发明名称 |
Process for coloring anodized aluminum by AC electrolysis |
摘要 |
Undesirable greenish tinges that normally result when coloring anodized aluminum by AC electrolysis in solutions of silver salts can be avoided by adding to the electrolytes an appropriate amount of p-toluenesulfonic acid and/or its salts. The coloring solution may also contain (i) sulfuric acid, (ii) alkali metal, ammonium and/or alkaline earth metal salts of sulfuric acid and/or (iii) alkali metal, ammonium and/or alkaline earth metal acetates.
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申请公布号 |
US4917780(A) |
申请公布日期 |
1990.04.17 |
申请号 |
US19890382611 |
申请日期 |
1989.07.19 |
申请人 |
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN |
发明人 |
BRODALLA, DIETER;DE RIESE-MEYER, LOERT;LINDENER, JUERGEN |
分类号 |
C25D11/22 |
主分类号 |
C25D11/22 |
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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