Contains An Atom Of Sulfur, Selenium Or Tellurium Patents (Class 148/266)
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Patent number: 11851780Abstract: The present invention relates to an aqueous passivation solution having a pH in the range from 5.4 to 7.2, the solution including trivalent chromium ions, and formate anions and/or oxalate anions as complexing agents for said trivalent chromium ions, in which the trivalent chromium ions with respect to all formate anions together with all oxalate anions form a molar ratio in the range from 1:15 to 1:400.Type: GrantFiled: August 15, 2022Date of Patent: December 26, 2023Assignee: Atotech Deutschland Gmbh & Co. KGInventors: Robert RĂ¼ther, Olaf Kurtz, Joko Setyadi-Lie, Tse-Cheen Foong
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Patent number: 11634819Abstract: Provided is a solution composition for steel sheet surface treatment, comprising 30 wt % to 60 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B); 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resisting agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; and 27.3 wt % to 64.2 wt % of water, a zinc-based plated steel sheet surface-treated with the same, and a manufacturing method therefor, the zinc-based plated steel sheet surface-treated with the solution composition for steel sheet surface treatment containing trivalent chromium may have an excellent effect on corrosion resistance, blackening resistance, fingerprint resistance, oil resistance, and alkali resistance.Type: GrantFiled: April 28, 2022Date of Patent: April 25, 2023Assignees: POSCO, NOROO COIL COATINGS CO., LTD.Inventors: Soo-Hyoun Cho, Dae-Chul Bae, Dong-Yun Kim, Chang-Hyun Park
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Patent number: 11508633Abstract: A conductive structure, includes: a plurality of conductive layers; a plurality of conductive pillars being formed on the plurality of conductive layers, respectively; and a molding compound laterally coating the plurality of conductive pillars. Each of the plurality of conductive pillars is a taper-shaped conductive pillar, and is tapered from the conductive layers.Type: GrantFiled: May 28, 2020Date of Patent: November 22, 2022Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Hung-Jui Kuo, Hui-Jung Tsai, Tai-Min Chang, Chia-Wei Wang
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Patent number: 11346003Abstract: Provided is a solution composition for steel sheet surface treatment, comprising 30 wt % to 60 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B); 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resisting agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; and 27.3 wt % to 64.2 wt % of water, a zinc-based plated steel sheet surface-treated with the same, and a manufacturing method therefor, the zinc-based plated steel sheet surface-treated with the solution composition for steel sheet surface treatment containing trivalent chromium may have an excellent effect on corrosion resistance, blackening resistance, fingerprint resistance, oil resistance, and alkali resistance.Type: GrantFiled: June 14, 2017Date of Patent: May 31, 2022Assignees: POSCO, NOROO COIL COATINGS CO., LTD.Inventors: Soo-Hyoun Cho, Dae-Chul Bae, Dong-Yun Kim, Chang-Hyun Park
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Patent number: 10822705Abstract: Provided is a surface-treating solution composition, a zinc-based plated steel sheet surface-treated using the same, and a method for producing the same, wherein the surface-treatment solution composition includes: 10 wt % to 20 wt % of a trivalent chromium compound containing chromium phosphate (A) and chromium nitrate (B), the content ratio thereof, A/(A+B), satisfying 0.3 to 0.6; 20 wt % to 40 wt % of a silane-based sol-gel resin in which three types of silane compounds are crosslinked; 0.2 wt % to 0.4 wt % of a rust-inhibiting and corrosion-resistant agent; 0.1 wt % to 0.3 wt % of a molybdenum-based compound; 5 wt % to 10 wt % of a water-soluble cationic urethane resin; 0.5 wt % to 2.0 wt % of a silane coupling agent; 0.5 wt % to 2.0 wt % of an Al compound; and 25.3 wt % to 63.7 wt % of water.Type: GrantFiled: September 29, 2017Date of Patent: November 3, 2020Assignee: POSCOInventors: Soo-Hyoun Cho, Won-Ho Son, Chang-Hoon Choi
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Patent number: 9328423Abstract: The object of the present invention is to provide a method for forming a coating on the surface of an aluminum or aluminum alloy using a trivalent chromate solution which dose not contain any harmful hexavalent chromium, in which the coating has an excellent corrosion resistance and adhesion with paints. The present invention provides a hexavalent chromium free trivalent chromate solution for an aluminum or aluminum alloy, in which the concentration of a trivalent chromium is in the range of from 0.01 to 100 g/L, the concentration of a metal selected from the group consisting of zinc, cobalt, nickel and a combination thereof is in the range of from 0.01 to 100 g/L and the concentration of a fluorine is in the range of from 0.01 to 50 g/L.Type: GrantFiled: June 9, 2006Date of Patent: May 3, 2016Assignee: DIPSOL CHEMICALS CO., LTD.Inventor: Akira Hashimoto
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Patent number: 8075949Abstract: A method of production of conductive particles able to suppress growth of the conductive particles at the firing stage, able to effectively prevent spheroidization and electrode disconnection, able to effectively suppress a drop in electrostatic capacity, and able to efficiently produce core particles covered by thin coating layers without abnormal segregation of the coating layer metal particularly even when the internal electrode layers are reduced in thickness. A method of producing conductive particles comprising cores 51 having nickel as their main ingredients and coating layers 52 covering their surroundings. A core powder, a water-soluble metal salt containing a metal or alloy forming the coating layers 52, and a surfactant (or water-soluble polymer compound) are mixed to deposite by reduction a metal or alloy for forming the coating layers 52 on the outer surfaces of the core powder.Type: GrantFiled: September 28, 2005Date of Patent: December 13, 2011Assignee: TDK CorporationInventors: Kazutaka Suzuki, Shigeki Sato
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Patent number: 8070886Abstract: A treatment solution that is used to form a chemical coating of trivalent chromium free of hexavalent chromium having uniform black appearance and good corrosion resistance on the surface of zinc or zinc alloy and that attains prolongation of treatment bath lifetime; and a method of forming a black trivalent chromium chemical coating on the surface of zinc or zinc alloy. There is provided a treatment solution for forming of a black trivalent chromium chemical coating on zinc or zinc alloy, comprising trivalent chromium ions, a chelating agent capable of forming a water-soluble complex with trivalent chromium, zinc ions, a sulfur compound and phosphite ions.Type: GrantFiled: August 15, 2008Date of Patent: December 6, 2011Assignee: Dipsol Chemicals Co., Ltd.Inventors: Manabu Inoue, Satoshi Yuasa
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Patent number: 7914627Abstract: A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises: trivalent chromium and oxalic acid in a molar ratio ranging from 0.5/1 to 1.5/1, wherein the trivalent chromium is present in the form of water-soluble complex with oxalic acid; and cobalt ions, which do not form a hardly soluble metal salt with oxalic acid and are stably present in the processing solution without causing any precipitation; wherein the solution reacts with zinc when bringing it into contact with the zinc or zinc alloy plating to form a hexavalent chromium free, corrosion resistant, trivalent chromate conversion film containing zinc, chromium, cobalt, oxalic acid and silicon on the plating.Type: GrantFiled: May 21, 2010Date of Patent: March 29, 2011Assignee: Dipsol Chemicals Co., Ltd.Inventors: Katsuhide Oshima, Shigemi Tanaka, Manabu Inoue, Tomitaka Yamamoto
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Publication number: 20100132843Abstract: A low sludge trivalent chromium based conversion coating bath is provided which forms corrosion resistant coatings on aluminum and aluminum alloys by immersion in aqueous solutions containing trivalent chromium ions and fluorometallate ions followed by optional rinsing. Trivalent chromium coated aluminum also serves as an effective base for paint primers.Type: ApplicationFiled: May 10, 2007Publication date: June 3, 2010Inventor: Kirk Kramer
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Patent number: 6342554Abstract: Disclosed herein is a surface treatment agent for steel, characterized in that, said agent contains 0.1-15% by mass of chromium sulfate and 10-40% by mass of a binder resin containing butyral resin or a mixture of butyral resin with another resin which is compatible with butyral resin.Type: GrantFiled: May 10, 1999Date of Patent: January 29, 2002Assignees: Sumitomo Metal Industries, Ltd., Shinto Paint Co.Inventors: Hirofumi Kishikawa, Masato Yamashita, Atsumu Kanda, Hiroshi Ono
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Patent number: 5876517Abstract: Process for finishing zinc, zinc alloy or cadmium surfaces which consists in bringing the components to be treated into contact first with an acidic chromate-plating bath based on chromium, cobalt and silver salts and then with a top coat bath comprising a colloidal silica, a corrosion inhibitor, a complexing agent, a surfactant and a black dye.Type: GrantFiled: October 28, 1997Date of Patent: March 2, 1999Assignee: Atotech Deutschland GmbHInventor: Eliane Jeannier
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Patent number: 5769968Abstract: A method of making a developer support by forming an amorphous film on a metal substrate where the film is chromium, zinc with oxygen or hydrogen.Type: GrantFiled: August 26, 1996Date of Patent: June 23, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Masaki Sutoh, Shinichiro Fukunaga
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Patent number: 5735972Abstract: A black chromate-treatment solution for Zn-Ni alloy plated film comprises 1 to 100 g/l of hexavalent chromium, 1 to 100 g/l of hydrochloric acid residues and/or sulfuric acid residues, 1 to 100 g/l of nitric acid residues and 1 to 100 g/l of at least one metal selected from the group consisting of iron, nickel, cobalt and copper. The chromate-treatment solution permits the formation of a uniform black chromate conversion film on a Zn-Ni alloy plated film having an Ni content ranging from 8 to 20% by weight without using any silver ions in a substantial amount and the resulting black film is excellent in corrosion resistance.Type: GrantFiled: June 28, 1996Date of Patent: April 7, 1998Assignee: Dipsol Chemicals Co., Ltd.Inventors: Seiji Kishikawa, Takashi Yamamoto
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Patent number: 5565042Abstract: A chemically stable black chromate solution capable of forming an anticorrosive black chromate film on a Zn-Ni alloy plating is provided, the components being easily soluble in the solution. The black chromate solution comprises 1 to 50 g/l of hexavalent chromium; 1 to 50 g/l of sulfate ion; 0.05 to 1.0 g/l of soluble silver; 0.5 to 100 g/l of a sulfonated carboxylic acid selected from the group consisting of sulfo-aromatic carboxylic acids having 7 to 15 carbon atoms, sulfonated aliphatic dicarboxylic acids having 3 to 10 carbon atoms and salts thereof; and a balance of water, the solution having a pH of 0.5 to 2.5.Type: GrantFiled: November 22, 1995Date of Patent: October 15, 1996Assignee: Dipsol Chemicals Co., Ltd.Inventors: Hitoshi Sakurai, Seiji Kishikawa, Tomitaka Yamamoto, Tadahiro Itoh
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Patent number: 5147597Abstract: The buildup of radioactive contaminants on the inside surface of light water reactor water systems is retarded by the use of a chromium coating of at least five hundred Angstroms on the surface exposed to the water system. The chromium coating is then passivated by exposure to an oxygen source for about five hours at a temperature between 150.degree. C. and 450.degree. C.Type: GrantFiled: April 9, 1991Date of Patent: September 15, 1992Assignee: Electric Power Research InstituteInventors: Roger L. A. Roofthooft, Roger H. Asay
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Patent number: 5080733Abstract: Chromate conversion coatings of improved corrosion resistance are produced through use of chromate conversion coating compositions containing alkane sulfonic acid.Type: GrantFiled: April 9, 1990Date of Patent: January 14, 1992Assignee: MacDermid, IncorporatedInventor: Ley Deresh
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Patent number: 4818727Abstract: A method for improving the corrosion resistance of aluminum in a semiconductor device. The step includes providing a semiconductor device having aluminum containing contact pads; attaching a leadframe to the contact pads; and applying sufficient zinc chromate in solution to the contact pads for a sufficient time and at a sufficient temperature to render said aluminum substantially resistant to corrosion.Type: GrantFiled: June 23, 1987Date of Patent: April 4, 1989Assignee: SGS-Thomson Microelectronics Inc.Inventor: Timothy E. Turner