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    • 12. 发明申请
    • GALVANIC METHODS OF ACCELERATING COPPER DISSOLUTION INTO SOLUTIONS CONTAINING NITROGEN COMPOUNDS
    • 将铜溶解加入到含有化合物的溶液中的气体方法
    • WO01051683A1
    • 2001-07-19
    • PCT/US2001/000089
    • 2001-01-03
    • C02F1/46C02F1/461C23F1/34C25C1/12C25D21/18C25C7/04B27K3/52C25F5/00
    • C23F1/34C02F1/4606C02F1/46176
    • Methods of dissolving copper at an accelerated rate into electrolytic solutions, such as solutions comprising nitrogen compounds, by supplying an anodic current to a copper or copper-containing metal that is in contact with an electrolytic solution comprising a nitrogen compound (such as 2-hydroxyethylamine and ethanolamine) and carbon dioxide. Anodic current may be provided by, for example, galvanic coupling with a material (e.g. silver, stainless steel,...) having a more positive reduction potential in the electrolytic solution (or given the system of electrolytic solutions) than copper, and/or by applying an impressed anodic current to the copper or copper-containing metal. Separate reaction vessels may be employed to house a first copper metal and a second cathode metal, as well as the electrolytic solutions associated with each. Copper-containing solutions thus formed are useful as biocidal fluids, for example, for treating wood or lumber and for water purification.
    • 通过向包含氮化合物的电解液(例如2-羟乙基胺)接触的铜或含铜金属提供阳极电流,将铜以加速速率溶解到电解溶液中,例如包含氮化合物的溶液的方法 和乙醇胺)和二氧化碳。 阳极电流可以通过例如与电解溶液(或给定电解溶液系统)比铜更正的还原电位的材料(例如银,不锈钢,...)进行电偶合,和/ 或通过向铜或含铜金属施加印刷的阳极电流。 可以使用单独的反应容器来容纳第一铜金属和第二阴极金属,以及与每个相关联的电解溶液。 如此形成的含铜溶液可用作杀生物流体,例如用于处理木材或木材并用于水净化。
    • 16. 发明申请
    • ETCHING OF SOLAR CELL MATERIALS
    • 太阳能电池材料的蚀刻
    • WO2005013321A3
    • 2006-02-02
    • PCT/US2004023198
    • 2004-07-19
    • SUNPOWER CORPROSE DOUGLAS HURALWONG PONGSTHORNSMITH DAVID D
    • ROSE DOUGLAS HURALWONG PONGSTHORNSMITH DAVID D
    • H01L20060101H01L31/00H01L31/18C23F1/00C23F1/18C23F1/20C23F1/34C23F1/36
    • H01L31/022425H01L31/02008H01L31/18
    • A solar cell is fabricated by etching one or more of its layers without substantially etching another layer of the solar cell. In one embodiment, a copper layer in the solar cell is etched (506) without substantially etching a topmost metallic layer comprising tin. For example, an etchant comprising sulfuric acid and hydrogen peroxide may be employed to etch the copper layer selective to the tin layer. A particular example of the aforementioned etchant is a Co-Bra Etch® etchant modified to comprise about 1% by volume of sulfuric acid, about 4% by volume of phosphoric acid, and about 2% by volume of stabilized hydrogen peroxide. In one embodiment, an aluminum layer in the solar cell is etched (514) without substantially etching the tin layer. For example, an etchant comprising potassium hydroxide may be employed to etch the aluminum layer without substantially etching the tin layer.
    • 通过蚀刻其一个或多个层而不基本上蚀刻太阳能电池的另一层来制造太阳能电池。 在一个实施例中,在基本上蚀刻包含锡的最顶层的金属层的同时蚀刻太阳能电池中的铜层(506)。 例如,可以使用包含硫酸和过氧化氢的蚀刻剂来蚀刻对锡层有选择性的铜层。 上述蚀刻剂的一个具体实例是改性为包含约1体积%的硫酸,约4体积%的磷酸和约2体积%的稳定的过氧化氢的Co-Bra Etch蚀刻剂。 在一个实施例中,蚀刻(514)太阳能电池中的铝层而基本上不蚀刻锡层。 例如,可以使用包含氢氧化钾的蚀刻剂来蚀刻铝层而基本上不蚀刻锡层。
    • 20. 发明申请
    • AN AQUEOUS BASIC ETCHING COMPOSITION FOR THE TREATMENT OF SURFACES OF METAL SUBSTRATES
    • WO2021250182A1
    • 2021-12-16
    • PCT/EP2021/065663
    • 2021-06-10
    • ATOTECH DEUTSCHLAND GMBH
    • KOHLMANN, LarsBRUNNER, Heiko
    • C23C22/34C23C22/40C23C22/46C23F1/34C23F1/40C23F1/46
    • The present invention is directed to an aqueous basic etching composition for the treatment of surfaces of metal substrates, the composition comprising: (a) functionalized urea, biuret and guanidine derivatives and/or salts thereof selected from the group comprising compounds having formulae (I) and (II) and/or salts thereof, wherein X and Y are independently selected from the group comprising oxygen, NRR' and NR5, wherein R, R' and R5 are independently selected from the group comprising R1, hydrogen, polyethylene glycols, aromatic compounds, and C1-C4 alkyl, wherein the aromatic compounds and C1-C4 alkyl optionally comprise at least one substituent selected as OR6, wherein R6 is selected from the group comprising hydrogen and C1-C4 alkyl, wherein X and Y can be identical or different; R1 and R2 are independently selected from the group comprising hydrogen, alkyl compounds, amines, and nitrogen-comprising heteroaromatic compounds, wherein R1 and R2 can be identical or different, with the proviso that R1 cannot be hydrogen, and with the proviso that in compounds having formula (I) R1 cannot be hydrogen or alkyl compound if X is oxygen; m is an integer from 1 to 4, preferably 3; and n is an integer from 0 to 8, preferably 2 to 4; wherein m and n can be identical or different; (b) an oxidizing agent for oxidizing the metals of the metal surface to be treated; and wherein the aqueous basic etching composition comprises a pH from 7.1 to 14.