Oxidation Of Titanium Tetrahalide Or Product Patents (Class 106/437)
  • Patent number: 10487509
    Abstract: A method for producing a covering element made from natural fibres, in particular cellulose, impregnated with bitumen, includes a step of coating at least one of two faces of a fibre mat (4) followed by a step of impregnating with bitumen, the coating being carried out with a liquid composition (5) including at least one resin and/or at least one pigment. The liquid composition is a dye composition including at least one pigment and at least one resin, and the method involves adding an additive to the liquid composition (5), the additive having fireproof properties and including at least graphite and a cooling agent. Preferably, the mat (4) is coated with the liquid composition including the fireproof additive using a roller.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: November 26, 2019
    Assignee: ONDULINE
    Inventors: Eyup Tokdemir, Ethem Sakioglu, Andac Guzel
  • Patent number: 9748558
    Abstract: The present invention provides a method for preparing an electrode material, comprising providing an acidic plating bath; adding titanium dioxide in the form of powder, metal salt, and reductant to said acidic plating bath to obtain a precursor; and heat treating said precursor to obtain an electrode material. When the electrode material obtained by said method is applied to batteries, the batteries have not only high capacity, but also long lifetime.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 29, 2017
    Assignee: Taiwan Hopax Chems. Mfg. Co., Ltd.
    Inventors: Chia-Chin Chang, Yu-Chun Chen, Chun-Wei Huang, Ru-Shi Liu, Li-Jane Her
  • Patent number: 9731979
    Abstract: Disclosed is a process/system for the removal of metal chloride impurities from a titanium tetrachloride stream. The metal chloride impurities are removed through contact of the titanium tetrachloride stream with an alumino-silicate material, which can be selected based on certain properties of the alumino-silicate and based on the geometries of the impurity(ies) and the alumino-silicate.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: August 15, 2017
    Assignee: Cristal USA Inc.
    Inventors: Bela Derecskei, Alexandre Jean Fines, Alastair Valentine
  • Patent number: 9573108
    Abstract: This disclosure relates to a process for preparing a treated inorganic core particle having improved dispersability comprising: (a) heating a slurry comprising porous silica treated inorganic core particle and water at a temperature of at least about 90° C.; and (b) adding a soluble alumina source to the slurry from step (a) while maintaining the pH at about 8.0 to 9.5 to form an alumina treatment on the porous silica treated inorganic core particle; wherein the treated inorganic core particle does not comprise dense silica or alumina treatments, and has silica present in the amount of at least about 7% up to about 14% and alumina present in the amount of about 4.0% to about 8.0%; and wherein the particle to particle surface treatments are substantially homogeneous.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: February 21, 2017
    Assignee: THE CHEMOURS COMPANY TT, LLC
    Inventors: Michael Patrick Diebold, Eric Rusnak, Agingu Shih
  • Patent number: 9416277
    Abstract: The present disclosure relates to a vapor phase process for producing a substantially anatase-free titanium dioxide pigment comprising: reacting a vaporous titanium dioxide precursor and an oxygen containing gas in a reactor; and introducing a mixture of liquid titanium dioxide precursor and a liquid or finely divided solid compound comprising a element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, S, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, and Pb, into the reactor at a point downstream of the addition of the vaporous titanium dioxide precursor, and the oxygen containing gas, and at a process temperature of about 1200° C. to about 1600° C. to produce titanium dioxide particles that are coated by the oxide formed from the element.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: August 16, 2016
    Assignee: THE CHEMOURS COMPANY TT, LLC
    Inventors: Charles David Musick, Robert A Johns
  • Patent number: 9267010
    Abstract: The instant invention provides a rotomolding composition. The a rotomolding composition comprises at least 95 percent by weight of a thermoplastic polymer; and from 0.1 to 3 percent by weight of metal oxide lamellae; wherein the rotomolding composition is characterized by at least one of the following properties: (a) having a retention at elongation at break of at least 85 percent after 4000 hours of accelerated aging; or (b) having a ductility improvement of at least 50 percent relative to a similar composition free of said metal oxide lamellae.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 23, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Luis G. Zalamea, Roberto Rigobello, Thomas T. Allgeuer, Gerd Lohse
  • Patent number: 9234106
    Abstract: Core-shell type composite oxide fine particles are described in which the core particles are oxide fine particles or composite oxide fine particles that do not contain silicon and/or aluminum as main components, and the surface of the core particles is covered with a shell including a composite oxide that contains silicon and aluminum as main components, the shell containing silicon and aluminum in a weight ratio in terms of oxides, SiO2/Al2O3, in the range of 2.0 to 30.0. A dispersion liquid of the core-shell type composite oxide fine particles exhibits very high stability.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: January 12, 2016
    Assignee: JGC Catalysts and Chemicals Ltd.
    Inventors: Yoichi Ishihara, Toshiharu Hirai, Michio Komatsu
  • Patent number: 8876965
    Abstract: A composite comprising a silicate material, such as, a sodium aluminosilicate, and titanium dioxide disposed on the surface thereof is disclosed, together with formulations comprising the composite and methods for preparing the same.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: November 4, 2014
    Assignee: J.M. Huber Corporation
    Inventors: Hilary Ellen Matthews, Ronald Louis Romer
  • Publication number: 20130284067
    Abstract: The present disclosure relates to a vapor phase process for producing a substantially anatase-free titanium dioxide pigment comprising: reacting a vaporous titanium dioxide precursor and an oxygen containing gas in a reactor; and introducing a mixture of liquid titanium dioxide precursor and a liquid or finely divided solid compound comprising a element selected from the group consisting of Li, Be, B, Na, Mg, Al, P, 5, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, and Pb, into the reactor at a point downstream of the addition of the vaporous titanium dioxide precursor, and the oxygen containing gas, and at a process temperature of about 1200 ° C. to about 1600 CC to produce titanium dioxide particles that are coated by the oxide formed from the element.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 31, 2013
    Applicant: EI DU PONT DE NEMOURS AND COMPANY
    Inventors: Charles David Musick, Robert A. Johns
  • Publication number: 20130276671
    Abstract: The present disclosure relates to a vapor phase process for producing a substantially anatase-free titanium dioxide pigment comprising reacting a vaporous titanium dioxide precursor and an oxygen containing gas in a reactor; and introducing a mixture of liquid silicon halide and liquid titanium dioxide precursor into the reactor at a point downstream of the addition of the vaporous titanium dioxide precursor, and the oxygen containing gas, and at a process temperature of about 1200° C. to about 1600° C. to produce titanium dioxide particles that are substantially encapsulated in silicon dioxide.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 24, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Charles David Musick, Robert A. Johns, Joseph J. Zaher
  • Patent number: 8357426
    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: November 7, 2008
    Date of Patent: January 22, 2013
    Assignee: Nanomateriales S.A. de C.V.
    Inventors: Charles E. Seeney, William A. Yuill, Donald D. Gibson
  • Patent number: 8304077
    Abstract: Metallic effect pigments with a platelet-shaped metallic substrate. The pigments have at least one metal oxide layer.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: November 6, 2012
    Assignees: Eckart GmbH, BYK-Chemie GmbH
    Inventors: Alfred Bubat, Wolfgang Griesel, Phu Qui Nguyen, Hans-Jörg Kremitzl
  • Patent number: 8158270
    Abstract: Under the presence of at least one out of copper, manganese, nickel, cobalt, iron, zinc, and compounds thereof, a tetravalent titanium salt solution and a basic solution are reacted together to form a hydroxide of titanium and the above metal, and then the titanium hydroxide is peroxidated with an oxidizing agent to manufacture an aqueous liquid or dispersion having therein titanium oxide fine particles having peroxy groups; by using this alone to form a coating film adjacent to a coating film of an organic dye or pigment, or using this to form a coating film together with an organic dye or pigment, a drop in decorativeness of color due to fading or discoloration of a coating material, a printed article, a building material, a fiber, an organic polymer resin product or the like can be prevented, and moreover surface anti-soiling and hydrophilic properties can be realized.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: April 17, 2012
    Assignee: Sustainable Titania Technology Incorporated
    Inventors: Shiro Ogata, Yoshimitsu Matsui
  • Patent number: 8147794
    Abstract: The invention relates to manufacturing titanium dioxide by oxidizing titanium tetrachloride by a multi-stage method, where liquid titanium tetrachloride is used in a first and gaseous titanium tetrachloride is used in a second stage. The process is energetically more favorable and offers the possibility, to a certain extent, of controlling the mean particle size of the end product.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: April 3, 2012
    Assignee: Kronos International, Inc.
    Inventor: Rainer Gruber
  • Patent number: 8114376
    Abstract: The manufacture of titanium dioxide by oxidation of titanium tetrachloride in a multistage method, where both oxygen and titanium tetrachloride are added in several stages. In the first stage gaseous TiCl4 is introduced into a preheated oxygen-containing gaseous stream in a stoichiometric or hyper-stoichiometric amount to produce a TiO2 containing gas suspension. In the second or further stages liquid TiCl4 and oxygen-containing gas is introduced into the TiO2 containing gas suspension to produce further TiO2.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 14, 2012
    Assignee: Kronos International, Inc.
    Inventor: Rainer Gruber
  • Patent number: 8101152
    Abstract: A titanium halide, preferably titanium tetrachloride, is reacted with suitable reductant, preferably an alkali metal or alkaline earth metal, under ultrasonic excitation in a liquid reaction medium to form nanometer size particles of titanium which may incorporate unreacted reductant. The nanosized titanium particles may be a precursor for nanosized titanium oxide which is formed by oxidizing the titanium, preferably with a low molecular weight alcohol. When the titanium particles incorporate unreacted reductant the oxidation reaction will yield nanometer sized titanates. The nanosized particles, whether titanium oxide or titanates may be extracted by first filtering them from the reaction medium, followed by washing with water to remove any water-soluble reaction products followed by spray drying.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: January 24, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Ion C. Halalay, Michael P. Balogh
  • Patent number: 8025976
    Abstract: Under the presence of at least one out of copper, manganese, nickel, cobalt, iron, zinc, and compounds thereof, a tetravalent titanium salt solution and a basic solution are reacted together to form a hydroxide of titanium and the above metal, and then the titanium hydroxide is peroxidated with an oxidizing agent to manufacture an aqueous liquid or dispersion having therein titanium oxide fine particles having peroxy groups; by using this alone to form a coating film adjacent to a coating film of an organic dye or pigment, or using this to form a coating film together with an organic dye or pigment, a drop in decorativeness of color due to fading or discoloration of a coating material, a printed article, a building material, a fiber, an organic polymer resin product or the like can be prevented, and moreover surface anti-soiling and hydrophilic properties can be realized.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: September 27, 2011
    Assignee: Sustainable Titania Technology Incorporated
    Inventors: Shiro Ogata, Yoshimitsu Matsui
  • Patent number: 8003069
    Abstract: The invention relates to a method for producing carbon black or other flame aerosols, comprising the following steps: the heat is removed from the flame by dissipation and/or radiation; a thin gas boundary layer is formed; the flow formed by the flame and the gas boundary layer is accelerated or expanded; the obtained aerosol is withdrawn; and the cooling surface is cleaned. The invention further relates to a device for carrying out such a method and a black carbon having a maximum pH value of 6.0, a maximum ignition residue of 0.1 percent, and a maximum 5 ?m screening refuse of 200 ppm. The inventive black carbon can be used in rubber, plastic, printing inks, inks, inkjet inks, toners, lacquers, dyes, paper, bitumen, concrete, and other construction materials.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: August 23, 2011
    Assignee: Evonik Carbon Black GmbH
    Inventors: Ulrich Riebel, Matthias Katzer, Kai Krauss, Alfons Karl, Juergen Behnisch
  • Patent number: 7959726
    Abstract: Blends of carbon black or other fillers is described. The blends of carbon black or other fillers are preferably pre-blended prior to introducing the blend into a product such as an elastomeric or polymeric product.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: June 14, 2011
    Assignee: Cabot Corporation
    Inventor: Gregory T. Gaudet
  • 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: 7854917
    Abstract: A process for manufacturing titanium dioxide by the chloride process is provided. In one embodiment, a particle size control agent comprising an ionizing agent such as potassium chloride is introduced into the reaction zone of the oxidation reactor to control the particle size of the titanium dioxide. In a first aspect, the effectiveness of the particle size control agent in controlling the particle size of the titanium dioxide is improved by adding the particle size control agent to at least one of the reactant streams at a sufficient distance upstream of the oxidization reactor to allow the ionizing agent to efficiently ionize and the particle size control agent to thoroughly admix with the stream(s) prior to entering the reaction zone. In a second aspect, the particle size control agent comprises an ionizing agent and fumed silica. In another embodiment, the amount of alumina added to the reaction zone of the oxidization reactor is increased in order to control the particle size of the titanium dioxide.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: December 21, 2010
    Assignee: Tronox LLC
    Inventors: Harry E. Flynn, Robert O. Martin, Charles A. Natalie, Jeffrey W. Giles
  • Publication number: 20100297045
    Abstract: The invention relates to effect pigments comprising artificial platelet-shaped substrates which have at least one optically active coating, where the effect pigments have a volume-averaged cumulative undersize distribution curve with the characteristic numbers D10, D50 and D90, said cumulative undersize distribution curve having a span ?D of 0.7-1.4, and the span ?D being calculated in accordance with formula (I): ?D=(D90?D10)/D50??(I), and the average thickness of the artificial platelet-shaped substrates being 500 nm to 2000 nm.
    Type: Application
    Filed: November 25, 2008
    Publication date: November 25, 2010
    Inventors: Günter Kaupp, Ulrich Schmidt, Dirk Schumacher, Ralph Schneider
  • Patent number: 7811376
    Abstract: An aqueous pigment preparation containing: (A) at least one organic and/or inorganic pigment; (B) at least one water-soluble or water-dispersible non-ionic oligoester or polyester, which is obtained by the polycondensation of dicarboxylic acid and glycol components, said oligoester or polyester comprising I) one or more aromatic dicarboxylic acids, their esters or anhydrides, II) C2-C8 alkenediols, III) poly (C1-C4-alkene)glycols and/or methylpoly(C2-C4 alkene)glycols, IV) optional water-soluble addition products of alkene oxide on C1-C24 alcohols, C6-C18 alkylphenols or on C8-C24 alkylamines and V) one or more optional polyols; (C) optional additional dispersants and surfactants that are conventionally used to produce aqueous pigment dispersions; (D) optional additional additives that are conventionally used to produce aqueous pigment dispersions; and (E) water.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: October 12, 2010
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Bjoern Fechner, Frank-Peter Lang, Alexander Lerch, Uwe Bechtold, Hendrik Ahrens
  • Patent number: 7806977
    Abstract: Pigment compositions and methods are provided comprising coupling agents. In various embodiments, a pigment is provided comprising titanium dioxide and a coupling agent having the formula: (R?O)(q-n)M(XRm)n wherein M is Ti, Zr, Sn, or Al; X is —CO2, ?PO2, —PO2(OH), ?PO2PO2(OH), or —SO3; m is 1 or 2; n is 1, 2, or 3 and q is 4 when M is Ti, Zr or Sn, or n is 1 or 2 and q is 3 when M is Al; R? is a substituted or unsubstituted alkyl, alkynyl, alkydiyl, alkyleno, alkanyl, alkenyl, alkoxy, aryl, arylalkyl, arylaryl, aryldiyl, or aryleno; and R is a substituted or unsubstituted alkyl, alkynyl, alkydiyl, alkyleno, alkanyl, alkenyl, alkoxy, aryl, arylalkyl, arylaryl, aryldiyl, or aryleno, wherein R comprises a carbon chain of 2 to 30 carbon atoms. The pigment compositions have improved lacing resistance, dispersibility, stability or combinations thereof.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: October 5, 2010
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Gang Lu, Linh Thuy Cheong, William W. Reichert
  • 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
  • Patent number: 7686881
    Abstract: Flame-hydrolytically produced titanium dioxide powder that is present in the form of aggregates of primary particles, and has a BET surface of 20 to 200 m²/g, a half width (HW) [nm] of the primary particle distribution of HW = a×BETf where a = 670×10?9 m³/g and ?1.3 ≤ f ≤ ?1.0 and the proportion of particles with a diameter of more than 45 &mgr;m lies in a range from 0.0001 to 0.05 wt. %. The powder is produced by a process in which a titanium halide is vapourised at temperatures of less than 200°C.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: March 30, 2010
    Assignee: Degussa AG
    Inventors: Kai Schumacher, Andreas Schild, Martin Moerters
  • Publication number: 20090075566
    Abstract: The invention provides a method of chemically-mechanically polishing a substrate. A substrate is contacted with a polishing pad and a polishing composition comprising an abrasive consisting of (A) particles consisting of titanium dioxide having a rutile structure and (B) particles consisting of titanium dioxide having an anatase structure, wherein an x-ray diffraction pattern of the particles has a ratio of X/Y of about 0.5 or more, wherein X is an intensity of a peak in an x-ray diffraction curve representing a d-spacing of about 3.24 ?, and Y is an intensity of a peak in an x-ray diffraction curve representing a d-spacing of about 3.51 ?, and water. The polishing component is moved relative to the substrate, and at least a portion of the substrate is abraded to polish the substrate.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Applicant: Cabot Microelectronics Corporation
    Inventors: Daniela White, John Parker
  • Patent number: 7465430
    Abstract: There is described an apparatus for making metal oxide particles which are substantially free of coarse tail from an oxidizing agent and a metal reactant in a flow reactor. The apparatus can be a concentric tubular flow reactor comprising a substantially funnel-shaped reactant contacting region located adjacent to a reaction zone which is able to direct a flow of a hot oxidizing agent towards a flow of the metal reactant to form a reaction stream which flows downstream into a reaction zone, whereby the hot oxidizing agent of the reaction stream is able to surround the flow of metal reactant sufficient to prevent the metal reactant from contacting the wall of the reactant contacting region and forming scale on the wall.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: December 16, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Juergen Kurt Plischke, Stephan Claude De La Veaux, Scott Rickbeil Frerichs, Jodi Lynn Witt, Christian Normand
  • Patent number: 7416600
    Abstract: Silicon-titanium mixed oxide powder produced by flame hydrolysis, which consists of aggregates of primary particles, with a BET surface area of 90±15 m2/g, a titanium dioxide proportion of 50±8 wt. % and an anatase/rutile ratio of 60:40 to 70:30. It is produced in that a mixture of silicon halide, titanium halide, hydrogen and primary air is ignited in a burner and the flame is burned into a reaction chamber closed off from the surrounding air, and secondary air and a gas, which increases the temperature in the reaction chamber by combustion and/or which slows down the cooling in the reaction chamber because of low heat transfer, are additionally introduced into the reaction chamber. It can be used in toner compositions.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: August 26, 2008
    Assignee: Degussa AG
    Inventors: Kai Schumacher, Martin Moerters, Uwe Diener, Oswin Klotz
  • Patent number: 7413726
    Abstract: The present invention provides a low temperature process for the synthesis of ultrafine rutile phase titanium dioxide particles through vapor phase hydrolysis of titanium tetra chloride.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: August 19, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Gerald D. Surender, Ani K. John, Kumara P. Rajendra Prasad, Savithri Sivaraman
  • Patent number: 7414089
    Abstract: The present invention is related to methods and compositions for marking and removing turf lines and other markings from artificial and natural turf, including sports fields. The marking compositions include alkali-activatible acrylics, including one or both of alkali-soluble resin and an alkali-swellable thickener to enable removing the dried composition with an alkaline solution.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: August 19, 2008
    Assignee: Eco Chemical, Inc.
    Inventors: Mark K. Cheirrett, Walter Sadowski
  • Patent number: 7407606
    Abstract: A method for producing a titanium dioxide powder having a well electroconductive layer containing substantially no antimony, which comprises providing a titanium dioxide powder containing specific amounts or less of alkali metals, such as sodium and potassium, alkaline earth metals, such as magnesium and calcium, and metals having a valence of four or less, such as aluminum, zinc and iron, preparing an aqueous suspension of the titanium dioxide powder, adding an acidic aqueous solution containing a tin compound and a phosphorus compound and an alkaline solution to the above aqueous suspension so that the aqueous suspension has a pH in the range of 2 to 6 or 8 to 12, and firing the resulting product at a temperature of 600 to 925° C.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: August 5, 2008
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Katsuichi Chiba, Yuichi Yasuda
  • Patent number: 7381398
    Abstract: A titanium oxide powder holding a barium compound on the surface of the particles thereof is used for manufacturing a highly crystalline fine barium titanate powder by solid-phase reaction. When the titanium oxide powder and a barium-containing powder material are mixed and calcined to prepare the barium titanate powder, the barium compound on the surfaces of the titanium oxide powder particles inhibits the sintering, or the growth, of the titanium oxide during the calcination. Consequently, the resulting barium titanate powder is highly crystalline and fine.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: June 3, 2008
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke Nakaya, Masami Yabuuchi
  • Publication number: 20080105165
    Abstract: This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 300° C. to about 600° C.
    Type: Application
    Filed: June 8, 2007
    Publication date: May 8, 2008
    Inventors: Russell Bertrum Diemer, Alan Roger Eaton, Narayanan Sankara Subramanian, Stephen William Taylor
  • Patent number: 7344591
    Abstract: Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium compound. The aqueous titanium compound is reacted or combined with a dispersing agent. Titanium dioxide nanoparticles are precipitated to form a suspension. The formation of the titanium dioxide nanoparticles is influenced by the presence of bonding of the dispersing agent. The size of the nanoparticles can be advantageously controlled by selecting the ratio of titanium to dispersing agent. In addition, the titanium dioxide nanoparticles can be used in suspension form or filtered and dried to form a powder.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: March 18, 2008
    Assignee: Headwaters Technology Innovation, LLC
    Inventors: Bing Zhou, Sukesh Parasher, Zhihua Wu, Zhenhua Zhou
  • Patent number: 7326399
    Abstract: Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium compound. The aqueous titanium compound is reacted or combined with a dispersing agent. Titanium dioxide nanoparticles are precipitated to form a suspension. The formation of the titanium dioxide nanoparticles is influenced by the presence of bonding of the dispersing agent. The size of the nanoparticles can be advantageously controlled by selecting the ratio of titanium to dispersing agent. In addition, the titanium dioxide nanoparticles can be used in suspension form or filtered and dried to form a powder.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: February 5, 2008
    Assignee: Headwaters Technology Innovation, LLC
    Inventors: Bing Zhou, Sukesh Parasher, Zhihua Wu, Zhenhua Zhou
  • Publication number: 20070298059
    Abstract: A method for marking titanium dioxide pigment particles, as well as a method for identifying and verifying products via the marked titanium dioxide pigment particles contained in these products. The marker substance(s) is/are added during titanium dioxide production, preferably during surface treatment, drying or steam-milling. Particularly suitable as marker substances are the lanthanides, yttrium, zinc, molybdenum, tungsten, germanium, tin and scandium. The method is used to verify authentic product, to identify product forgeries (product piracy), to track distribution channels, or to identify the pigment used in order to counter unjustified complaints. It can be used in the product segments: fibres for textiles, papers for documents, pharmaceuticals, and also for plastics and coatings.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 27, 2007
    Inventors: Peter Tiedemann, Siegfried Blumel, Roland Herzog, Volker Schmitt
  • Patent number: 7297323
    Abstract: A method of manufacturing fine particles of the invention includes introducing a reactive gas flow containing a fine particle source material into a reactor from one side, growing fine particles in a gas phase by heating the fine particle source material in the reactive gas flow, introducing a diluting gas flow into the reactor from another side being almost counter-flow to the reactive gas flow, equalizing flow rates of the reactive gas flow and the diluting gas flow substantially with respect to a cross section of a flow channel, and then stopping growth of the fine particles by merging the reactive gas flow and the diluting gas flow.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: November 20, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Isao Matsui
  • Publication number: 20070248822
    Abstract: Disclosed herein are pigments comprising mostly rutile TiO2, wherein the mostly rutile TiO2 consists essentially of low abrasion TiO2 particles produced by introducing a metal halide into the chloride process. Further disclosed are ink, can coatings, fibers, papers, and plastics comprising the pigment. Also disclosed herein are pigments comprising the low abrasion TiO2 pigments comprising TiO2 particles which have been further heat treated at a temperature of at least about 800° C. in an oxidizing atmosphere for a time period of at least about 1 hour.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Inventors: Michael Andrew Hofmann, Charles David Musick, Narayanan Sankara Subramanian, Kostaninos Kourtakis, Austin Henry Reid
  • Patent number: 7247200
    Abstract: This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 300° C. to about 600° C.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: July 24, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Russell Bertrum Diemer, Jr., Alan Roger Eaton, Narayanan Sankara Subramanian, Stephen William Taylor, George A. Schurr, David A Zimmerman
  • Patent number: 7238231
    Abstract: An improved process is described for manufacturing zirconia-treated titanium dioxide pigments, wherein the zirconia treatment is accomplished in the process of fluidizing a titanium dioxide filter or press cake and then drying the same, through the addition to the filter or press cake of one or more alkaline water-soluble zirconium reagents selected from ammonium zirconyl carbonate, the water-soluble ammonium zirconyl carboxylates and mixtures of these. Aqueous solutions of such zirconium reagents, in addition to being effective for imparting a zirconia surface treatment to the titanium dioxide materials, also prove to be effective fluidizing agents for forming high solids dispersions of the zirconia-treated titanium dioxide pigment materials which can be spray dried without substantial dilution and excessive energy requirements.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: July 3, 2007
    Assignee: Tronox LLC
    Inventors: Daniel H. Craig, Jeffrey D. Elliott, Harmon E. Ray
  • Patent number: 7214363
    Abstract: Composite microparticles having thin coating layers can be simply prepared by bringing a host particle precursor into contact with a flame generated in a burner movably mounted at the bottom of a coating apparatus, by introducing the precursor in the form of a vapor or micronized liquid droplets upwardly into the burner, to obtain host particles; and introducing a gaseous coating precursor upwardly toward the host particles in or around the flame, the coating precursor being protected by an inert gas introduced therearound such that the formation of particles derived from the coating precursor itself is prevented.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: May 8, 2007
    Assignee: Seoul National University Industry Foundation
    Inventors: So won Sheen, Man Soo Choi
  • Patent number: 7144840
    Abstract: The present invention relates to a titanium dioxide material for coating on a substrate and method of making the same. The coated material is resistant to delamination and can be used for air-purification purposes.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: December 5, 2006
    Assignee: Hong Kong University of Science and Technology
    Inventors: King Lun Yeung, Nan Yao
  • Patent number: 7083852
    Abstract: A process for producing an ultrafine mixed-crystal oxide characterized by producing an ultrafine mixed crystal oxide comprising primary particles in a mixed crystal state with a BET specific surface area of 10 to 200 m2/g, comprising the step of subjecting a halogenated metal to high temperature oxidation with an oxidizing gas to produce a metal oxide by a vapor phase production method, wherein said halogenated metal is in the form of a mixed gas (a mixed halogenated metal gas) comprising at least two compounds having a different metal elements selected from the group consisting of chlorides, bromides, and iodides of titanium, silicon, and aluminum, and said mixed halogenated metal gas and said oxidizing gas are independently preheated to 500° C. or more prior to a reaction, a ultrafine mixed crystal oxide obtained by the process, and use of the oxide.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: August 1, 2006
    Assignee: Showa Denko K.K.
    Inventors: Jun Tanaka, Shinichiro Tomikawa
  • Patent number: 7029648
    Abstract: The present invention relates to a process for making durable titanium dioxide pigment by vapor phase deposition of surface treatments on the titanium dioxide particle surface by reacting titanium tetrachloride vapor, an oxygen containing gas and aluminum chloride in a plug flow reactor to form a product stream containing titanium dioxide particles; and introducing silicon tetrachloride into the reactor at a point down stream of the point where the titanium tetrachloride and oxygen were contacted and where at least 97% of the titanium tetrachloride has been converted to titanium dioxide or where the reaction temperature is no greater than about 1200° C., and preferably not more than about 1100° C.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: April 18, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Narayanan Sankara Subramanian, Russell Bertrum Diemer, Jr., Pratibha Laxman Gai
  • Patent number: 6994746
    Abstract: The present invention relates to a process for preparing satin white, wherein aluminum sulfate and calcium hydroxide are brought together batchwise in a planetary kneader mixer and react to form satin white. The satin white obtained by the present process has a superior quality and can be prepared in a very efficient manner.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 7, 2006
    Assignee: Ankerpoort, N.V.
    Inventors: Alois Johannes Gerardus Aarts, Jurgen Johannes Adrianus Broekman, Jan Maria Joseph Thewissen, Geert Dijkstra
  • Patent number: 6974611
    Abstract: A titanium oxide dispersion composition is provides, the composition comprising a solvent and a titanium oxide with an average secondary particle diameter of 100 nm or smaller, the dispersion composition having a maximum intensity within the range of from 435 nm to 700 nm of a primary differential spectrum of a transmittance spectrum, wherein the transmittance spectrum is measured using an ultraviolet-visible spectrophotometer after adjusting a solid content of the dispersion composition to be about 2% by weight. The composition provides a film having a high hydrophilicity under the irradiation of a visible light.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: December 13, 2005
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiaki Sakatani, Kensen Okusako, Hironobu Koike
  • Patent number: 6884289
    Abstract: The present invention relates to colored pigments based on multicoated platelet-shaped substrates which are distinguished by the fact that they comprise (A) a coating having a refractive index of n>1.8 and a layer thickness of 20-500 nm, (B) a colorless coating having a refractive index of n?1.8 and a layer thickness of 10-100 nm, (C) a colorless coating having a refractive index of n>1.8 and a layer thickness of 20-500 nm, (D) a covering of absorbent pigment particles having a particle size of 1-500 nm, and optionally (E) an outer protective layer, and to their use in paints, coatings, printing inks, plastics, ceramic materials, glasses, for laser marking, in cosmetic formulations and for the production of pigment preparations and dry preparations.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: April 26, 2005
    Assignee: Merck Patent Gmbh
    Inventors: Sabine Schoen, Christoph Schmidt
  • Patent number: 6852306
    Abstract: The present invention relates to a process for making durable titanium dioxide pigment by vapor phase deposition of surface treatments on the titanium dioxide particle surface by reacting titanium tetrachloride vapor, an oxygen containing gas and aluminum chloride in a plug flow reactor to form a product stream containing titanium dioxide particles; and introducing silicon tetrachloride into the reactor at a point down stream of the point where the titanium tetrachloride and oxygen were contacted and where at least 97% of the titanium tetrachloride has been converted to titanium dioxide or where the reaction temperature is no greater than about 1200° C., and preferably not more than about 1100° C.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Narayanan Sankara Subramanian, Russell Bertrum Diemer, Jr., Pratibha Laxman Gai
  • Patent number: 6835455
    Abstract: The present invention provides a process for producing ultrafine particulate complex oxide containing titanium oxide, including vapor-phase producing a complex oxide containing titanium oxide having a BET specific surface area of about 5 to about 200 m2/g, where a starting material gas containing titanium tetrachloride and an oxidizing gas are preheated to about 700° C. or more, and are reacted with a solution or a slurry of a salt containing a metallic element. The present invention also provides an ultrafine particulate complex oxide containing titanium oxide obtained by the process, and use of the oxide.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: December 28, 2004
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Jun Tanaka, Shinichiro Tomikawa