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贵金属国外部分
METALS AND ALLOYS
COSMETIC PIGMENT COMPOSITION CONTAINING GOLD OR SILVER NANO-PARTICLES
Publication number: WO2007011103
Abstract
The present invention relates to a cosmetic pigment composition exhibiting colors in the visible region, which comprises an effective amount of nanoparticles or a mixture of two or more nanoparticles selected from the group consisting of (a) gold nanoparticles exhibiting red color; (b) silver nanoparticles exhibiting yellow color; (c) gold-silver alloy nanoparticles exhibiting flame color; and (d) gold nanoparticles exhibiting blue color, and a color cosmetic composition and a color lotion comprising the pigment composition. According to the present invention, it is possible to prepare pigments exhibiting various colors in the visible region using gold or silver nanoparticles, and a cosmetic pigment composition which can exhibit various colors by mixing the pigments in various compositional ratios, in which precipitation or agglomeration of particles does not occur, and whose color can be maintained for a long time. Also, since the pigment of the present invention is not harmful to the human body unlike conventional metal pigments, and contains gold or silver that is beneficial to health, the pigment can be used in various applications as functional raw materials.
Methods and articles for gold nanoparticle production
Publication number: US2007051202
Abstract
An example embodiment of a method for making gold nanoparticles includes steps of reacting a gold salt with a phosphino amino acid. Example phosphino amino acids include trimers, with a particular example being a trimeric amino acid conjugate containing one phosphino group. In an example method of the invention, the gold nanoparticles may be produced in timer periods of less than about 3 minutes, and at temperatures of less than about 30 DEG C. Other methods of the invention are directed to methods for stabilizing gold nanoparticles, and to methods for making gold nanochains.
Surface-stabilized gold nanocatalysts
Publication number: US2006293175
Abstract
A surface-stabilized gold nanocatalyst includes a solid support having stabilizing surfaces for supporting gold nanoparticles, and a plurality of gold nanoparticles having an average particle size of less than 8 nm disposed on the stabilizing surfaces. The surface-stabilized gold nanocatalyst provides enhanced stability, such as at high temperature under oxygen containing environments. In one embodiment, the solid support is a multi-layer support comprising at least a first layer having a second layer providing the stabilizing surfaces disposed thereon, the first and second layer being chemically distinct.
SYSTEMS, COMPOSITIONS, AND METHODS FOR LOCAL IMAGING AND TREATMENT OF PAIN
Publication number: WO2007035906
Abstract
Pain factors are labeled with targeted agents or markers delivered into the body. The labeled pain factors are imaged with appropriate imaging tools in a manner allowing selective identification and localization of areas of pain source or transmission. The labeled pain factors allow spatial differentiation in the imaging sufficient to specify the location of the pain so as to drive therapeutic decisions and techniques in order to treat the pain. Pain factors labeled and imaged in this manner may include one or more of nerve factors, blood vessel factors, cellular factors, and inflammation factors. Labeled markers may include for example radioactive materials (e.g. tritiated or iodinated molecules) or other materials such as metal (e.g. gold) nanoparticles. Intermediary binding materials may be used, such as for example bi-specific antibodies. Therapeutic components of the system and method include for example localized energy delivery or ablation treatments, or local drug or other chemical delivery. Locations containing pain factor selectively bound by targeted agents are selectively treated with directed energy into a region containing the targeted agent bound to the pain factor.
METHOD FOR THE SELECTIVE PRODUCTION OF DIHYDROXYACETONE FROM GLYCERIN, AND METHOD FOR THE PRODUCTION OF A METAL CATALYST USED FOR THE SELECTIVE OXIDATION OF GLYCERIN
Publication number: WO2007033807
Abstract
The invention relates to a method for the oxidation of a secondary hydroxy group of an organic compound to a keto group in the presence of at least one primary hydroxy group of said organic compound, especially for producing dihydroxyacetone (DHA) from glycerin. According to said method, the organic compound, particularly the glycerin, is reacted with oxygen in the presence of a supported metal catalyst, especially a multi-metal catalyst, comprising gold and platinum and other optional metals catalyzing oxidation of said organic compound, particularly glycerin, in an alkaline aqueous system so as to form an organic compound containing a keto group and at least one primary hydroxy group, especially of dihydroxyacetone. Preferably, the supported oxidation catalysts used in said method are obtained by carrying out the following steps: a) at least one metal salt and/or at least one acid of a metal which can catalytically oxidize hydroxyl groups to aldehyde groups or keto groups is reduced using at least one reducing stabilizer according to the Sol method in an alkaline aqueous system; b) a supporting material is contacted with the alkaline aqueous system and supports of the supporting material; c) the solid moiety is separated from the liquid portion; d) the separated solid moiety is washed; and e) the washed solid moiety is tempered. The invention further relates to the supported oxidation catalysts obtained according to the disclosed method.
Method of forming an electrical contact
Publication number: US2007066042
Abstract
In a test system, a silicon interconnect is provided that can accommodate a packaged part, such as a Land Grid Array (LGA) package. The interconnect can be made by etching a silicon substrate to form projections therefrom; forming an insulation or passivation layer through deposition or growth; depositing a seed layer over the insulation layer; depositing a metal layer over the seed layer; and etching contact members from the seed and metal layers using a single mask step. In a preferred embodiment, the metal layer is coated with another metal layer that matches the metal of the packaged part's electrical communication nodes. In one embodiment, the contact surfaces of the silicon contact are plated in gold and are planar. Included within the scope of the current invention are at least one method of testing an LGA package and at least one method of allowing electrical communication with a packaged part.
LED package
Publication number: US2007063213
Abstract
A package allowing agile deployment of the location of each LED chip includes a heat slug to secure multiple LED chips, two lead frames, a conducting area extending along the edge of the heat slug, and a non-conductive material that connects the heat slug and the lead frame for those multiple LED chips to connect to the conducting area by means of a gold wire without being subject to the presence of the lead frame.
Precious metal solder
Publication number: US2007051436
Abstract
Platinum, silver and gold solder compositions for repairing, assembling, or sizing jewelry. Platinum compositions having about 90% to about 95% by weight platinum. Silver compositions having at least 92.5% by weight silver. Gold solder compositions having about 25% to about 91.6% gold. The platinum and silver solder compositions further consisting of about 8.3% to about 75% by weight of an alloy consisting essentially of gallium, indium and copper in respective ratios of 6:3:1. The gold solder compositions further consisting of about 2% to about 14% by weight of an alloy consisting essentially of gallium, indium, and copper in respective ratios of 6:3:1. The melting temperature ranges of the respective solder compositions are from about 1300 DEG C. to about 1500 DEG C. for platinum, from about 1000 DEG F. to about 1400 DEG F. for silver, and from about 1100 DEG F. to about 1550 DEG F.
SPUTTERING SYSTEM USING SILVER-BASED ALLOY
Publication number: US2007062810
Abstract
An alloy based on silver is provided, which can be used for reflective layers with a reflection factor of >90% in the visible spectral range of daylight and which exhibits a high resistance to corrosion in sulfur-containing atmospheres. The alloy contains about 0.01 to 5 wt % indium and/or tin and/or antimony and/or bismuth and the remainder silver.
Enhancing silver tarnish-resistance
Publication number: US2007039665
Abstract
An alkanethiol, alkyl thioglycollate, dialkyl sulfide or dialkyl disulfide may be used to surface treat of an alloy of silver containing an amount of germanium that is effective to reduce firestain and/or tarnishing. The treatment has been found to further reduce tarnishing of the alloy such that a sample can be supported close above a 20% solution of ammonium polysulphide for at least 30 minutes while retaining a generally untarnished appearance. The treatment may be carried out at the end of manufacturing a shaped article to give rise to an article that will preserve its untarnished appearance both during transit to a point of sale but during subsequent display for an extended period. The invention therefore also includes a method for manufacturing a tarnish-resistant silver article, which comprises the steps of forming a shaped article of an alloy of silver containing an amount of germanium that is effective to reduce firestain and/or tarnishing, surface treating the article with an alkanethiol, alkyl thioglycollate, dialkyl sulphide or dialkyl disulphide; and introducing the article into packaging. Also disclosed for use in treating an alloy of silver as aforesaid is a water-based composition comprising a treatment agent selected from an alkanethiol, alkyl thioglycollate, dialkyl sulfide or dialkyl disulfide and a mixture of an anionic surfactant and an amphoteric or nonionic surfactant in a concentration that is effective to solubilise the treatment agent.
SILVER WIRE
Publication number: WO2007023308
Abstract
This invention relates to silver alloy fibres or wire of sufficiently small diameter that they have properties similar to conventional textile fibres, to structures e.g. woven, non-woven or knitted products from said fibres and to their manufacture. The fibres may be of Ag Cu Ge alloy and of diameter less than 200 m. The invention relates to articles e.g woven, non-woven, knitted, needle-punched twisted, linked or braided articles comprising fibres as aforesaid either alone or combination with other e.g. natural or synthetic organic fibres for a variety of applications including filtration or catalyst support, formation of composite materials and formation of textile products.
Electrosurgical electrode with silver
Publication number: US2007055226
Abstract
An improved electrosurgical electrode for treating diseased tissue and lesions. The electrosurgical electrode when used to sever tissue is characterized by reduced heating and reduced tissue alteration at the severed surfaces. The active end of the electrode may be the point of a needle or the sharpened edge of a blade or have other configurations. The electrode composition preferably has a core metal of mainly molybdenum clad with a cladding metal of silver with a small amount of germanium and indium. The cladding tightly bonds the silver-alloy cladding to the mainly molybdenum core metal. For specially configured electrodes, the core metal may be omitted.
Oxide-Dispersion Strengthened Platinum Material
TANAKA KIKINZOKU KOGYO KKEuropean Appl. 1,712,646
An oxide-dispersion strengthened material (1) formed from Pt or alloys of Pt-Rh, Pt-Au, Pt-Rh-Au or Pt-Ir is claimed, which is stable in use at high temperatures and has excellent weldability. Dispersed additive metal particles (2) are selected from Zr, Ca, Y or Sm and have average diameter of 0.2 ?m or less, average interparticle distance 0.01–2.7 ?m and concentration 0.01–0.5 wt.%. The oxidation rate of (2) is 50–100%, and the concentration of unbound O within (1) is ≤ 100 ppm.
ELECTRODEPOSITION AND SURFACE COATINGS
Platinum Aluminide Coatings for Turbine Components
HONEYWELL INT. INCU.S. Appl. 2006/0,222,776
Turbine components such as vanes or blades are coated with an environment-resistant Pt aluminide coating (1) by cold gas-dynamic spraying a powder material containing Al, Pt and at least one other material chosen from Ni, Cr, Hf, Si, Y, Re, Zr, Co and Ta. After coating, at least one thermal diffusion treatment such as a hot isostatic pressing process, vacuum heat treatment, or heat treatment in inert atmosphere, is applied to metallurgically homogenise the coating. (1) contains (in wt.%): ≤ 50 Pt, ? 12–30 Al, ? 2–25 Cr, ? 0.1–5 Hf, ? 1–5 Si, ? 0.1–3 Y, ? 0.1–3 Zr, and the balance consists of Ni.
APPARATUS AND TECHNIQUE
Ruthenium Complex Dye for Oxygen Sensing
ROSEMOUNT ANAL. INCU.S. Appl. 2006/0,228,804
A Ru complex luminescence dye (1) for O sensing consists of Ru(II)-tris(4,7-diphenyl-1,10-phenanthroline) modified by covalently bonding long-chain hydrophobic organic groups containing C12H25 to the ligands. (1) have increased solubility in non-polar organic solvents such as toluene. Optical O sensors include a source of excitation illumination, a sensing layer containing (1) which receives excitation illumination and generates luminescence based on the concentration of O, and a luminescence sensor.
Platinum Apparatus for Manufacturing Glass
FURUYA KINZOKU KKJapanese Appl. 2006-169,085
Glass manufacturing apparatus is made of Pt or Pt alloy with a surface roughness of Rmax < 4 ?m and Ra ≤ 0.1 ?m. This gives reduced contact resistance between the Pt surface and the molten glass, leading to reduced friction and improved wettability. Wrinkles and surface deformation caused by expansion and shrinkage at high temperature are suppressed, and contamination of glass by Pt particles during manufacture is inhibited.
JOINING
Brazing Diamond Using a Metal Interlayer
SMITH INT.British Appl. 2,426,223
A cutting element consists of a substrate, a thermally stable polycrystalline diamond layer, a metal interlayer of Mo or Ni and a braze joint (1) securing diamond to substrate. (1) is a NiPdCr braze alloy, and may be coated with carbide, Ru, W or Ta. (1) has shear strength > 60,000 psi and thickness < 0.003″.
HETEROGENEOUS CATALYSIS
Reforming Catalyst Containing Rhodium
JOHNSON MATTHEY PLCBritish Appl. 2,424,196
A reforming catalyst (1) containing Rh or Rh-Pt particles, and including a promoter metal such as Ba, on a support material such as ceria or ceria and zirconia dispersed on an Al ion containing oxide is claimed. (1) can be used in a fuel processing system for reforming diesel or a diesel-type fuel. The atomic ratio of Rh or Rh-Pt to Ba is between 50:1–1:5.
Alkane Aromatisation Using Platinum-Zeolite Catalyst
SAUDI BASIC IND. CORP INCEuropean Appl. 1,699,746
A Pt/ZSM-5 crystalline zeolite catalyst containing 0.05–5% Pt is used in aromatisation of 1–4 C alkanes to aromatics such as benzene, toluene and xylenes by a process such as a Cyclar-type process. Temperatures are between 350–650°C and pressures are 10–2000 kPa. A byproduct of the process is a light gas fraction containing ethane and methane, with a mole fraction ratio of ethane relative to methane between 2–10, which can be used as a feedstream for a cracker.
Membrane Apparatus and Production of Hydrogen
ROBERT GORDON UNIV.U.S. Appl. 2006/0,239,874
An apparatus and method for producing H2 gas, in particular synthesis gas, includes an α-alumina membrane treated with a TiO2 washcoat on one side and an active γ-alumina layer on the other. A metal catalyst, preferably Rh, is deposited within the pores of the alumina. Advantages include 100% conversion rates for O2, and separate feed streams enabling safe use of optimal ratios of O2 and methane. The synthesis gas can be produced from normally gaseous hydrocarbons obtained from remote oil wells, and converted to liquid hydrocarbons for transport.
Exhaust Gas Purifying Catalyst
CATALER CORPU.S. Appl. 2006/0,270,550
An exhaust gas purifying catalyst prevents alloying of precious metal particles even at high operating temperatures, to inhibit catalyst degradation. There is a substrate with a catalyst coating containing Rh (1), Pt and/or Pd (2), plus a refractory inorganic oxide. Weight ratio of (1):(2) is 1:0–1:1 in the upstream part relative to exhaust gas flow, and in the downstream part the weight of (2) is greater than that of (1). The upstream part is 60–94% of the total system volume.
Black Photocatalyst for Forming Hydrogen
TOKYO UNIV. SCI.Japanese Appl. 2006-167,652
A photocatalyst (1) for hydrolysis is capable of using visible light efficiently. (1) includes a solid solution of CuInS2 substituted with Ag or Ga to give Cu1–xAgxInS2 (0.4 ≤ x ≤ 0.6) or CuGa1–yInyS2 (0.7 ≤ y ≤ 0.9). Ru, Pt or Rh is present as a photocatalyst promoter. On irradiation with visible and near-IR light, (1) generates H2 by photocatalytic hydrolysis of an aqueous solution containing S compounds which include SO32? and S2?.
HOMOGENEOUS CATALYSIS
Rhodium Crosslinking Silicone Elastomers
WACKER-CHEMIE GmbHU.S. Patent 7,129,309
An addition-crosslinked silicone elastomer (1) is formed in the presence of at least one Rh or Ir hydrosilylation catalyst, such as Rh2(C8H15O2)4 or [IrCl(olefin)2]2, or a mixture. (1) can be made transparent and colourless, is flexible and is suitable for use as food and baking moulds in the food industry. The catalysed addition crosslinkable components display excellent pot life and good high-temperature cure.
Hydrogenation of an Unsaturated Compound
BASF AGU.S. Appl. 2006/0,247,459
A monoolefinically unsaturated compound bearing at least two functional groups selected from nitrile, carboxylic acid, carboxylic ester or carboxamide groups, is hydrogenated to a saturated compound in the presence of a homogeneous catalyst containing Rh, Ru, Pd, or Ni, preferably Rh, such as Cp*Rh(C2H4)2. The Rh-containing catalyst is used in the addition step to add terminal olefins bearing the required functional groups to a precursor compound, and the same catalyst is retained in the reaction mixture and used for the hydrogenation step. Hydrogenation is carried out at a partial H2 pressure of 0.1–200 bar, average mean residence time of 0.1–100 hours, and temperature of 30–160°C.
FUEL CELLS
Catalyst for Fuel Electrode
TANAKA KIKINZOKU KOGYO KKEuropean Appl. 1,710,856
A catalyst for a SPFC electrode is composed of fine precious metal particles (1), on an electrically conductive support such as C, in the weight ratio (1):C between 60:40–95:5. (1) may include Pt and Ru in the molar ratio 1:1–1:3, and have average particle diameter 3–10 nm. (1) also contain O, in the weight ratio (1):O between 86:14–96:4.
Fuel Cell Electrode Catalyst
GENERAL MOTORSWorld Appl. 2006/124,248
A PEMFC with improved durability is claimed, by replacing a C support in the cathode with Ti oxide mixed with electrically conductive particles of C. Pt particles are deposited on the Ti oxide support to give good O reduction capability and corrosion resistance in acid environment.
Electrode Catalyst Layer
NISSAN MOTOR CO LTDJapanese Appl. 2006-147,345
An electrode catalyst layer for a PEMFC includes a conductive catalyst support, a catalyst containing Pt and a proton conductive polymer. A Pt-capture agent (1) capable of scavenging Pt ions is included to prevent loss of Pt over time. (1) generates an organic Pt complex of coordination number 2–4.
ELECTRICAL AND ELECTRONIC ENGINEERING
Black Electrodes with Ruthenium
DU PONTEuropean Appl. 1,701,372
A black electrode (1) is formed by sintering at a temperature of 500–600°C after applying a Pb-free black conductive composition (2) to a substrate. (1) includes a crystallised glass component as a binder. (2) includes (in wt.%): 4–30 conductive particles of black RuO2, Pb-free black Ru-based polyoxides selected from Bi2Ru2O7, CuxBi2–xRuO7, GdBiRu2O7, or a mixture; 0–30 Pb-free non-conductive black oxide; and 10–50 Pb-free Bi-based glass binder.
Material for Probe Pins
TANAKA KIKINZOKU KOGYO KKU.S. Appl. 2006/0,197,542
Probe pins (1) are made of one or more elements selected from Pt, Ir, Ru, Os, Pd and Rh and have a Vickers hardness of ≥ 300. In particular, (1) may be formed from (in wt.%): 5–30 Rh and the balance Ir, or 5–40 Ir and the balance Pt. Optionally W, Ni and/or Co may be added, to give for example (in wt.%): 5–10 W, 5–30 Ni or 10–30 Co and the balance Pt. (1) are incorporated into probe cards.
Printed Circuit Board Using Ag-Pd Nanoparticles
H.-J. CHO et al.U.S. Appl. 2006/0,208,230
A conductive ink (1) is dispersed with Ag-Pd alloy nanoparticles containing 5–40 wt.% Pd, of diameter 1–50 nm. (1) is formed by dissolving Pd acetate and Ag acetate in sodium dodecyl sulfate aqueous solution and then heating. A PCB is manufactured by spraying (1) onto a substrate, for example by using ink-jet printing to form a pattern, and curing to form wiring. Migration of Ag ions is reduced, and competitive price and excellent conductivity are claimed.
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