| 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 | US9347144(B2) | 申请公布日期 | 2016.05.24 |
| 申请号 | US201213593690 | 申请日期 | 2012.08.24 |
| 申请人 | Chapaneri Roshan V.;Tooth Richard G.;Herdman Roderick D.;Handy Stacey L. | 发明人 | Chapaneri Roshan V.;Tooth Richard G.;Herdman Roderick D.;Handy Stacey L. |
| 分类号 | C25D15/00;C25D3/56;C25D3/04;C25D3/06;C25D3/08 | 主分类号 | C25D15/00 |
| 代理机构 | Carmody Torrance Sandak & Hennessey LLP | 代理人 | Carmody Torrance Sandak & Hennessey LLP |
| 主权项 | 1. An aqueous acidic trivalent chromium electrolyte for electrodepositing chromium onto a substrate, the chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution, wherein the aqueous acidic trivalent chromium electrolyte further comprises a dispersion of colloidal silica. | ||
| 地址 | Coventry GB | ||