MACDERMID ACUMEN, INC.
|MACDERMID ACUMEN, INC. Patent applications|
|Patent application number||Title||Published|
|20140318983||Regeneration of Etch Solutions Containing Trivalent Manganese in Acid Media - A method of regenerating an etch solution comprising a metastable complex of manganese(III) ions in a strong acid is described in which at least a portion of the manganese(III) ions in the metastable complex have been destabilized, causing them to disproportionate into manganese dioxide and manganese(II) ions. The method includes the steps of i) adding an effective amount of a reducing agent to the solution; ii) allowing the reducing agent to react with the solution to cause manganese dioxide to dissolve; and (iii) applying an electrical current to regenerate manganese(III) ions in the solution.||10-30-2014|
|20140256083||High Speed Copper Plating Process - A copper electrolyte comprising a copper nitrate salt is described. The electrolyte is suitable for use in a light induced plating process for metallizing contacts in a photovoltaic solar cell. A method of metallizing an electrical contact in a photovoltaic solar cell using the copper electrolyte is also described.||09-11-2014|
|20140163198||Method of Producing Polymeric Phenazonium Compounds - A process of making a polymeric phenazonium compound having the general formula:||06-12-2014|
|20140134338||Treatment of Plastic Surfaces After Etching in Nitric Acid Containing Media - 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.||05-15-2014|
|20130186862||Electrolytic Generation of Manganese (III) Ions in Strong Sulfuric Acid - 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.||07-25-2013|
|20130186861||Electrolytic Generation of Manganese (III) Ions in Strong Sulfuric Acid Using an Improved Anode - 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.||07-25-2013|
|20130136869||Method for Improving Plating on Non-Conductive Substrates - A method of treating a laser-activated thermoplastic substrate having a metal compound dispersed therein is described. The substrate is contacted with an aqueous composition comprising: (i) a thiol functional organic compound; (ii) an ethoxylated alcohol surfactant; and (iii) xanthan gum. By use of the treatment composition, when the substrate is subsequently laser-activated and plated by electroless plating, extraneous plating of the substrate is substantially eliminated.||05-30-2013|
|20130078754||Light Induced Plating of Metals on Silicon Photovoltaic Cells - A method and composition for plating metal contacts on photovoltaic solar cells is described. The cell is immersed in an aqueous bath containing platable metal ions and a solubilizing agent for aluminum or aluminum alloy ions from the back side of the solar cell. The cell is then exposed to light, causing the two sides of the cell to become oppositely charged. The metal ions are plated without requiring an external electrical contact.||03-28-2013|
Patent applications by MACDERMID ACUMEN, INC.