发明名称 |
CHROMATE TREATMENT BATH COMPOSITION AND PROCESS FOR APPLICATION TO METALS |
摘要 |
A chromate treatment bath composition, afforded by the introduction, into an aqueous solution containing hexavalent Cr ions and trivalent Cr ions, of a nonionic-anionic composite surfactant that has an anionic moiety and a nonionic moiety composed of a polyethylene glycol group or a group consiting of an ethylene oxide addition polymer, provides metal surfaces onto which a layer of the composition containing 5 to 150 mg/m<2> of total chromium is dried with a chromate film that has an excellent alkali resistance and water resistance, a high chromium fixing ratio, an excellent corrosion resistance, and an excellent paint film adherence. |
申请公布号 |
WO9721845(A2) |
申请公布日期 |
1997.06.19 |
申请号 |
WO1996US18555 |
申请日期 |
1996.11.27 |
申请人 |
HENKEL CORPORATION;OUE, TAKASHI;MIZUNO, KENSUKE |
发明人 |
OUE, TAKASHI;MIZUNO, KENSUKE |
分类号 |
C23C22/28;C23C22/30;C23C22/33;C23C22/34;C23C22/37;C23C22/38;C23C22/78 |
主分类号 |
C23C22/28 |
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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