公开(公告)号：EP2920341A4

公开(公告)日：2016-04-27

申请号：EP13854930

申请日：2013-09-26

申请人： MACDERMID ACUMEN INC

发明人： PEARSON TREVOR ,  CLARKE TERENCE ,  CHAPANERI ROSHAN V

IPC分类号： C25B11/02 ,  C25B11/03 ,  C25B11/12

CPC分类号： C25B11/02 ,  C23C18/1653 ,  C23C18/24 ,  C25B1/21 ,  C25B11/03 ,  C25B11/12

摘要： An electrolytic cell and a method of electrochemical oxidation of manganese (II) ions to manganese(III) ions in the electrolytic cell are described. The electrolytic cell comprises ( 1 ) an electrolyte solution of manganese(II) ions in a solution of 9 to 15 molar sulfuric acid; (2) a cathode immersed in the electrolyte solution; and (3) an anode immersed in the electrolyte solution and spaced apart from the cathode. Various anode materials are described including vitreous carbon, reticulated vitreous carbon, and woven carbon fibers.

公开(公告)号：EP3114258A4

公开(公告)日：2018-01-03

申请号：EP15757833

申请日：2015-03-05

申请人： MACDERMID ACUMEN INC

发明人： MERTENS MARC ,  TOOTH RICHARD ,  HERDMAN RODERICK D ,  CLARKE TERENCE ,  PEARSON TREVOR

IPC分类号： C25D3/06 ,  C25B1/02 ,  C25D5/10 ,  C25D5/12 ,  C25D5/14 ,  C25D5/48 ,  C25D9/08

CPC分类号： C25D3/06 ,  C25D5/48 ,  C25D9/08 ,  Y10T428/12854

摘要： 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.

公开(公告)号：EP2971260A4

公开(公告)日：2017-04-19

申请号：EP14779082

申请日：2014-03-07

申请人： MACDERMID ACUMEN INC

发明人： PEARSON TREVOR ,  CLARKE TERENCE ,  CHAPANERI ROSHAN V ,  ROBINSON CRAIG ,  HYSLOP ALISON ,  SINGH AMRIK

IPC分类号： C25C1/10 ,  C23C18/20 ,  C23C18/24 ,  C25B1/21 ,  C25B11/04 ,  C25B11/12 ,  C25B15/02 ,  C25D5/56

CPC分类号： C25B1/21 ,  C23C18/2086 ,  C23C18/24 ,  C25B11/0473 ,  C25B11/12 ,  C25B15/02 ,  C25D5/56

摘要： An electrolytic cell and a method of electrochemical oxidation of manganese(II) ions to manganese(III) ions in the electrolytic cell are described. The electrolytic cell comprises (1) an electrolyte solution of manganese(II) ions in a solution of at least one acid; (2) a cathode immersed in the electrolyte solution; and (3) an anode immersed in the electrolyte solution and spaced apart from the cathode. Various anode materials are described including vitreous carbon, reticulated vitreous carbon, woven carbon fibers, lead and lead alloy. Once the electrolyte is oxidized to form a metastable complex of manganese(III) ions, a platable plastic may be contacted with the metastable complex to etch the platable plastic. In addition, a pretreatment step may also be performed on the platable plastic prior to contacting the platable plastic with the metastable complex to condition the plastic surface.

摘要翻译： 描述了电解槽中的电解槽和锰（II）离子向锰（III）离子电化学氧化的方法。 电解池包括（1）锰（II）离子在至少一种酸的溶液中的电解液; （2）浸入电解液中的阴极; 和（3）浸在电解质溶液中并与阴极隔开的阳极。 描述了各种阳极材料，包括玻璃碳，网状玻璃碳，编织碳纤维，铅和铅合金。 一旦电解质被氧化形成锰（III）离子的亚稳态络合物，可以将平板状塑料与亚稳态络合物接触以蚀刻可镀塑料。 此外，在将可镀塑料与亚稳态复合物接触之前，也可以对可镀塑料进行预处理步骤以调节塑料表面。

公开(公告)号：EP2815002A4

公开(公告)日：2015-10-14

申请号：EP13749579

申请日：2013-02-05

申请人： MACDERMID ACUMEN INC

发明人： HINGLEY STACEY ,  TOOTH RICHARD ,  CLARKE TERENCE

IPC分类号： C25D3/06 ,  C25D21/12

CPC分类号： C25D3/06 ,  C25D21/12

摘要： 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.