发明名称 |
DARK COLORED CHROMIUM BASED ELECTRODEPOSITS |
摘要 |
An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition. |
申请公布号 |
EP2635723(A4) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20110838391 |
申请日期 |
2011.08.16 |
申请人 |
MACDERMID ACUMEN, INC. |
发明人 |
CHAPANERI, ROSHAN;TOOTH, RICHARD;HERDMAN, RODERICK, D.;HANDY, STACEY, L. |
分类号 |
C25D3/06;C25D3/08;C25D15/00 |
主分类号 |
C25D3/06 |
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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