Titanium Compound Containing Patents (Class 106/428)
  • Patent number: 10487214
    Abstract: A method for coating the surface of a substrate, such as inorganic particles, with a metal oxide. A suspension is formed containing the substrate, a polyvalent anion and a metal ion where the molar ratio of the polyvalent anion to the metal ion is greater than three and the metal ion is precipitated onto the substrate as a metal oxide. Preferably, the method is used to coat titanium dioxide pigment particles with aluminum oxide.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 26, 2019
    Assignee: Kronos International Inc
    Inventor: Norbert Beyer
  • Patent number: 9115470
    Abstract: The disclosure provides a paper slurry comprising a treated inorganic particle having reduced photoactivity and improved anti-microbial properties, wherein the treated inorganic pigment comprises: an inorganic core particle; a first treatment of a silicon compound, wherein the silicon compound is added in a single step; and a second treatment comprising a co-precipitated zinc oxide and alumina.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: August 25, 2015
    Assignee: THE CHEMOURS COMPANY TT, LLC
    Inventors: Charles David Musick, Peter Jernakoff
  • Patent number: 8961682
    Abstract: Hydrophilic coating compositions and methods to make and use the compositions are disclosed. The compositions include a photocatalytic pigment material made up of an inorganic pigment and a monomeric anti-oxidants and free radical scavenger that is contacted to the surface of the inorganic pigment.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: February 24, 2015
    Assignee: Empire Technology Development LLC
    Inventors: William Brenden Carlson, Angele Sjong, Feng Wan, Timothy Londergan
  • Patent number: 8906154
    Abstract: A coating, ink, or article containing a pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III).
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 9, 2014
    Assignee: Sun Chemical Corporation
    Inventors: Aaron M. Hollman, Stephane Nicolas, Philippe Schottland, Marguerite Debacker, Aurelie Antonowicz, Hai Hui Lin
  • Publication number: 20140261085
    Abstract: A compound or a pigment comprising a compound where there is simultaneous substitution of more or more elements onto both the A and B sites of a pyrochlore lattice or a lattice related to a pyrochlore. The pigment comprises a compound with the formula of AyA?y?BxB?x?Zp. Elements A and A? have a valence of 1, 2, or 3; and are selected from the elements of groups 1, 2, 12, 13, 14, 15, and the first row of transition metals, excluding H, Pb, Cd, Hg, N, As, and Tl. Elements B and B? have a valence of 3, 4, 5, or 6; and are selected from the elements of the first, second, or third row of transition metals, groups 13, 14, and 15, excluding V, C, Pb, and Tl. Element Z is selected from O, F, N, a chalcogen, S, Se, hydroxide ion, and mixtures thereof.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: The Shepherd Color Company
    Inventors: Simon K. Boocock, Andrew E. Smith, Miroslav Trojan
  • Publication number: 20140073729
    Abstract: The invention relates to rutile titanium dioxide pigment particles that are capable of reflecting infrared radiation to a high degree and also display pigmenting properties, as well as a method for their manufacture. The particles have a mean particle size of 0.4 to 1.0 ?m and are doped with zinc and potassium, but not with aluminium. Preferably, the particles have a compact particle form with a preferred height:width ratio of 1.5:1. The particles are preferably manufactured by the familiar sulphate process for manufacturing titanium dioxide, and are optionally subjected to inorganic and/or organic post-treatment following calcining. Preferably, the rutile titanium dioxide particles are suitable for manufacturing heat-insulating paints, coatings or plastics as well as for instance plasters or paving stones.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 13, 2014
    Applicant: Kronos International, Inc.
    Inventors: Michael Schmidt, Katja Scharf
  • Patent number: 8668955
    Abstract: A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 11, 2014
    Assignee: Nanomateriales S.A. de C.V.
    Inventors: William A. Yuill, Donald D. Gibson, Charles E. Seeney
  • Patent number: 8663820
    Abstract: The invention relates to a printed document of value having at least one authenticity feature in the form of a luminescent substance based on doped host lattices. The host lattice has a strong crystal field and is doped with at least one chromophore with the electron configuration (3d)2.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: March 4, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventors: Thomas Giering, Rainer Hoppe, Fritz Stahr
  • Patent number: 8647429
    Abstract: The present invention relates to effect pigments based on uncoated or coated flake-form substrates having an outer coating comprising a) TiO2 and b) Al2O3, MgO and/or CaO and c) SiO2 and d) ZnO and/or e) at least one mixed oxide of the elements mentioned under a) to d), and to the use thereof, inter alia in paints, coatings, printing inks, plastics and cosmetic formulations.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: February 11, 2014
    Assignee: Merck Patent GmbH
    Inventors: Sabine Melson, Volker Wilhelm, Ulrich Schoenefeld
  • Patent number: 8420181
    Abstract: Disclosed is a method for producing a polymer-based microfluidic device, including: forming a microstructure on a lower polymer matrix; coating the lower polymer matrix with TiO2 to perform patterning of TiO2; bonding the lower polymer matrix with an upper polymer matrix; and radiating UV lights thereto to convert TiO2-coated regions into hydrophilic regions. Disclosed also is a polymer-based microfluidic device obtained by the method. The method enables development of a microfluidic device having high stability and long-term durability.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 16, 2013
    Assignee: Korea Institute of Science and Technology
    Inventor: Sang Kyung Kim
  • Patent number: 8163078
    Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: April 24, 2012
    Assignee: Behr Process Corporation
    Inventors: Ming-Ren Tarng, Kim Chu, Mark Steffenhagen, Shaune Friedman
  • Patent number: 8092834
    Abstract: A complex powder comprising an adsorption site and operation site, wherein said adsorption site attracts or adsorbs a specific enzyme, wherein said operation site inhibits or activates said enzyme, and wherein each of the both sites are appeared on the surface of the powder. In the complex powder described above, it is preferable that ?-potential of the adsorption site at the pH employed is negative value, wherein said adsorption site attracts or adsorbs the specific enzyme whose ?-potential is positive value, and wherein said adsorption site inhibits or activates said specific enzyme. And it is preferable that said adsorption site has ?-potential at pH7.5 of ?10 mV or below. In the complex powder described above, it is preferable that said specific enzyme is a plasminogen activator, and the operation site inhibits said plasminogen activator. The complex powder described above can be used as an external composition for improving a rough skin and an external composition for a sensitive skin.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 10, 2012
    Assignee: Shiseido Co., Ltd.
    Inventors: Norinobu Yoshikawa, Kenichi Sakuma, Katsuki Ogawa, Satoshi Tomomasa, Eriko Kawai, Hiroyuki Yokoyama, Yukimitsu Suda
  • Publication number: 20110319498
    Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present effect pigments may be used in cosmetic and industrial applications.
    Type: Application
    Filed: July 26, 2011
    Publication date: December 29, 2011
    Inventors: Daniel S. Fuller, Curtis J. Zimmermann
  • Patent number: 7993443
    Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present multilayer effect pigment may be used in cosmetics or personal care products.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: August 9, 2011
    Assignee: BASF Catalysts LLC
    Inventors: Daniel S. Fuller, Curtis J. Zimmermann
  • Patent number: 7875212
    Abstract: Embodiments of the present invention provide polymer matrix nanocomposites reinforced with nano-scale materials such as nanoparticles and carbon nanotubes and methods of fabricating. The nanomaterials are provided within relatively low weight fractions, for example in the range of approximately 0.01 to about 0.4% by weight and distributed within the matrix by a magnetic mixing procedure to provide substantially uniform reinforcement of the nanocomposites. Advantageously, these nanocomposites provide significantly enhanced tensile strength, strain to failure, and fracture toughness over corresponding neat matrices.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: January 25, 2011
    Assignee: University of Hawaii
    Inventors: Mohammad Naghi Ghasemi Nejhad, Vinod P Veedu, Andrea Yuen, Davood Askari
  • Patent number: 7850775
    Abstract: A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: December 14, 2010
    Assignee: Sun Chemical Corporation
    Inventors: Aaron M. Hollman, Stephane Nicolas, Philippe Schottland, Marguerite Debacker, Aurelie Antonowicz, Hai Hui Lin
  • Patent number: 7837781
    Abstract: A pigment of empirical composition (TiO2)a(ZnO)b(SnO)c(SnO2)d(RExOy)e(AEO)f(MuOv)g wherein RE is a metal from transition group 3 or a rare earth metal, AE is an alkaline earth metal, and M is any other metal, where a=0.8-3; b=0.5-1.3; c=0.5-1.3; d=0-0.5; e=0-0.3; f=0-0.3; and g=0-0.1, and e+f?0.01. Preferably RE is selected from the elements Y, La, Ce, and Pr. The pigments are used as colorants for coloring paints, inks, plastics, and rubber.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: November 23, 2010
    Assignee: BASF SE
    Inventors: Norbert Mronga, Kirill Bramnik
  • Publication number: 20100218702
    Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.
    Type: Application
    Filed: May 11, 2010
    Publication date: September 2, 2010
    Inventors: Ming-Ren Tarng, Kim Chu, Mark Steffenhagen, Shaune Friedman
  • Patent number: 7763111
    Abstract: In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: July 27, 2010
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Modasser El-Shoubary, Robert M. Hopkins, Karen L. Bowen, David E. Bell
  • Publication number: 20100154680
    Abstract: The present invention relates to pigment granules which contain inorganic filter aids and a process for the production thereof and their use for colouring lime- and/or cement-bound building materials, asphalt, paints, finishes, paper or plastics.
    Type: Application
    Filed: August 20, 2009
    Publication date: June 24, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Holger Friedrich, Herbert Kunstmann, Krzysztof Chlopek, Jüergen Kischkewitz
  • Patent number: 7727323
    Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: June 1, 2010
    Assignee: Behr Process Corporation
    Inventors: Ming-Ren Tarng, Kim Chu, Mark Steffenhagen, Shaune Friedman
  • Publication number: 20100050903
    Abstract: A pigment of empirical composition (TiO2)a(ZnO)b(SnO)c(SnO2)d(RExOy)e(AEO)f(MuOv)g wherein RE is a metal from transition group 3 or a rare earth metal, AE is an alkaline earth metal, and M is any other metal, where a=0.8-3; b=0.5-1.3; c=0.5-1.3; d=0-0.5; e=0-0.3; f=0-0.3; and g=0-0.1, and e+f?0.01. Preferably RE is selected from the elements Y, La, Ce, and Pr. The pigments are used as colorants for coloring paints, inks, plastics, and rubber.
    Type: Application
    Filed: December 17, 2007
    Publication date: March 4, 2010
    Applicant: BASF SE
    Inventors: Norbert Mronga, Kirill Bramnik
  • Publication number: 20090158963
    Abstract: A method for coloring powders is provided that includes mixing a base powder and non-incorporated pigments. A colored powder composition having a base powder particle and at least a partial shell of non-incorporated pigments about the base powder particle is also provided. Articles having a coating of the colored powder composition are also provided.
    Type: Application
    Filed: October 18, 2006
    Publication date: June 25, 2009
    Applicant: Valspar Sourcing, Inc.
    Inventors: William G. O'Dell, Larry B. Brandenburger, Steven D. Johnson, Judith L. Bourdeau
  • Publication number: 20090107362
    Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.
    Type: Application
    Filed: December 30, 2008
    Publication date: April 30, 2009
    Inventors: Ming-Ren Tarng, Kim Chu, Mark Steffenhagen, Shaune Friedman
  • Patent number: 7455726
    Abstract: The present invention relates to photostabilised effect pigments in which one or more calcined and vanadium-containing oxide layers, alone or mixed with sulfates, borates or phosphates, have been applied to a substrate, to a process for the preparation thereof, and to the use thereof in plastics, paints, coatings, printing inks, cosmetics, films, in security printing, for laser marking, in thermal protection or for colouring seed.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: November 25, 2008
    Assignee: Merck Patent GmbH
    Inventors: Ulrich Schoenefeld, Padma Kaviratna
  • Publication number: 20080181921
    Abstract: 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 metal oxide coating having a refractive index n?2.0, (B) a colorless metal oxide or fluoride coating having a refractive index n?1.8, (C) a nonabsorbing metal oxide coating of high refractive index, and, wherein the pigment further comprises (D) an oxide of calcium, magnesium, or zinc. The present pigment may be used in paints, printing inks, and for producing counterfeit-protected documents of value, such as bank notes, cheques, cheque cards, credit cards, identity cards, etc.
    Type: Application
    Filed: October 16, 2007
    Publication date: July 31, 2008
    Applicant: BASF Corporation
    Inventor: Carmine DeLuca
  • Publication number: 20080110371
    Abstract: A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.
    Type: Application
    Filed: June 20, 2007
    Publication date: May 15, 2008
    Applicant: Sun Chemical Corporation
    Inventors: Aaron M. Hollman, Stephane Nicolas, Philippe Scottland, Marguerite Debacker, Aurelie Antonowicz, Hai Hui Lin
  • Patent number: 7288217
    Abstract: An electroconductive compound in a flake form, characterized in that it comprises a titanium oxide which has an average long diameter of 1 to 100 ?m and an average thickness of 0.01 to 1.5 ?m, and contains potassium in an amount of 0.3 to 5 wt % in terms of potassium oxide (K2O) and, formed on the surface thereof, a first electroconductive layer comprising a tin oxide containing antimony and, formed on the first electroconductive layer, a second electroconductive layer comprising a tin oxide.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: October 30, 2007
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Yukiya Hareyama, Hidetoshi Ogawa
  • Patent number: 7169222
    Abstract: Multilayer interference pigment consisting of a transparent 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 alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: January 30, 2007
    Assignee: Merck Patent GmbH
    Inventors: Hans-Dieter Brückner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
  • Patent number: 6758895
    Abstract: A particulate hydrous mineral suitable for use as an opacifying pigment, filler or extender has a shape factor which is greater than S, where S is defined by Equation 1 as follows: S=(d50/0.036)+20  Equation 1; where d50 is the mean particle size of the particles of the mineral measured in microns. The particulate mineral is preferably a kaolin, which is particularly suitable for use in aqueous matt paint compositions.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: July 6, 2004
    Assignee: Imerys Minerals Limited
    Inventor: Robin Wesley
  • Patent number: 6730156
    Abstract: A filler comprising a substantially amorphous cluster comprising non-heavy metal oxide particles and heavy metal oxide. The filler can be mixed into a hardenable resin to provide radiopaque dental materials having desirable strength and aesthetic character.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 4, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Mark Steven Windisch, Xiaodong Zhang, Richard Paul Rusin, Sumita Basu Mitra
  • Patent number: 6689205
    Abstract: Multilayer interference pigment consisting of a transparent 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 alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: February 10, 2004
    Assignee: Merck Patent Gesellschaft
    Inventors: Hans-Dieter Brückner, Andrea Heyland, Christoph Schmidt, Christina Schank, Claudia Seibel
  • Patent number: 6677041
    Abstract: Platy potassium titanate having a mean major diameter of 1-100 &mgr;m and a mean aspect ratio of 3-500 and obtainable by subjecting magnesium or lithium potassium titanate to an acid treatment to thereby prepare platy titanate, immersing the platy titanate in a potassium hydroxide solution and then subjecting it to calcination.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: January 13, 2004
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Hiroshi Ogawa, Shigeo Takahashi, Nobuki Itoi, Kousuke Inada
  • Patent number: 6616746
    Abstract: The titanium dioxide pigment of this invention has on the titanium dioxide particle surface a coating layer comprising a polyhydric alcohol and a hydrolysis product of an aminosilane compound, has a dispersibility of not more than 20 kg/cm2 as judged in terms of resin pressure increase, and is excellent in hydrophobicity and dispersibility. The pigment is useful as a coloring agent for plastics which requires good lacing resistance and dispersibility.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: September 9, 2003
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Hideo Takahashi, Eiji Yamada, Toshihiko Akamatsu, Takeshi Fujimura
  • Patent number: 6576052
    Abstract: The titanium dioxide pigment of the present invention comprises titanium dioxide particles, the coating layer containing the aluminum phosphate compound and the coating layer containing the hydrolyzate of the organosilane compound, on the surface of the particles, in which a difference in water content between 100° C. and 300° C., determined by the Karl Fischer method, is not greater than 1500 ppm, and is thus excellent in light fastness, hydrophobicity and dispersibility. In particular, the titanium dioxide pigment of the invention is extremely advantageous as a colorant for plastics, which requires light fastness (resistance to discoloration) lacing resistance and dispersibility, to a high degree.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: June 10, 2003
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Hideo Takahashi, Masaki Shimojo, Toshihiko Akamatsu
  • Patent number: 6451102
    Abstract: 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: Grant
    Filed: May 4, 2000
    Date of Patent: September 17, 2002
    Assignee: Merck Patent GmbH
    Inventors: Robin Hilder, Manfred Kieser
  • Patent number: 6387498
    Abstract: 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: Grant
    Filed: April 7, 2000
    Date of Patent: May 14, 2002
    Assignee: Flex Products, Inc.
    Inventors: Kent E. Coulter, Thomas Mayer, Roger W. Phillips, John S. Matteucci
  • Patent number: 6383638
    Abstract: 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: Grant
    Filed: October 13, 2000
    Date of Patent: May 7, 2002
    Assignee: Flex Products, Inc.
    Inventors: Kent E. Coulter, Thomas Mayer, Roger W. Phillips, John S. Matteucci
  • Patent number: 6270566
    Abstract: A process is disclosed for coloring building materials with inorganic pigments in the form of microgranulates. The granulates comprise one or more pigments and one or more compounds selected from boron, aluminum, silicon, titanium, zinc and tin.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 7, 2001
    Assignee: Bayer AG
    Inventors: Jakob Rademachers, Günther Teichmann
  • Patent number: 6193794
    Abstract: 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: Grant
    Filed: March 2, 1999
    Date of Patent: February 27, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Raimund Schmid, Oliver Seeger, Norbert Mronga
  • Patent number: 6045609
    Abstract: The invention features in particular white mineral pigments in the form of fine particles having increased stability against solar ultraviolet radiation, characterised in that the pigment particles are coated with an oxidising agent. It is useful in the formulation of white paints for space vehicles.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 4, 2000
    Assignee: Centre National D'Etudes Spatiales
    Inventors: Jean-Claude Guillaumon, Pascale Veronique Nabarra
  • Patent number: 6004391
    Abstract: 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: Grant
    Filed: November 28, 1997
    Date of Patent: December 21, 1999
    Assignee: Cerdec Aktiengesellschaft Keramische Farben
    Inventors: Hans-Peter Letschert, Jenny Wilfert
  • Patent number: 5972359
    Abstract: Disclosed are topical compositions which provide good coverage of skin imperfections, e.g., pores and uneven skin tone, while retaining a natural skin appearance. The compositions contain a particulate material having a refractive index of at least about 2, e.g., TiO.sub.2.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 26, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Mark Richard Sine, James Pedrosa SaNogueira, Jr., Nancy Coultrip Dawes
  • Patent number: 5972097
    Abstract: The invention provides a method for producing colorful inorganic pigments, which comprise complex oxides of various elements, which have good weather resistance and good heat resistance, and which are widely used in colorants for ceramics and in colorants for coatings and plastics. In the method, the composite oxides are sintered at a low temperature for a short period of time to give homogeneous and well colored pigments. Under the sintering conditions, the composite oxides are not sintered excessively. The grinding step in the method is simplified.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 26, 1999
    Assignee: Ferro Enamels (Japan) Limited
    Inventors: Toyotaro Maki, Shuzo Mihara, Shigeru Suzuki
  • Patent number: 5961710
    Abstract: The invention relates to granules of inorganic pigments, a process for their production using several auxiliary substances by compacting and their use in many technical fields.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: October 5, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Linde, Manfred Eitel, Olaf Schmidt-Park, Kai Butje
  • Patent number: 5939054
    Abstract: A sunscreen composition containing a synergic mixture of titanium and/or zinc oxide particles, characterized in that said particles are incorporated in paste-forming oils and/or esters and/or fatty alcohols and/or ethers selected so as to provide a wetting point of the incorporated titanium oxide particles and of the incorporated zinc oxide particles lower than about 5 and a flow point of said incorporatedparticles lower than about 30. The invention also provides a method for preparing said composition and the use thereof for protecting the skin against ultraviolet radiation and for maintaining the monocrystalline dispersion of minerals in the formulation and on the skin.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: August 17, 1999
    Assignee: Pierre Fabre Dermo-Cosmetique
    Inventors: Philippe Msika, Francis Carriere, Jean-Pierre Fabre, France Boyer
  • Patent number: 5914101
    Abstract: A stabilised aqueous dispersion of particulate zinc oxide comprises water, a stabilising agent and zinc oxide, the particles of which are coated with dense amorphous silica. Useful stabilising agents include cellulose ethers which contain quaternary ammonium groups and polyalkylene glycols. The dispersions have excellent stability at high concentrations of zinc oxide and are useful for preparing sunscreen formulations, cosmetics and veterinary products.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: June 22, 1999
    Assignee: Tioxide Specialties Limited
    Inventors: Carole Allyson Maria Tapley, Philip Laurence Lyth, Iain Michael Harper
  • Patent number: 5776239
    Abstract: An ultrafine titanium dioxide powder is disclosed that can be produced by hydrothermal treating an amino titanium oxalate composition. Ultrafine titanium dioxide powders are useful in cosmetic and other applications for controlling exposure to ultraviolet (UV) light.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: July 7, 1998
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Salvatore Anthony Bruno
  • Patent number: 5766336
    Abstract: Colored pigments are provided from the green-yellow to red spectrum based on oxide-nitrides with two or three different cations Q, R and S in the crystal lattice, wherein the nitrogen to oxygen atomic ratio is determinative for the color. These pigments crystallise in the pyrochlore, spinel or elpasolite structure. Pigments in the perovskite are as provided with increased color brilliance. The color of the pigments can be adjusted in a wide range of the color spectrum during their preparation within a substance class with the cations Q, R and S and while retaining the crystal structure, by increasing or lowering the atomic ratio N to O in the oxide-nitride and bringing about the required charge balancing by replacing an equivalent quantity of the cation Q with the valency q by a cation R with the valency q+1.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: June 16, 1998
    Assignee: Cerdec Aktiengesellschaft Keramische Farben
    Inventors: Martin Jansen, Hans-Peter Letschert
  • Patent number: 5749959
    Abstract: A stable dark or moderately dark opaque exterior coating constituted of pentations and binder materials having low solar absorbing properties capable of visual and infrared camouflage. The pigmentations and binder materials may be selected for the proper optical qualities by previous testing before mixture and application as a coating.
    Type: Grant
    Filed: February 10, 1969
    Date of Patent: May 12, 1998
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert F. Supcoe, Melvin Greenberg