Formation of organic electro-grafted films on the surface of electrically conductive or semi-conductive surfaces

    公开(公告)号:US10851466B2

    公开(公告)日:2020-12-01

    申请号:US15821951

    申请日:2017-11-24

    申请人: ALCHIMEDICS

    发明人: Christophe Bureau

    摘要: The invention relates to a method for grafting an organic film onto an electically conductive or semiconductive surface by electro-reduction of a solution, wherein the solution comprises one diazonium salt and one monomer bearing at least one chain polymerizable functional group. During the electrolyzing process, at least one protocole consisting of an electrical polarization of the surface by applying a variable potential over at least a range of values which are more cathodic that the reduction or peak potential of all diazonium salts in said solution is applied. The invention also relates to an electrically conducting or semiconducting surface obtained by implementing this method.The invention further relates to electrolytic compositions.

    Aqueous dip-coating composition for electroconductive substrates, comprising both dissolved and undissolved bismuth

    公开(公告)号:US10407578B2

    公开(公告)日:2019-09-10

    申请号:US15037362

    申请日:2013-11-18

    摘要: The present invention relates to an aqueous coating composition (A) having a pH in a range from 4.0 to 6.5 and comprising at least one cathodically depositable binder (A1), a total amount of at least 130 ppm of Bi, based on the total weight of (A), including at least 30 ppm of Bi in a form (A3) in solution in (A) and at least 100 ppm of Bi in a form not in solution in (A), and at least one at least bidentate complexing agent (A5) suitable for complexing Bi, (A5) being present in (A) in a fraction of at least 5 mol %, based on the total amount of the Bi present in (A), for at least partly coating an electrically conductive substrate with an electrocoat material, to a method for producing (A), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, to an at least partly coated substrate obtainable by this method, and to a method for setting and/or maintaining the concentration of component (A3) and/or (A4) in the coating composition (A) during the coating method.

    Detection method for electroplating process

    公开(公告)号:US10345254B2

    公开(公告)日:2019-07-09

    申请号:US15689195

    申请日:2017-08-29

    摘要: Detection methods for an electroplating process are provided. A detection method includes immersing a substrate into an electrolyte solution to perform an electroplating process. The electrolyte solution includes an additive agent. The detection method also includes immersing a detection device into the electrolyte solution. The detection method further includes applying a first alternating current (AC) voltage or direct current (DC) voltage to the detection device to detect the concentration of the additive agent. In addition, the detection method includes applying a combination of a second AC voltage and a second DC voltage to the detection device to inspect the electrolyte solution. An impurity is detected in the electrolyte solution. The detection method also includes replacing the electrolyte solution containing the impurity with another electrolyte solution.

    AQUEOUS DIP-COATING COMPOSITION FOR ELECTROCONDUCTIVE SUBSTRATES, COMPRISING BISMUTH AND A PHOSPHORUS-CONTAINING, AMINE-BLOCKED COMPOUND
    10.
    发明申请
    AQUEOUS DIP-COATING COMPOSITION FOR ELECTROCONDUCTIVE SUBSTRATES, COMPRISING BISMUTH AND A PHOSPHORUS-CONTAINING, AMINE-BLOCKED COMPOUND 有权
    用于包含双相和含有磷酸盐的胺基封端化合物的电极基材的水性DIP涂层组合物

    公开(公告)号:US20160369114A1

    公开(公告)日:2016-12-22

    申请号:US15103118

    申请日:2013-12-10

    摘要: The present invention relates to an aqueous coating composition (A) comprising at least one cathodically depositable binder (A1) and optionally at least one crosslinking agent (A2), for at least partly coating an electrically conductive substrate with an electrocoat material, where (A) comprises a total amount of at least 30 ppm of bismuth, based on the total weight of (A), and additionally at least one phosphorus-containing compound (P) blocked with at least one amine of the general formula (I), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, and to an at least partly coated substrate obtainable by this method.

    摘要翻译: 本发明涉及包含至少一种阴极可沉积的粘合剂(A1)和任选的至少一种交联剂(A2)的水性涂料组合物(A),用于至少部分地用电泳涂料涂覆导电基材,其中(A )包含基于(A)的总重量的总量至少30ppm的铋,以及至少一种用至少一种通式(I)的胺封端的含磷化合物(P),至少一种含有通式 使用(A)至少部分地用电涂层材料涂覆导电基材,到相应的涂布方法,以及通过该方法可获得的至少部分涂覆的基材。