发明名称 |
METHODS FOR TREATING A FERROUS METAL SUBSTRATE |
摘要 |
<p>Disclosed are methods for treating and coating a ferrous metal substrate, such as cold rolled steel, hot rolled steel, and electrogalvanized steel. These methods include contacting the ferrous metal substrate with an aqueous pretreatment composition comprising: (a) a Group IIIB and/or IVB metal compound; (b) phosphate ions; and (c) water. Also disclosed are off-shift methods of removing iron from the pretreatment bath.</p> |
申请公布号 |
CA2898751(A1) |
申请公布日期 |
2014.09.12 |
申请号 |
CA20142898751 |
申请日期 |
2014.02.28 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
VARGAS, RICHARD M.;MCINTYRE, JOHN F. |
分类号 |
C23C22/86;C23C22/34;C23C22/36 |
主分类号 |
C23C22/86 |
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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