Iron, Tungsten, Molybdenum, Or Cerium Compound Containing (fe, W, Mo, Ce) Patents (Class 106/439)
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Patent number: 6616745Abstract: A metal oxide-coated mica pearlescent pigment having a coating of copper chromite thereon is provided.Type: GrantFiled: July 17, 2002Date of Patent: September 9, 2003Assignee: Engelhard CorporationInventors: Samuel F. Narvarti, Mark E. Gall, Thomas V. Edwards, Frank A. Mazzella, William L. Howell, Jr.
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Patent number: 6610136Abstract: Aggregated mineral pigments (such as kaolin clay pigments) having a high surface area and useful in coating and filling compositions for ink jet printing media are manufactured by dry grinding an unground mineral composition starting material and then optionally acid treating the ground material.Type: GrantFiled: March 21, 2002Date of Patent: August 26, 2003Assignee: Thiele Kaolin CompanyInventors: Prakash B. Malla, Siva Devisetti
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Patent number: 6602934Abstract: This invention provides a multicolor coating composition comprising a vehicle and a metal oxide-coated silica flake pigment wherein a coating film resulting from baking of said coating composition and a coating film resulting from reheating of the former coating film under the same conditions as in said baking, followed by 10 minutes of standing at room temperature show a color difference of less than 0.5.Type: GrantFiled: July 21, 2000Date of Patent: August 5, 2003Assignee: Nippon Paint Co., Ltd.Inventor: Yoshikatsu Saito
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Patent number: 6599351Abstract: Anticorrosive white pigments useful for inhibiting corrosion include surface-coated TiO2 base bodies, preferably in the rutile modification, having Mn3(PO4)2 and one or more of the substances chosen from aluminum oxides, aluminum hydroxides, aluminum phosphates, aluminum hydrogen phosphates, aluminum dihydrogen phosphates and aluminum polyphosphates are precipitated on to the TiO2 base bodies. Mn3(PO4)2 may be replaced completely or partially by Zn3(PO4)2. Phosphates and/or oxides of cerium may be additionally deposited singly, or several of them may be deposited, on to the TiO2 base bodies.Type: GrantFiled: April 4, 2002Date of Patent: July 29, 2003Assignee: Metallgesellschaft AktiengesellschaftInventors: Thomas Rentschler, Fritz Muller, Jochen Winkler, Wolf-Rudiger Karl, Kirsten Fohr
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Patent number: 6596070Abstract: The present invention relates to interference pigments on the basis of multiply coated, platelet-shaped substrates which comprise at least one layer sequence comprising (A) a coating having a refractive index n≧2.0, (B) a colorless coating having a refractive index n≦1.8, and (C) a nonabsorbing coating of high refractive index, and, if desired, (D) an external protective layer.Type: GrantFiled: April 17, 2000Date of Patent: July 22, 2003Assignee: Merck Patent GesellschaftInventors: Christoph Schmidt, Gerhard Pfaff, Christina Schank, Sabine Schoen
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Publication number: 20030124076Abstract: Iron oxide-silicon dioxide-titanium dioxide mixed oxide is produced by burning vapourable compounds of iron, silicon and titanium together in a hydrogen/oxygen flame.Type: ApplicationFiled: December 9, 2002Publication date: July 3, 2003Applicant: Degussa AGInventors: Ina Hemme, Herbert Habermann, Steffen Hasenzahl
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Patent number: 6582506Abstract: Pigment flakes having cores preferably composed of resins, polymers, thermoplastics, and/or thermosets with colorant (pigment and/or dyes) deposited thereon, coating applications thereof, and a method for making pigment flakes which includes providing a core material, compounding the core material, processing the core material into uniform forms such as films, wires, thread with rectangular cross sections and bead strings, providing colorant material, vaporizing the colorant material, exposing a surface of core material to the vaporized colorant material to form a layer of colorant on thereon, and fracturing the resultant colorant layered core material into flakes.Type: GrantFiled: May 25, 2001Date of Patent: June 24, 2003Assignee: Hampden Papers, Inc.Inventor: Michael E. Archambeault
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Publication number: 20030097965Abstract: The present invention relates to coloured interference pigments based on multicoated, platelet-shaped substrates, which are distinguished in that they compriseType: ApplicationFiled: October 24, 2002Publication date: May 29, 2003Applicant: Merck Patent GmbHInventors: Lilia Heider, Manuela Loch, Nicole Schupp, Helge Kniess
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Patent number: 6547870Abstract: The invention relates to a non-dusting, homogeneous pigment preparation, comprising ≧40% by weight of one or more effect pigments, 0.5-60% by weight of a polyalkylene glycol and/or one or more polyalkylene glycol derivatives, 0-10% by weight of a redispersing auxiliary, 0-40% by weight of water or an organic solvent or solvent mixture, 0-40% by weight of at least one further hydroxyl-rich resin, and to its use as a precursor for printing inks.Type: GrantFiled: December 13, 2000Date of Patent: April 15, 2003Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Carsten Griessmann, Gerhard Herget
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Patent number: 6544327Abstract: The invention relates to a non-dusting homogeneous pigment preparation which is notable in that it comprises at least 40% by weight of one or more effect pigments, from 0.5 to 60% by weight of an aldehyde resin and/or ketonic resin and from 0.1 to 10% by weight of a redispersant.Type: GrantFiled: September 14, 2000Date of Patent: April 8, 2003Assignee: Merck Patent GmbHInventors: Carsten Griessmann, Wolfgang Hechler, Gerhard Herget
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Patent number: 6540824Abstract: The present invention provides a yellow pigment which contains a titanium-iron complex oxide of the pseudo-brookite type and produces a stabilized color more yellowish than conventionally and which is universally usable for coloring plastics, ceramics and coating compositions. The pigment of the invention is a titanium-iron complex oxide pigment which contains a pseudo-brookite complex oxide represented by the composition formula (M1-x•Fex)O•2TiO2 or the composition formula (Fe1-y•Aly)2O3•TiO2 wherein M is one of the bivalent metals Mg, Sr and Zn, the ratios of Fe, Al and M to Ti are in the respective ranges of 0.3≦Fe/Ti≦4.5, 0≦Al/Ti≦6.5 and 0≦M/Ti≦2.6, and x and y are in the respective ranges of 0≦x<1 and 0≦y<1.Type: GrantFiled: February 7, 2002Date of Patent: April 1, 2003Assignee: Ferro Enamels (Japan) LimitedInventors: Takayuki Suzuki, Koji Kataoka
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Patent number: 6533857Abstract: Luster pigments based on multiply coated reflecting platelet-shaped substrates and comprising at least one layer packet comprising A) a low refractive coating which selectively absorbs visible light and B) a reflective coating which is at least partially transparent to visible light and also, if desired, C) an outer protective layer.Type: GrantFiled: February 28, 2002Date of Patent: March 18, 2003Assignee: BASF AktiengesellschaftInventors: Raimund Schmid, Arno Böhm, Oliver Seeger, Norbert Mronga, Thorsten Clemens
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Publication number: 20030037705Abstract: A titanium dioxide powder/iron oxide mixed oxide which is prepared from FeCl3 and TiCl4 using a pyrogenic, especially a flame hydrolytic method. A further possibility is to coat pyrogenically, especially flame hydrolytically prepared titanium dioxide with iron oxide in aqueous dispersion. Both of these titanium dioxide powders which contain iron oxide may be used as a UV absorber in sunscreens.Type: ApplicationFiled: March 26, 2002Publication date: February 27, 2003Applicant: Dehussa AktiengesellschaftInventors: Werner Hartmann, Dieter Kerner
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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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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: 6500251Abstract: Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by solidification and hydrolysis of an aqueous solution of a thermally hydrolyzable titanium compound on a continuous belt, detachment of the resulting coat, coating of the resulting titanium dioxide platelets, with or without drying in between, by a wet method with, alternately, a metal oxide hydrate of high refractive index and a metal oxide hydrate of low refractive index by hydrolysis of the corresponding, water-soluble metal compounds, separation, drying and, if desired, calcining of the material obtained.Type: GrantFiled: March 9, 1999Date of Patent: December 31, 2002Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Stephanie Andes, Gerd Bauer, Günter Brenner, Dieter Brückner, Michael Schmelz, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff
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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: 6485556Abstract: Pearlescent pigment having a chromium coating thereon and an iron oxide coating on the chromium coating are intensely colored, almost phosphorescently colored, and are highly reflective.Type: GrantFiled: October 10, 2001Date of Patent: November 26, 2002Assignee: Engelhard CorporationInventor: Carmine V. DeLuca, Jr.
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Patent number: 6454848Abstract: The present invention provides new solid solutions having a corundum-hematite crystalline structure which are useful as inorganic color pigments. Solid solutions according to the present invention include a host component having a corundum-hematite crystalline structure which contains as guest components one or more elements from the group consisting of aluminum, antimony, bismuth, boron, chrome, cobalt, gallium, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, nickel, niobium, silicon, tin, titanium, vanadium, and zinc. Solid solutions according to the present invention are formed by thoroughly mixing compounds, usually metal oxides or precursors thereof, which contain the host and guest components and then calcining the compounds to form the solid solutions having the corundum-hematite crystalline structure. Some of the new solid solutions according to the present invention exhibit relatively low Y CIE tri-stimulus values and relatively high near infrared reflectance.Type: GrantFiled: December 20, 2000Date of Patent: September 24, 2002Assignee: Ferro CorporationInventors: Terrence R. Sliwinski, Richard A. Pipoly, Robert P. Blonski
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Patent number: 6451102Abstract: The present invention is directed to a process for producing a master batch of pigment, comprising mixing a pigment having a high aspect ratio, embedded in a material increasing bulk density of the pigment, with a plastic so as to produce a dispersion of pigment and plastic.Type: GrantFiled: May 4, 2000Date of Patent: September 17, 2002Assignee: Merck Patent GmbHInventors: Robin Hilder, Manfred Kieser
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Publication number: 20020121227Abstract: A titanium dioxide powder/iron oxide mixed oxide which is prepared from FeCl3 and TiCl4 using a pyrogenic, especially a flame hydrolytic method. A further possibility is to coat pyrogenically, especially flame hydrolytically prepared titanium dioxide with iron oxide in aqueous dispersion. Both of these titanium dioxide powders which contain iron oxide may be used as a UV absorber in sunscreens.Type: ApplicationFiled: December 14, 2001Publication date: September 5, 2002Applicant: Degussa AGInventors: Werner Hartmann, Dieter Kerner
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Patent number: 6432195Abstract: The invention relates to a non-dusting, homogeneous pigment preparation which is distinguished by the fact that it comprises at least 40% by weight of one or more effect pigments and 0.5-59.5% by weight of a modified colophony resin, based on the pigment preparation, and the use thereof, in particular for the production of dry preparations. The pigment preparation according to the invention and the dry preparations produced therefrom are particularly suitable for the pigmenting of paints, coatings, powder coatings, printing inks and plastics.Type: GrantFiled: May 14, 2001Date of Patent: August 13, 2002Assignees: Merck Patent Gesellschaft mit beschraenkter Haftung, Lackharzwerke Robert Kraemer GmbH & Co.Inventors: Thomas Rathschlag, Carsten Griessmann, Sabine Schoen, Werner Sarfert
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Patent number: 6406532Abstract: A titanium dioxide powder/iron oxide mixed oxide which is prepared from FeCl3 and TiCl4 using a pyrogenic, especially a flame hydrolytic method. A further possibility is to coat pyrogenically, especially flame hydrolytically prepared titanium dioxide with iron oxide in aqueous dispersion. Both of these titanium dioxide powders which contain iron oxide may be used as a UV absorber in sunscreens.Type: GrantFiled: September 14, 1995Date of Patent: June 18, 2002Assignee: Degussa AktiengesellschaftInventors: Werner Hartmann, Dieter Kerner
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Publication number: 20020061285Abstract: Iron oxide-silicon dioxide-titanium dioxide mixed oxide is produced by burning vapourable compounds of iron, silicon and titanium together in a hydrogen/oxygen flame. They are used as UV absorbers in cosmetics.Type: ApplicationFiled: September 21, 2001Publication date: May 23, 2002Inventors: Ina Hemme, Herbert Habermann, Steffen Hasenzahl
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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: 6361593Abstract: A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iron oxides and calcining the resulting product.Type: GrantFiled: May 9, 2001Date of Patent: March 26, 2002Assignee: Engelhard CorporationInventors: Carmine Vincent DeLuca, Jr., William P. Kurtenbach, Christine Mans
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Patent number: 6334893Abstract: The present invention relates to pigment mixtures containing at least two components component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being acicular or spherical colorants, and to their use in particular in varnishes, paints, printing inks, powder coating materials, plastics and cosmetic formulations.Type: GrantFiled: December 23, 1999Date of Patent: January 1, 2002Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Gerhard Pfaff, Sabine Schoen, Kaiman Shimizu
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Patent number: 6334892Abstract: Tungsten nickel-antimony-rutile mixed-phase pigments in which the nickel/tungsten molar ratio is ≧4 are used to color plastics, coating materials, printing inks and ceramic glazes.Type: GrantFiled: August 9, 2000Date of Patent: January 1, 2002Assignee: BASF AktiengesellschaftInventors: Hansulrich Reisacher, Uwe Mauthe
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Patent number: 6294011Abstract: The present invention is concerned with a titanium-, -and alkaline- or alkaline-earth-based compound, processes for the preparation thereof, and use thereof as a coloring pigment. The product of the invention is characterized in that it corresponds to formula (1) MxCeyTizOt wherein M represents an alkaline or an alkaline-earth, and x, y and z satisfy the following equations: 0.1≦y/z≦1.5, 1≦(x+z)/y≦15, x+y+z=1, (x+3y=4z)/2≦t≦(x+4y+4z)/2.Type: GrantFiled: February 23, 2000Date of Patent: September 25, 2001Inventors: Catherine Hedouin, Thierry Seguelong
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Patent number: 6290766Abstract: A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iron oxides and calcining the resulting product.Type: GrantFiled: February 24, 1999Date of Patent: September 18, 2001Assignee: Engelhard CorporationInventors: Carmine Vincent DeLuca, Jr., William P. Kurtenbach, Christine Mans
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Patent number: 6284032Abstract: Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by solidification and hydrolysis of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the resulting coat, coating of the resulting titanium dioxide platelets, with or without drying in between, by a wet method with, alternately, a metal oxide hydrate of high refractive index and a metal oxide hydrate of low refractive index by hydrolysis of the corresponding, water-soluble metal compounds, separation, drying and, if desired, calcining of the material obtained.Type: GrantFiled: January 11, 2001Date of Patent: September 4, 2001Assignee: Merck Patent GmbHInventors: Stephanie Andes, Gerd Bauer, Günter Brenner, Dieter Brückner, Michael Schmelz, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff
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Patent number: 6271157Abstract: Composition whereby ceramic manufactured articles, obtained by moulding a conventional ceramic mixture without added TiO2., are colored from yellow to orange, said composition consisting of an aqueous solution of inorganic compounds or organic complexes of titanium and chromium combined with antimony or tungsten or mixtures thereof, in quantities corresponding to 2 to 6% by wt. Ti, 3 to 12% Sb (or 4 to 14% tungsten) and 0.2 to 2.5% chromium.Type: GrantFiled: February 26, 1999Date of Patent: August 7, 2001Inventors: Graziano Vignali, Fabrizio Guizzardi
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Patent number: 6238471Abstract: Multilayer interference pigment having a blue mass tone, comprised of a platelet-shaped carrier material and a coating which is formed from (i) a first layer of a colorless, transparent metal oxide of high refractive index, (ii) a second layer of colorless, transparent metal oxide of low refractive index and (iii) a third, outer layer of cobalt aluminate, cobalt-containing glass, tungsten bronzes or cobalt oxide, it also being possible for the first and third layer to be swapped around.Type: GrantFiled: February 1, 1999Date of Patent: May 29, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Reiner Vogt, Hans-Dieter Brückner
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Patent number: 6238472Abstract: Colored pearl luster pigment consisting of a core of platelet shaped titanium dioxide and one or more layers of other metal oxides or metal oxide hydrates obtainable by solidifying an aqueous solution of a thermally hydrolyzable titanium compound on a continuous belt, detaching the resulting layer, coating the resulting titanium dioxide platelets, with or without drying in between, with one or more other metal oxides or metal oxide hydrates, for example Fe2O3, Fe3O4, FeOOH or Cr2O3, by a wet method, separating, drying and, if desired, calcining the material obtained.Type: GrantFiled: March 9, 1999Date of Patent: May 29, 2001Assignee: Merck Patent GmbHInventors: Stephanie Andes, Gerd Bauer, Günter Brenner, Dieter Brückner, Michael Schmelz, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff
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Publication number: 20010001174Abstract: Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by solidification and hydrolysis of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the resulting coat, coating of the resulting titanium dioxide platelets, with or without drying in between, by a wet method with, alternately, a metal oxide hydrate of high refractive index and a metal oxide hydrate of low refractive index by hydrolysis of the corresponding, water-soluble metal compounds, separation, drying and, if desired, calcining of the material obtained.Type: ApplicationFiled: January 11, 2001Publication date: May 17, 2001Applicant: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Stephanie Andes, Gerd Bauer, Gunter Brenner, Dieter Bruckner, Michael Schmelz, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff
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Patent number: 6200376Abstract: Heat-resistant yellow pigment particles of the present invention comprise a composite metal oxide containing Fe, Ti and Li, and comprising a crystal phase having a pseudobrookite-type structure. Such the heat-resistant yellow pigment particles are free from contamination of harmful metals such as Pb, Cr, Cd, etc., show a clear yellow color, are excellent in heat resistance, chemical resistance and light resistance, and have a low specific gravity.Type: GrantFiled: April 7, 1999Date of Patent: March 13, 2001Assignee: Toda Kogyo CorporationInventors: Tsutomu Katamoto, Mamoru Fujimoto
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Patent number: 6193795Abstract: A method of producing a low structure pyrogenic metal oxide filler is disclosed. The method involves subjecting pyrogenically produced metal oxide agglomerates and aggregates selected from silicon oxide, aluminum oxide, zirconium oxide, or titanium oxide to a dry milling process whereby the pyrogenically produced metal oxide is contacted in an agitating zone with an energy specific force.Type: GrantFiled: April 29, 1994Date of Patent: February 27, 2001Assignee: Degussa CorporationInventors: Maria R. Nargiello, Gary J. Bush, Sturgis G. Allen
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Patent number: 6193794Abstract: The iron oxide platelets comprise at least one layer packet comprising A) a colorless coating having a refractive index n≦1.8, and B) a colorless coating having a refractive index n≧2.0.Type: GrantFiled: March 2, 1999Date of Patent: February 27, 2001Assignee: BASF AktiengesellschaftInventors: Raimund Schmid, Oliver Seeger, Norbert Mronga
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Patent number: 6176918Abstract: Modified pearl luster pigments for waterborn coating systems, based on a platelet-form substrate coated with metal oxides and, located on the topmost metal oxide layer, a top layer consisting of at least two oxides and/or mixed oxides from the group consisting of silicon dioxide, aluminium oxide, cerium oxide, titanium oxide and zirconium oxide, and on a water-based oligomeric silane system. The oligomeric silane system can be described, for example, by the following approximate structure: [HO[Si(A)(OH)z(CH3)1−zO]a[Si(B)(OH)y(CH3)1−yO]b[Si(E)(OH)w(CH3)1−wO]c[Si(D)(OH)v(CH3)1−vO]dH].Type: GrantFiled: May 22, 1998Date of Patent: January 23, 2001Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung and Huels AGInventors: Ralf Glausch, Nicole Fornoff, Joachim Duschek, Burkhard Standke, Roland Edelmann
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Patent number: 6165260Abstract: A metal substrate having a pearlescent pigment coating thereon in which the pearlescent pigment is an iron oxide-coated interference thickness titanium dioxide platelet and in which the iron content of the combined oxide coatings is at least 1% exhibits color travel.Type: GrantFiled: March 30, 1999Date of Patent: December 26, 2000Assignee: Engelhard CorporationInventor: Jeannine M. Gale
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Patent number: 6129784Abstract: A color titanium dioxide coated mica pigment and a coated body applied the pigment which comprise a flaky mica substrate and a composite oxide that is coated onto said mica substrate, and titanium, iron, and nickel are comprised as a metal that is composed of said composite oxide, can improve the color tone of the titanium dioxide coated mica pigment without using an organic substance and a color titanium dioxide coated mica pigment and a coated body applied the pigment which coats a titanium dioxide layer onto said composite oxide can provide a pigment which has color tone flip-flop property that the color tone changes according to the observed direction.Type: GrantFiled: September 28, 1998Date of Patent: October 10, 2000Assignee: Shiseido Co., Ltd.Inventors: Yukie Ikuta, Asa Kimura
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Patent number: 6080232Abstract: The invention relates to spherical colored pigments having an average particle diameter of less than 10 .mu.m on the basis of an oxide, a mixed oxide or a silicate. The pigments are obtainable by means of spray-pyrolysis technology: a solution containing oxide-forming or silicate-forming metal compounds is converted into an aerosol and the latter is fed, preferably after predrying, to a pyrolysis reactor; the pigment is separated from the pyrolysis gas. The colored pigments according to the invention are suitable for the production of ceramic decorations and for the coloring of plastics, synthetic foils, fibers and also lacquers. By reason of the spherical shape, unusual technical application properties are achieved.Type: GrantFiled: November 14, 1997Date of Patent: June 27, 2000Assignee: Degussa AktiengesellschaftInventors: Jorg Sperlich, Ralph Brandes, Hauke Jacobsen, Stipan Katusic, Andreas Schulz
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Patent number: 6036763Abstract: In one embodiment, the present invention relates to a KOH neutralized metatitanic acid mixture containing from about 30% to about 99% by weight metatitanic acid, from about 1% to about 20% by weight of a titanyl compound, and optionally from about 0% to about 55% by weight titanium dioxide, wherein the KOH neutralized metatitanic acid mixture has a pH from about 4 to about 6.5. In another embodiment, the present invention relates to a pigment composition made by combining a KOH neutralized metatitanic acid mixture and at least one guest element precursor, wherein the KOH neutralized metatitanic acid mixture contains metatitanic acid, a titanyl compound, and optionally titanium dioxide, the KOH neutralized metatitanic acid mixture having a pH from about 4 to about 6.5.Type: GrantFiled: October 16, 1998Date of Patent: March 14, 2000Assignee: Engelhard CorporationInventors: Thomas V. Edwards, William L. Howell, Jr., Frank A. Mazzella
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Patent number: 6022404Abstract: Surface-modified, pyrogenically produced mixed oxides which contain two or more components of the series SiO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2, Fe.sub.2 O.sub.3, Nb.sub.2 O.sub.5, V.sub.2 O.sub.5, WO.sub.3, SnO.sub.2, GeO.sub.2 and have been surface-modified with one to several compounds of the following groups:(a) organosilanes of the type (RO).sub.3 Si(C.sub.n H.sub.2n+1),(b) R'.sub.x (RO).sub.y Si(C.sub.n H.sub.2n+1),(c) X.sub.3 Si(C.sub.n H.sub.2n+1),(d) X.sub.2 (R')Si(C.sub.n H.sub.2n+1),(e) X(R').sub.2 Si(C.sub.n H.sub.2n+1),(f) (RO).sub.3 Si(CH.sub.2).sub.m --R',(g) (R").sub.x (RO).sub.y Si(CH.sub.2).sub.m --R',(h) X.sub.3 Si(CH.sub.2).sub.m --R',(i) (R)X.sub.2 Si(CH.sub.2).sub.m --R',(j) (R).sub.2 X Si(CH.sub.2).sub.m --R',(k) Silazanes of the type ##STR1## (l) Cyclic polysiloxanes, (m) Polysiloxanes or silicone oils.Type: GrantFiled: January 11, 1996Date of Patent: February 8, 2000Assignee: Degussa AktiengesellschaftInventors: Manfred Ettlinger, Werner Hartmann, Dieter Kerner, Jurgen Meyer
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Patent number: 6007616Abstract: Disclosed is a system of natural colours consisting of thousands of coloured powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colours cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colours. The powders of this system are obtained by mechanical, chemical, thermal and/or physical processes and are used alone or in combination. They are particularly useful to colour materials and, more especially those used in the construction and architectural fields.Type: GrantFiled: October 8, 1996Date of Patent: December 28, 1999Inventor: Paulette Tourangeau
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Patent number: 6004391Abstract: Purple pigments according to the invention based on a stovable support material, in particular a glass frit, having a coat applied by coprecipitation of an oxide hydrate of one or more elements from the range comprising Al, Si, Sn, Pb, Ti, Nb, Ta, Sc, Y, La, Ce and Zn and a water-insoluble gold compound or colloidal gold are distinguished from prior art pigments of a similar composition by improved color stability in high temperature firing. The pigments are obtainable in the aqueous phase by coprecipitation of an oxide hydrate and a gold compound or colloidal gold in the presence of a support material and in the absence of a reducing agent. Pigments containing gold compounds assume a purple color on heat treatment or by chemical reduction. Preferred pigments containing gold compounds, which may directly be used as decorative colorants, conveniently develop their color during firing of the decoration.Type: GrantFiled: November 28, 1997Date of Patent: December 21, 1999Assignee: Cerdec Aktiengesellschaft Keramische FarbenInventors: Hans-Peter Letschert, Jenny Wilfert
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Patent number: 5993536Abstract: A method of decoloring a colored concrete, comprises adding to the colored concrete, a decoloring pigment comprising a titanium oxide pigment, or a titanium oxide pigment and a pigment having a complementary color relative to color of the colored concrete. Such method can decolore the color of the colored concrete residue which attaches to or remains in production facilities in order to return a color thereof to that of an ordinary plain concrete, without works or treatments for washing-out or removing the colored concrete residue which attaches to or remains in the production facilities, in which the works or treatments are required in the case where the production facilities are used for the production of an ordinary plain concrete after the colored concrete has been produced therein, and without works or treatments for purifying a waste water generated upon washing-out or removing the residue and for making the waste water harmless; and a pigment used therefor.Type: GrantFiled: February 4, 1998Date of Patent: November 30, 1999Assignee: Toda Kogyo CorporationInventors: Toshiki Matsui, Masaru Isoai, Yasuhiko Fujii, Tomoyuki Imai
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Patent number: 5985020Abstract: Plateletlike titanium dioxide reduction pigment consisting of titanium dioxide, titanium suboxides and, if desired, a further metal oxide or titanium oxynitride, obtainable by solidifying an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detaching the resulting coat, coating the resulting titanium dioxide platelets, with or without drying in between, with further titanium dioxide by a wet method, drying and, if desired, calcining the material, and treating the material obtained with a reducing agent in a nonoxidizing gas atmosphere.Type: GrantFiled: January 9, 1998Date of Patent: November 16, 1999Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Stefanie Andes, Sabine Hock, Gunter Brenner, Dieter Bruckner, Andrea Heyland, Matthias Kuntz, Karl Osterried, Gerhard Pfaff, Michael Schmelz