resin with an epoxy equivalent of 180-1,000 and a curing agent consisting of a blocked polyisocyanate compd. and a melamine resin are compounded as main components in a specific ratio and, especially pref., 20-70 mol% of the polyhydric alcohol of the polyester resin is an ethylene oxide adduct of bisphenol A and/or a propylene oxide aduct of bisphenol A represented by the formula and the coated steel panel is baked to form a coating film with a dry film thickness of 10μm or less.</p>
申请公布号 JP2001009368(A) 申请公布日期 2001.01.16
申请号 JP19990182991 申请日期 1999.06.29
申请人 NKK CORP;DAINIPPON TORYO CO LTD 发明人 ITO SUMI;YOSHIDA KEIJI;YAMASHITA MASAAKI;KATO HIROYUKI;KAJITA YASUYUKI;OGAWA SUSUMU;KATO NOBUYOSHI
分类号 B05D7/14;B32B15/08;B32B15/09;B32B15/092;B32B37/06;C09D161/28;C09D163/00;C09D167/00;C09D175/04;(IPC1-7):B05D7/14;B32B31/26 主分类号 B05D7/14
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