公开(公告)号：US09347144B2

公开(公告)日：2016-05-24

申请号：US13593690

申请日：2012-08-24

申请人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

发明人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

IPC分类号： C25D15/00 ,  C25D3/56 ,  C25D3/04 ,  C25D3/06 ,  C25D3/08

CPC分类号： C25D3/06 ,  C25D3/08 ,  C25D5/14 ,  C25D15/00

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.

摘要翻译： 提供了包含三价铬离子的酸性三价铬电解质水溶液和用于保持溶液中三价铬离子的络合剂，其中含水电解质包含能够在具有所需暗色调的基底上产生涂层的添加剂。 添加剂通常包含胶体二氧化硅的分散体和选自硫氰酸根离子和/或铁离子的另外的添加剂。 电解质用于通过电沉积在衬底上生产所需的暗色装饰铬涂层的方法。

公开(公告)号：US20120111731A1

公开(公告)日：2012-05-10

申请号：US12940249

申请日：2010-11-05

申请人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

发明人： Roshan V. Chapaneri ,  Richard G. Tooth ,  Roderick D. Herdman ,  Stacey L. Handy

IPC分类号： C25D3/06 ,  C25D3/10

CPC分类号： C25D3/06 ,  C25D3/08 ,  C25D5/14 ,  C25D15/00

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.

公开(公告)号：US20130084395A1

公开(公告)日：2013-04-04

申请号：US13248550

申请日：2011-09-29

申请人： Roshan V. Chapaneri ,  Anthony Wall ,  Trevor Pearson ,  Roderick D. Herdman

发明人： Roshan V. Chapaneri ,  Anthony Wall ,  Trevor Pearson ,  Roderick D. Herdman

IPC分类号： B05D3/10

CPC分类号： C23C22/73 ,  C23C18/2086 ,  C23C18/24 ,  C23C18/30 ,  C23C18/32

摘要： A process for plating metal on plastic substrates, particularly ABS substrates, without the use of chrome containing etchants is disclosed. The process involves (i) etching the plastic substrate in an acidic solution of nitrate ions, and preferably silver ions, (ii) conditioning the substrate in an aqueous solution containing an amine or ammonia, (iii) activating the substrate, preferably with a palladium activator, and (iv) plating the substrate with an electroless plating solution. The process allows for complete adherent electroless plating of plastic substrates, particularly ABS substrates, without the use of chromic etchants.

摘要翻译： 公开了一种在不使用含铬蚀刻剂的情况下将金属镀在塑料基材，特别是ABS基材上的方法。 该方法包括（i）在硝酸根离子的酸性溶液中蚀刻塑料基底，优选银离子，（ii）在含胺或氨的水溶液中调理底物，（iii）活化底物，优选用钯 活化剂，和（iv）用化学镀溶液电镀基材。 该方法允许塑料基材，特别是ABS基材的完全粘附无电镀，而不使用铬蚀刻剂。