公开(公告)号：WO2015134690A1

公开(公告)日：2015-09-11

申请号：PCT/US2015/018848

申请日：2015-03-05

Applicant: MACDERMID ACUMEN, INC.

Inventor： MERTENS, Marc ,  TOOTH, Richard ,  HERDMAN, Roderick, D. ,  CLARKE, Terence ,  PEARSON, Trevor

IPC: C25D3/06 ,  C25D5/10 ,  C25D5/12 ,  C25D5/14 ,  C25B1/02

CPC classification number: C25D3/06 ,  C25D5/48 ,  C25D9/08 ,  Y10T428/12854

Abstract: A method of treating a substrate, wherein the substrate comprises a layer deposited from a trivalent chromium electrolyte, is described. The method includes the steps of providing an anode and the chromium (III) plated substrate as a cathode in an electrolyte comprising (i) a trivalent chromium salt; and (ii) a complexant; and passing an electrical current between the anode and the cathode to passivate the chromium (III) plated substrate. The substrate may be first plated with a plated nickel layer so that the chromium (III) plated layer is deposited over the nickel plated layer.

Abstract translation: 描述了一种处理衬底的方法，其中衬底包括由三价铬电解质沉积的层。 该方法包括以下步骤：在电解质中提供阳极和镀有铬（III）的底物作为阴极，其包括（i）三价铬盐; 和（ii）复合物; 并在阳极和阴极之间通过电流以钝化镀铬（III）的衬底。 可以首先将衬底镀覆镀镍层，以使镀铬层（III）沉积在镀镍层上。

公开(公告)号：WO2013122774A1

公开(公告)日：2013-08-22

申请号：PCT/US2013/024719

申请日：2013-02-05

Applicant: MACDERMID ACUMEN, INC.

Inventor： HINGLEY, Stacey ,  TOOTH, Richard ,  CLARKE, Terence

IPC: C25D3/06

CPC classification number: C25D3/06 ,  C25D21/12

Abstract: A method of adjusting and controlling the color of trivalent chromium deposits is provided. The method includes the steps of: (a) measuring the color of a trivalent chromium deposit standard; (b) adding one or more color enhancing additives to a trivalent chromium electrolyte; (c) contacting the substrate with the trivalent chromium electrolyte containing the one or more color enhancing additives to deposit trivalent chromium on the substrate; (d) measuring the color of the color-enhanced trivalent chromium deposit; (e) comparing the color of the color-enhanced chromium deposit to that of the standard; and (f) if necessary, adjusting the amount of the one or more color enhancing additives added to the trivalent chromium electrolyte if the color of the color-enhanced chromium deposit is outside of a desired optical variation from that of the standard color-enhanced chromium deposit. The color of the trivalent chromium deposit may be measured using a spectrophotometer.

Abstract translation: 提供了调节和控制三价铬沉积物的颜色的方法。 该方法包括以下步骤：（a）测量三价铬沉积物标准品的颜色; （b）向三价铬电解质中加入一种或多种增色添加剂; （c）使基材与含有一种或多种增色添加剂的三价铬电解质接触，以在基板上沉积三价铬; （d）测量增色三价铬沉积物的颜色; （e）将增色铬矿床的颜色与标准品的颜色进行比较; 和（f）如果需要，调整添加到三价铬电解质中的一种或多种增色添加剂的量，如果增色铬沉积物的颜色在与标准色增强铬 存款。 可以使用分光光度计测量三价铬沉积物的颜色。

公开(公告)号：WO2012060918A1

公开(公告)日：2012-05-10

申请号：PCT/US2011/047856

申请日：2011-08-16

Applicant: MacDermid Acumen, Inc. ,  CHAPANERI, Roshan ,  TOOTH, Richard ,  HERDMAN, Roderick, D. ,  HANDY, Stacey, L.

Inventor： CHAPANERI, Roshan ,  TOOTH, Richard ,  HERDMAN, Roderick, D. ,  HANDY, Stacey, L.

IPC: C25D3/04

CPC classification number: C25D3/06 ,  C25D3/08 ,  C25D5/14 ,  C25D15/00

Abstract: 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,

Abstract translation: 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，