Aluminum Containing Patents (Class 106/404)
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Patent number: 6676741Abstract: Methods and apparatus are provided for uniformly depositing a coating material from a vaporization source onto a powdered substrate material to form a thin coalescence film of the coating material that smoothly replicates the surface microstructure of the substrate material. The coating material is uniformly deposited on the substrate material to form optical interference pigment particles. The thin film enhances the hiding power and color gamut of the substrate material. Physical vapor deposition process are used for depositing the film on the substrate material. The apparatus and systems employed in forming the coated particles utilize vibrating bed coaters, vibrating conveyor coaters, or coating towers. These allow the powdered substrate material to be uniformly exposed to the coating material vapor during the coating process.Type: GrantFiled: February 20, 2003Date of Patent: January 13, 2004Assignee: Flex Products, Inc.Inventors: Roger W. Phillips, Vladimir Raksha
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Patent number: 6676538Abstract: A golf ball bearing a mark having superior durability and glittering in a gold color is provided. The mark is obtained by printing with use of the ink having a resin and a metal powder including particles each having a main body of copper and a copper-zinc alloy portion on a surface of the main body. The preferable metal powder has a mean particle diameter of at most 50 &mgr;m.Type: GrantFiled: August 1, 2001Date of Patent: January 13, 2004Assignee: Sumitomo Rubber Industries LimitedInventors: Kazuhiko Isogawa, Takashi Sasaki
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Patent number: 6666913Abstract: The main object is to provide a water-based ink composition which is not only superior in hiding power but also has satisfactory writing properties. This invention relates to a water-based ink composition comprising a powder consisting of inorganic particles comprising at least one of aluminum oxide, titanium dioxide and boron nitride and water.Type: GrantFiled: September 5, 2001Date of Patent: December 23, 2003Assignee: Sakura Color Products CorporationInventors: Norihiro Hirano, Norimasa Kurihara, Atsushi Sudo, Yasuyuki Yoshimura
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Patent number: 6648957Abstract: Multilayer pearl lustre pigment on the basis of a platelet-shaped substrate comprising a material of low refractive index in the range from 1.35 to 1.8, which comprises at least (i) one first layer comprising a material having a refractive index of more than 1.8, (ii) optionally, a second layer comprising a material of low refractive index in the range from 1.35 to 1.8, (iii) a semitransparent metal layer which is applied to the substrate or to the layers (i) or (ii), and (iv) if desired, an aftercoating, the substrate being platelet-shaped silicon dioxide, aluminium oxide, boron oxide or magnesium fluoride.Type: GrantFiled: December 4, 2001Date of Patent: November 18, 2003Assignee: Merck Patent GmbHInventors: Stephanie Andes, Gerald Fuchs-Pohl, Gerhard Pfaff
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Publication number: 20030209169Abstract: The present invention relates to multilayer pigments based on platelet-shaped metal substrates coated with two or more metal oxide layers by a one-pot process in an exclusively aqueous medium. The invention further relates to the use of the multilayer pigments in paints, varnishes, printing inks, including security printing inks, plastics, ceramic materials and cosmetic and for the laser formulations marking of plastics.Type: ApplicationFiled: June 4, 2003Publication date: November 13, 2003Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Stephanie Andes, Sabine George, Margarete Herbski, Peter Reynders, Reiner Vogt, Johann Dietz, Helge Kniess, Elke Steudel
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Patent number: 6632276Abstract: The invention relates to electrically conductive pigments which have, as conductive layer on a substrate, a tin oxide layer doped with phosphorus.Type: GrantFiled: November 28, 1997Date of Patent: October 14, 2003Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventor: Reiner Vogt
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Patent number: 6632275Abstract: The present invention relates to pigment mixtures consisting of at least two components, component A being Sio2 flakes coated with one or more metal oxides and/or metals and component B being special-effect pigments, and to their use in varnishes, paints, printing inks, masterbatches, plastics and cosmetic formulations.Type: GrantFiled: November 28, 2000Date of Patent: October 14, 2003Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Sabine Schoen, Reiner Vogt, Norbert Schül, Karl Osterried, Johann Munz
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Publication number: 20030177950Abstract: The present invention relates to pigment mixtures consisting of at least two components, component A being SiO2 flakes coated with one or more metal oxides and/or metals and component B being special-effect pigments, and to their use in varnishes, paints, printing inks, masterbatches, plastics and cosmetic formulations.Type: ApplicationFiled: March 24, 2003Publication date: September 25, 2003Applicant: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Sabine Schoen, Reiner Vogt, Norbert Schul, Karl Osterried, Johann Munz
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Publication number: 20030177949Abstract: Methods and apparatus are provided for uniformly depositing a coating material from a vaporization source onto a powdered substrate material to form a thin coalescence film of the coating material that smoothly replicates the surface microstructure of the substrate material. The coating material is uniformly deposited on the substrate material to form optical interference pigment particles. The thin film enhances the hiding power and color gamut of the substrate material. Physical vapor deposition process are used for depositing the film on the substrate material. The apparatus and systems employed in forming the coated particles utilize vibrating bed coaters, vibrating conveyor coaters, or coating towers. These allow the powdered substrate material to be uniformly exposed to the coating material vapor during the coating process.Type: ApplicationFiled: February 20, 2003Publication date: September 25, 2003Applicant: Flex Products, Inc.Inventors: Roger W. Phillips, Vladimir Raksha
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Patent number: 6620232Abstract: Chemically bound ceramic system, the binder phase of which essentially consisting of a cement based system, which material comprises one or more expansion compensating additives adapted to give the material dimension stable long time properties.Type: GrantFiled: April 12, 2001Date of Patent: September 16, 2003Assignee: Doxa AktiebolagInventors: Lars Kraft, Leif Hermansson
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Publication number: 20030150359Abstract: A powder coating material or powder coating dispersion (powder slurry) comprising at least one hydrophilic effect pigment, and the use thereof.Type: ApplicationFiled: November 12, 2002Publication date: August 14, 2003Inventor: Walter Lassmann
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Patent number: 6602339Abstract: An aluminum pigment excellent in water resistance useful in water-based metallic paints, water-based metallic inks and the like, is provided. The pigment is excellent in water resistance and has a coating derived from peroxo-polymolibdate represented by the compositional formula: MoO3.mH2O2.nH2O or MoO3-m(O2)m.nH2O where Mo is molybdenum, O is oxygen, 0≦m≦1 and 1≦n≦2 and also includes at least one amine selected from alkylamine, allylamine, arylamine, alkanolamine or alkoxylamine.Type: GrantFiled: June 13, 2002Date of Patent: August 5, 2003Assignee: Toyo Aluminium Kabushiki KaishaInventors: Yoshiki Hashizume, Takayuki Nakao
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Publication number: 20030121453Abstract: A matting agent for paint which achieves a great matting effect even when added in a small amount to an energy beam-hardening paint compound and an energy beam-hardening paint compound containing the matting agent for paint. While micronized silica is stirred in a mixer, a solution consisting of chloroform and beeswax dissolved therein is sprayed on the micronized silica with a sprayer. The micronized silica after the spraying is stirred in the mixer for ten minutes and is dried in a dryer at a temperature of 70° C. After pulverizing aggregates using a compact air mill, a matting agent comprising 100 weight parts of micronized silica coated with 12 weight parts of beeswax is obtained. When dispersed in an epoxy acrylate resin-based paint, the matting agent achieves a great matting effect with a substantially small addition compared with a conventional matting agent.Type: ApplicationFiled: December 18, 2002Publication date: July 3, 2003Inventors: Shiro Iwahashi, Ryou Okada
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Publication number: 20030108680Abstract: A contiguous duplex microstructured material comprises a nanostructured material having two structural states, for example, a duplex microstructured coating. One state comprises substantially nanostructured features, while the second state substantially comprises microstructured features. A duplex nanostructured coating can be made by thermal spraying a reconstituted nanostructured material onto a substrate under conditions effective to form a coating comprising more than one structural state.Type: ApplicationFiled: July 9, 2002Publication date: June 12, 2003Inventors: Maurice Gell, Tongsan D. Xiao, Leon Shaw, Eric Jordan, Xiangliang Jiang
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Publication number: 20030109617Abstract: A modified filler used in the making of paper or the like, preparation of the filler and its use. The modified filler comprises a filler known as such, e.g. calcium carbonate, kaolin, talc, titanium dioxide, sodium silicate and aluminiumtrihydrate or their mixture, and a hydrophobic polymer made of polymerisable monomers, which is added to the filler as a polymer dispersion or a polymer solution.Type: ApplicationFiled: October 17, 2002Publication date: June 12, 2003Inventors: Mari Niinikoski, Olof Malmstrom, Markku Nurminen, Kenneth Sundberg, Claes Zetter
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Patent number: 6572784Abstract: Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of the layers on one side of the core layer, or can be formed with encapsulating coatings around the core layer. The coating structure of the flakes and foils includes a core layer, a dielectric layer overlying the core layer, and an absorber layer overlying the dielectric layer. A luminescent material is incorporated into the flakes or foils as a separate layer or as at least part of one or more of the other layers. The pigment flakes and foils exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.Type: GrantFiled: November 17, 2000Date of Patent: June 3, 2003Assignee: Flex Products, Inc.Inventors: Paul G. Coombs, Jaroslaw Zieba, Richard A. Bradley, Jr., Christopher W. Lantman, Thomas Mayer, Roger W. Phillips, Stacey A. Yamanaka
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Publication number: 20030097957Abstract: Metal pigment particles are treated with a product resulting from the reaction between an organic phosphonic acid with an amine having at least one organic group containing at least six carbon atoms to inhibit their reactivity to water. The treated metal particles can be used in coating and ink compositions. Additionally, the treated metal particles can be used to formulate pastes and dispersions that are provided to a coatings manufacturer.Type: ApplicationFiled: October 31, 2001Publication date: May 29, 2003Applicant: Silberline Manufacturing Co., Inc.Inventors: H. Taylor Lamborn, Robert E. Souerwine, craig B. Keemer
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Patent number: 6565770Abstract: Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. A luminescent material coating structure is provided which partially covers or encapsulates a color-shifting pigment flake, or covers the outer surface of a foil. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of the layers on one side of the core layer, or can be formed with encapsulating coatings around the core layer. The coating structure of the flakes and foils includes a core layer, a dielectric layer overlying the core layer, and an absorber layer overlying the dielectric layer. The luminescent pigment flakes and foils exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.Type: GrantFiled: November 17, 2000Date of Patent: May 20, 2003Assignee: Flex Products, Inc.Inventors: Thomas Mayer, Stacey A. Yamanaka, Jaroslaw Zieba
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Publication number: 20030089271Abstract: The main object is to provide a water-based ink composition which is not only superior in hiding power but also has satisfactory writing properties. This invention relates to a water-based ink composition comprising a powder consisting of inorganic particles comprising at least one of aluminum oxide, titanium dioxide and boron nitride and water.Type: ApplicationFiled: September 5, 2001Publication date: May 15, 2003Inventors: Norihiro Hirano, Norimasa Kurihara, Atsushi Sudo, Yasuyuki Yoshimura
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Publication number: 20030066457Abstract: An aluminum pigment excellent in water resistance useful in water metallic paints, water metallic inks and the like is provided.Type: ApplicationFiled: June 13, 2002Publication date: April 10, 2003Inventors: Yoshiki Hashizume, Takayuki Nakao
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Patent number: 6537933Abstract: Silk clothes for protecting affected parts (incised wound, burn, tumor, bedsore, etc.) which also contribute to the prevention of suppurating. These clothes are composed of a knitted woven silk fabric or non-woven silk fabric (silk floss, etc.) containing either Sasa veitchii or a parabenzoic acid ester or both of the same and being adhered to a non-woven fabric made of cellulose, etc.Type: GrantFiled: November 29, 2000Date of Patent: March 25, 2003Inventor: Yuzo Tsuchida
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Publication number: 20030037895Abstract: The invention concerns sulfate-containing and aluminum-containing pigments having pseudoboehmitic structural units, their manufacture and use for paper making. In the manufacture of paper, these pigments produce surprisingly good printing results with inkjet color printers and are also simple to manufacture.Type: ApplicationFiled: August 28, 2002Publication date: February 27, 2003Inventors: Rudolf Lunkenheimer, Hein-Willi Weih, Hasan Ulubay, Bernd Schutzius
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Patent number: 6524381Abstract: Methods and apparatus are provided for uniformly depositing a coating material from a vaporization source onto a powdered substrate material to form a thin coalescence film of the coating material that smoothly replicates the surface microstructure of the substrate material. The coating material is uniformly deposited on the substrate material to form optical interference pigment particles. The thin film enhances the hiding power and color gamut of the substrate material. Physical vapor deposition processes are used for depositing the film on the substrate material. The apparatus and systems employed in forming the coated particles utilize vibrating bed coaters, vibrating conveyor coaters, or coating towers. These allow the powdered substrate material to be uniformly exposed to the coating material vapor during the coating process.Type: GrantFiled: March 31, 2000Date of Patent: February 25, 2003Assignee: Flex Products, Inc.Inventors: Roger W. Phillips, Vladimir Raksha
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Publication number: 20030033962Abstract: A number of stable mixtures are disclosed containing specific combinations and levels of extender pigments and thickeners. These stable mixtures may be employed, inter alia, as a mixture in a method of making paints using prepaints or as a conventional component in a coating, such as a paint, or other end-use where opacifying pigments are employed.Type: ApplicationFiled: August 8, 2002Publication date: February 20, 2003Inventors: Edwin Hugh Nungesser, Jerry William Washel, John Michael Friel
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Patent number: 6521038Abstract: A near-infrared reflecting composite pigment comprises a near-infrared non-absorbing colorant and a white pigment coated with the near-infrared non-absorbing pigment. The near-infrared reflecting composite pigment can be produced by mixing a colorant dispersion, in which the near-infrared non-absorbing colorant is dispersed in a liquid medium, with the white pigment in a form selected from powder or a dispersion and then drying the resultant mixture. A near-infrared reflecting coating agent comprises as a coloring agent the near-infrared reflecting composite pigment. A near-infrared reflecting material comprises a base material coated on a surface thereof with the near-infrared reflecting coating agent.Type: GrantFiled: November 28, 2001Date of Patent: February 18, 2003Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Hiromitsu Yanagimoto, Yoshiyuki Zama, Hisao Okamoto, Tohru Hosoda, Yoshio Abe, Michiei Nakamura
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Patent number: 6521036Abstract: The invention relates to optically variable pigments (10) having a color shift between two distinct colours of any of the known designs. The pigments having incorporated a totally reflecting layer made by physical vapour deposition from aluminum alloy (11). This pigment exhibits excellent chromaticity, corrosion resistance, particularly in any kind of coating composition or printing ink and especially when water is present.Type: GrantFiled: February 20, 2001Date of Patent: February 18, 2003Assignee: SICPA Holding S.A.Inventors: Anton Bleikolm, Olivier Rozumek, Edgar Muller
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Patent number: 6508290Abstract: The invention relates to a method of preparing an aluminium-containing iron oxide nucleus with an &agr;-FeOOH crystal structure from FeCl2. This nucleus is a suitable starting material for the preparation of iron oxide yellow and for use as a yellow coloring pigment.Type: GrantFiled: August 31, 2001Date of Patent: January 21, 2003Assignee: Bayer AktiengesellschaftInventor: Ulrich Meisen
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Patent number: 6508877Abstract: The present invention relates to a process for the production of an aluminum-containing iron oxide crystallization nucleus with a &agr;-FeOOH crystal structure from FeCl2. This nucleus is suitable as starting material for the production of iron oxide red (&agr;-Fe2O3) via &agr;-FeOOH as an intermediate product.Type: GrantFiled: August 31, 2001Date of Patent: January 21, 2003Assignee: Bayer AktiengesellschaftInventor: Ulrich Meisen
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Publication number: 20030005859Abstract: The invention relates to multilayered luster pigments based on metallic substrates, which are completely surrounded by a plurality of layers, where these layers comprise at least one layer pack (A) having a colorless dielectric layer of a material with a refractive index n of ≦1.8, and a colorless dielectric layer of a material with a refractive index n of >1.8, and a selectively or non-selectively absorbent layer (B), and to a process for their production, and to their use.Type: ApplicationFiled: June 12, 2002Publication date: January 9, 2003Applicant: Merck Patent GmbHInventors: Stephanie Andes, Gerald Fuchs-Pohl, Martin Friz, Gerhard Pfaff, Siegfried Raabe, Michael Uhlig
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Patent number: 6503304Abstract: A flowable and pumpable aqueous semifinished product of gassing stability for the production of paints and lacquers comprises water, a pre-stabilized metallic pigment and an anticorrosive pigment.Type: GrantFiled: January 16, 2001Date of Patent: January 7, 2003Assignee: ECKART-Werke Standard-Bronzepulver-Werke Carl Eckart GmbH & Co.Inventors: Andreas Korn, Robert Maul
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Patent number: 6488757Abstract: The present invention relates to a pearl luster pigment on the basis of a platelet-shaped substrate coated with metal oxides and a top layer which is located on the metal oxide layer and can possess a multilayer structure, comprising a first layer, containing a hydroxide or oxide hydrate of the elements aluminum or silicon, a second layer, containing at least one hydroxide or oxide hydrate of the elements aluminum, silicon, cerium or zirconium, with the exception of the hydroxide or oxide hydrate which forms the first layer, and a third layer, containing at least one organic hydrophobic coupling agent. The present invention also relates to a preparation process and the use of pigments in paints, inks, plastics, coatings and cosmetics.Type: GrantFiled: November 6, 2001Date of Patent: December 3, 2002Assignee: Merck Patent Gesellschaft mit beschraenker HaftungInventor: Ralf Glausch
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Patent number: 6488758Abstract: The invention relates to a pearl luster pigment which may possess a first, inner layer, consisting of a platelet-shaped substrate, a second layer, comprising one or more metal oxides, the first and second layers forming a calcined base pigment, a third layer, comprising the corresponding uncalcined oxide, hydroxide or oxide hydrate of the oxide of the second layer, a fourth layer, comprising oxides, hydroxides and/or oxide hydrates of silicon or aluminum, a fifth layer, comprising oxides, hydroxides and/or oxide hydrates of silicon, aluminum, zirconium and/or cerium, this layer differing from the fourth layer, and a sixth layer, comprising one or more organofunctional coupling reagents. The present invention relates to also a preparation process, and the use of the pigments in paints, inks, plastics, coatings and cosmetics.Type: GrantFiled: November 6, 2001Date of Patent: December 3, 2002Assignee: Merck Patent Gesellschaft mit beschraenkter HaftungInventors: Ralf Glausch, Marita Jekel
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Patent number: 6464769Abstract: A method of manufacturing metallic, especially aluminum flake pigments comprises comminuting metallic flake particles in an inert solvent such as mineral spirit and in-line screening of the slurry thus formed in at least two in-line cylindrical rotary screens with different mesh size. The screening system is fully enclosed to avoid solvent emissions. The finished product has consistent flake particle size distribution with brighter metallic finishes than conventionally produced products.Type: GrantFiled: April 3, 2001Date of Patent: October 15, 2002Assignees: US Aluminum Inc., Shamrock Aluminium Limited, Canbro INCInventors: Arun Kumar Chattopadhyay, Talal Soufanati, Michel Moffatt, Thomas Aquinas Barry, Samir Sanyal
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Publication number: 20020145212Abstract: A mixture as described herein and a process for forming a coherent refractory mass on a surface of a refractory comprised of at least one silicon compound, the process including providing a mixture comprised of combustible particles including silicon particles, refractory particles of one or a plurality of substances which constitute a major portion by weight of the mixture, and particles of another substance or precursor thereof which are nonmetallic and which cause the incorporation of silica, formed by the combustion of silicon, into a crystalline lattice within the coherent refractory mass; and projecting the mixture against the surface of a refractory, simultaneously with oxygen, so that the combustible particles react in an exothermic manner with the projected oxygen and release sufficient heat to form the refractory mass under the action of heat of combustion.Type: ApplicationFiled: March 18, 2002Publication date: October 10, 2002Inventors: Jean-Pierre Meynckens, Leon-Philippe Mottet
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Patent number: 6454847Abstract: The present invention provides an aluminum pigment having a high grade of optical characteristics, such as a high brightness and a high flip-flop effect. In particular, an aluminum pigment having a mean particle diameter d50 of 5-35 &mgr;m, a ratio of the mean particle diameter d50 (&mgr;m) to a mean thickness t (&mgr;m) of 30-90, and a mean surface roughness Ra of 20 nm or less, is disclosed. A method for manufacturing the aluminum pigment of the invention is also provided.Type: GrantFiled: October 20, 2000Date of Patent: September 24, 2002Assignee: Asahi Kasei Metals LimitedInventors: Kiyoshi Iri, Atsutoshi Sugimoto
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Publication number: 20020124776Abstract: A porosifying, solidification-accelerating additive for binding agent building materials consisting of Al2O3, 50-90%; MgO, 4-20%; SiO2, 0.5-15%; AlN, 0.1-5%; Fe2O3, 0.1-5%; CaO, 0.1-5%; F, 0.1-5%; Na2O, 0.1-5%; K2O, 0.1-2%; as well as in the form of metallic particles: Al, 0.1-10%; Si, 0.1-3%; Fe, 0.1-3%; balance in total maximum, 5%; annealing losses, 0.1-15%; and of mineral main constituents in the form of corumdum (&agr;-Al2O3) and spinel (MgO×Al2O3), wherein the metallic aluminum particles are enveloped by mineral transition modifications from aluminum hydroxide (Al2O3×3H2O) to &agr;-aluminum oxide, the powder comprises a particle size of at least 90% smaller than 500 &mgr;m, and the BET surface of the powder amounts to at least 10 m2/g.Type: ApplicationFiled: August 15, 2001Publication date: September 12, 2002Inventors: Reinhard Feige, Gerhard Merker
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Patent number: 6440208Abstract: A color effect material is composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with copper, zinc, an alloy of copper, or an alloy of zinc first layer which acts as a reflector to light directed thereon, a second layer encapsulating the first layer in which the second layer provides an optically variable reflection of light impinging thereon and a third layer encapsulating the second layer and being selectively transparent to light directed thereon.Type: GrantFiled: November 6, 2000Date of Patent: August 27, 2002Assignee: Engelhard CorporationInventors: James D. Christie, Daniel S. Fuller, Curtis J. Zimmermann
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Patent number: 6419736Abstract: The present invention relates to rare earth metal sulfide or oxysulfide pigments and yttrium sulfide or oxysulfide pigments based on platelet-shaped substrates.Type: GrantFiled: November 13, 2000Date of Patent: July 16, 2002Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Gerhard Pfaff, Matthias Kuntz, Reiner Vogt, Rodney Riddle, Sabine Schoen, Wolf-Dietrich Weber
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Publication number: 20020088373Abstract: An initial solids mixture for a later organic coating, such as pigmented coatings, films, priming coats, etc., e.g., for a coil coating method in which an initial solids mixture is applied to a substrate, e.g., broad strip, and this is thereby pre-coated, wherein the initial solids mixture includes, as additive particles, boron carbide and/or silicon carbide and/or compounds of transition elements or lanthanides, the electrical conductivity of which is selected to be in the metallic range (&sgr;>102 1/&OHgr;cm and &sgr;<107 1/&OHgr;cm), during the later coating, the additive particles have a continuous physical connection in at least one spatial direction.Type: ApplicationFiled: November 21, 2001Publication date: July 11, 2002Inventor: Anita Marten
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Patent number: 6409814Abstract: Pigment preparations, having a solid content of 10 to 60 wt-%, obtainable by mixing together, in the presence of at least one water-miscible organic solvent, pigments coated with a silicon-oxygen-matrix with at least one resin having carboxyl groups sufficient to provide an acid value of 10 to 100 mg KOH/g resin and having an number average molecular mass of 500 to 5000, wherein the ratio of pigment to resin is in the range of 1:0.3 to 1:10, can be used for the preparation of water-borne effect base coats with shear stability.Type: GrantFiled: April 19, 2000Date of Patent: June 25, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Werner Bosch, Georg Antonio Cuddemi, Frank Mueller, Marco Taschner
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Patent number: 6409815Abstract: Surface-modified conductive pigment obtainable by partial coating of a conductive pigment with an organic modifying agent. The modifying agent is an organometallic compound of the elements silicon, tin, titanium, zirconium or aluminum. The pigment is prepared by dispersing a conductive pigment, subsequently adding the modifying agent, if appropriate as a mixture with a solvent, to the pigment dispersion, and in particular in an amount such that the powder electrical conductance of the partly coated conductive pigment is in the range between 80% of the starting value and 10−7 S, removing the solvent present, if appropriate, with further agitation and heating of the pigment to 100° C. and finally drying the partly coated pigment.Type: GrantFiled: April 5, 1995Date of Patent: June 25, 2002Assignee: Merck Patent Gesellschaft mit beschraenkter HaftungInventors: Alfred Hennemann, Manfred Kieser
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Patent number: 6398862Abstract: The invention relates to a non-dusting homogeneous pigment preparation notable in that it comprises at least 40% by weight of one or more pearl lustre pigments.Type: GrantFiled: August 30, 1999Date of Patent: June 4, 2002Assignee: Merck Patent Gesellschaft mit Beschraenkter HaftungInventors: Wolfgang Hechler, Gerhard Herget, Brigitte Husseini
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Patent number: 6398861Abstract: There is provided a process for preparing a low- or non-dusting substantially non-volatile (preferably highly light reflective) metal flake pigment composition, which comprises ball milling atomized metal powder in a milling fluid substantially comprised of water, in the presence of one or more corrosion inhibitors and a substance which acts as a lubricant for the milling process. Optionally, the paste may be formed into granules for easy storage. Preferred metal pigments are aluminum or gold bronze and in one embodiment the metal pigment is aluminum, the lubricant is oleic acid and the corrosion inhibitor is a phosphate ester having a polyethylene oxide side chain. Agent(s) having both lubricating and corrosion inhibiting properties are preferred as additives.Type: GrantFiled: April 13, 1999Date of Patent: June 4, 2002Assignee: Silberline LimitedInventor: Jonathan Joseph Whistler Knox
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Publication number: 20020056399Abstract: The present invention relates to a pigment preparation comprising a mixture of coated and/or uncoated SiO2 flakes, one or more special-effect pigments, and a phosphate derivative, and to the use thereof, especially in printing inks.Type: ApplicationFiled: October 19, 2001Publication date: May 16, 2002Applicant: Merck Patent GmbHInventors: Sabine Schoen, Reiner Vogt, Norbert Schul, Karl Osterried, Gerhard Herget
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Patent number: 6387498Abstract: A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers on opposing sides of the reflector layer. The resulting core flake section is a very thin three-layered structure that exhibits a uniaxial compressive strength much greater than a corresponding uniaxial tensile strength. This structure provides the benefits of rigidity and brittle fracture during manufacturing and application processes, which ultimately provides favorable planar and specular reflectance characteristics for the pigment in the visible wavelength range. A variety of outer coating layers can be formed around the core flake sections, such as various dielectric and absorber layers having thicknesses dependent upon the desired optical characteristics of the pigment.Type: GrantFiled: April 7, 2000Date of Patent: May 14, 2002Assignee: Flex Products, Inc.Inventors: Kent E. Coulter, Thomas Mayer, Roger W. Phillips, John S. Matteucci
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Patent number: 6383638Abstract: A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers on opposing sides of the reflector layer. The resulting core flake section is a very thin three-layered structure that exhibits a uniaxial compressive strength much greater than a corresponding uniaxial tensile strength. This structure provides the benefits of rigidity and brittle fracture during manufacturing and application processes, which ultimately provides favorable planar and specular reflectance characteristics for the pigment in the visible wavelength range. A variety of outer coating layers can be formed around the core flake sections, such as various dielectric and absorber layers having thicknesses dependent upon the desired optical characteristics of the pigment.Type: GrantFiled: October 13, 2000Date of Patent: May 7, 2002Assignee: Flex Products, Inc.Inventors: Kent E. Coulter, Thomas Mayer, Roger W. Phillips, John S. Matteucci
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Patent number: 6379445Abstract: Paints and printing inks are disclosed which contain carbon black as the pigment. The dispersion and storage stability of printing inks and paints may be improved by using carbon blacks containing silicon. The rheological behavior of the paints is improved by silicon-doping of the carbon blacks used. Paints having a reduced solvent content are consequently obtainable.Type: GrantFiled: August 23, 2000Date of Patent: April 30, 2002Assignee: Degussa AGInventors: Karin Otto, Peter Stroh
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Publication number: 20020033117Abstract: A polychromic ink composition depending on viewing angle comprises 0.5 to 40% by weight of cholesteric liquid crystal polymer particles whose maximum particle diameter is 1 to 200 &mgr;m, 1.0 to 30.0% by weight of binder resins, 0.05 to 20% by weight of pigments with a deep-colored coloring matter whose average particle diameter is 0.01 to 0.5 &mgr;m, 0.01 to 5.0% by weight of a shear-thinning property imparting agent, and water with respect to the total amount of the ink composition.Type: ApplicationFiled: April 13, 2001Publication date: March 21, 2002Applicant: Sakura Color Products CorporationInventors: Hiroshi Inoue, Satoshi Maruyama, Norihiro Hirano, Hidetoshi Fukuo, Naoshi Murata, Shoko Matsumoto, Kaoru Matsumoto
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Publication number: 20020005144Abstract: A method of manufacturing metallic, especially aluminum flake pigments comprises comminuting metallic flake particles in an inert solvent such as mineral spirit and in-line screening of the slurry thus formed in at least two in-line cylindrical rotary screens with different mesh size. The screening system is fully enclosed to avoid solvent emissions. The finished product has consistent flake particle size distribution with brighter metallic finishes than conventionally produced products.Type: ApplicationFiled: April 3, 2001Publication date: January 17, 2002Inventors: Arun Kumar Chattopadhyay, Talal Soufanati, Michel Moffatt, Thomas Aquinas Barry, Samir Sanyal
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Patent number: 6331326Abstract: A coating film which has no problems in its film properties and is superior in hiding power for hiding sand scratches on the substrate and exhibiting a continuous plated metal-like appearance is formed in a stable manner, by coating the substrate with a primer (A) and/or a first metallic paint (B) containing non-leafing type aluminum flakes (a) having thicknesses in the range from 0.1 to 1 &mgr;m and an average particle size of 1-60 &mgr;m and, then, coating with a second metallic paint (C) containing small, thin metal flakes (b) having thicknesses not greater than 0.08 &mgr;m and an average particle size of 5-40 &mgr;m.Type: GrantFiled: December 7, 1999Date of Patent: December 18, 2001Assignee: BASF NOF Coatings Co., Ltd.Inventors: Takeshi Tsunoda, Shinji Mitsumune