Refractory Metal (ti, Zr, Hf, V, Nb, Ta, Cr, Mo, Or W) Patents (Class 423/492)
  • Patent number: 10273320
    Abstract: The instant invention provides a polyethylene composition and process for polymerizing the same. The polyethylene composition according to the present invention comprises the polymerization reaction of ethylene and optionally one or more ?-olefin comonomers in the presence of a catalyst system, wherein said polyethylene composition comprises at least 2 or more molecular weight distributions, measured via triple detector GPC low angle laser light scattering (GPC-LALLS), described in further details hereinbelow, wherein each molecular weight distribution has a peak, and wherein measured detector response of peak 1 divided by the measured detector response of peak 2 is in the range of from 0.50 to 0.79, for example from 0.55 to 0.77.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: April 30, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Ronald P. Markovich, Robert J. Jorgensen
  • Patent number: 10018583
    Abstract: A method for preparing a material composition comprising a hollow transition metal oxide nanoparticle supported upon a carbon material support includes a solution impregnation process step, followed by a thermal reduction process step and finally a thermal oxidation process step. The material composition, an electrode and an electrical component such as but not limited to a battery are all predicated at least in-part upon the material composition prepared in accord with the foregoing method. The foregoing material composition, electrode, battery and method may ultimately provide a LIB with enhanced performance.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: July 10, 2018
    Assignees: Cornell University, Huazhong University of Science and Technology
    Inventors: Yingchao Yu, Héctor D. Abruña, Deli Wang, Weidong Zhou, Liu Hongfang, Qin Shuang
  • Patent number: 9502163
    Abstract: The PTC circuit protection device includes a PTC polymer material and two electrodes attached to the PTC material. The PTC polymer material includes a polymer matrix and a conductive filler dispersed in the polymer matrix. The conductive filler includes first titanium carbide particles and second titanium carbide particles. The first titanium carbide particles have an average Fisher sub-sieve particle size of less than 2.5 ?m. The second titanium carbide particles have an average Fisher sub-sieve particle size of less than 3.2 ?m.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: November 22, 2016
    Assignee: FUZETEC TECHNOLOGY CO., LTD.
    Inventors: Jack Jih-Sang Chen, Chang-Hung Jiang
  • Publication number: 20150064100
    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: Application
    Filed: April 15, 2013
    Publication date: March 5, 2015
    Inventors: Bela Derecskei, Alexandre Jean Fines, Alastair Valentine
  • Patent number: 8906340
    Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: December 9, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Lisa Edith Helberg
  • Patent number: 8889094
    Abstract: The present disclosure relates to reacting tin metal with crude TiCl4 containing arsenic to produce pure TiCl4, SnCl4, and an arsenic solid co-product. In some embodiments, the contaminant vanadium is removed as well. In another embodiment, the vanadium is removed separately through a commercial process and the resulting arsenic containing commercial grade of purified TiCl4 is reacted with elemental tin, sulfur and ferric chloride to substantially reduce the arsenic. The reaction is preferably done in a continuous fashion in two stages for maximum through-put and utility at an elevated temperature. Distillation can be used to purify the TiCl4 produced and simultaneously yield a purified SnCl4 product. The synthesis of SnCl4 in this method utilizes waste chloride to save virgin chlorine which would otherwise be used.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 18, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Lisa Edith Helberg
  • Publication number: 20140154167
    Abstract: This disclosure relates to an improved process for preparing titanium tetrachloride comprising a first carbo-chlorination reaction comprising reacting ores comprising silica and/or zirconium with chlorine and a carbon compound at a temperature of about 900° C. to about 1300° C. to form an unscrubbed off gas comprising carbon monoxide, and using the unscrubbed off gas in a second carbo-chlorination reaction comprising titanium to form titanium tetrachloride.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 5, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: TIMOTHY J. BECNEL, Yung-Hsing Samson Hsu, Joseph J. Zaher, Charles David Musick
  • Patent number: 8691167
    Abstract: The present invention provides for a process for handling carbonyl sulfide waste and waste metal halides produced in industrial processes and, more particularly chlorination processes. The process includes the steps of hydrolyzing the carbonyl sulfide to produce a waste stream containing hydrogen sulfide and sulfidizing the resulting hydrogen sulfide containing stream with a solution of the waste metal halides. The resulting metal sulfide and metal halide-containing stream can be neutralized before disposal of the produced waste solids.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: April 8, 2014
    Assignee: Tronox LLC
    Inventor: Harry Eugene Flynn
  • Publication number: 20130330256
    Abstract: A method to recycle TiB2 articles, and in particular, a method to recycle a TiB2 feedstock including TiB2 articles and Ti-ore and/or Ti-slag by chlorination.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 12, 2013
    Inventors: Mark L. Weaver, Andrew L. Schnitgen, Robert A. DiMilia, Frankie A. Phelps, James C. McMillen
  • Publication number: 20130213819
    Abstract: A process for preparation of lower chlorides of titanium is provided, in which titanium tetrachloride (TiCl4) is reduced using a reducing agent in at least one molten alkali metal salt at a temperature of about 300 to about 1400° C. to obtain a reduced mass containing lower chlorides of titanium. A process for preparation of titanium metal from the lower chlorides of titanium is also provided.
    Type: Application
    Filed: October 24, 2011
    Publication date: August 22, 2013
    Inventor: Keki Hormusji Gharda
  • Patent number: 8415000
    Abstract: Stabilized precursor solutions can be used to form radiation inorganic coating materials. The precursor solutions generally comprise metal suboxide cations, peroxide-based ligands and polyatomic anions. Design of the precursor solutions can be performed to achieve a high level of stability of the precursor solutions. The resulting coating materials can be designed for patterning with a selected radiation, such as ultraviolet light, x-ray radiation or electron beam radiation. The radiation patterned coating material can have a high contrast with respect to material properties, such that development of a latent image can be successful to form lines with very low line-width roughness and adjacent structures with a very small pitch.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 9, 2013
    Assignee: Inpria Corporation
    Inventors: Jason K. Stowers, Alan J. Telecky, Douglas A. Keszler, Andrew Grenville
  • Publication number: 20120289617
    Abstract: An olefin metathesis catalyst and method for producing same is provided.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 15, 2012
    Applicant: Saudi Arabian Oil Company
    Inventors: Yuguo Wang, Cemal Ercan
  • Patent number: 8309042
    Abstract: The disclosure provides a process for recycling ore in the chloride process, without the build-up of silica-containing gangue in the chlorination reactor.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: November 13, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Matthew Donnel Eisenmann, Jorge Lavastida, Timothy Josiah McKeon, James Elliott Merkle, Jr.
  • Patent number: 8287838
    Abstract: A thermochemical water-splitting process all reactions of which operate at relatively low temperatures and high efficiencies, and in which relatively inexpensive materials and processing methods are made possible. This invention involves the decomposition of a metal halide compound, i.e., one which is capable of being reduced from a higher oxidation state to lower oxidation state, e.g. vanadium chloride III?vanadium dichloride. The process is cyclic and regenerative, and the only net inputs are water and heat; and the only net outputs are hydrogen and oxygen. The process makes it possible to utilize a wide variety of available heat, including solar, sources for the energy input.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: October 16, 2012
    Inventor: Steven Amendola
  • Publication number: 20110209294
    Abstract: An agent that is capable of improving dye fastness is provided. The agent includes a compound that includes at least one functional group capable of forming at least one interaction or at least one bond with a fiber or a dye molecule. Also, a method for using the agents to improve dye fastness and a dyed article including the agent are provided.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventor: Dong Hoon CHOI
  • Patent number: 7988946
    Abstract: The method allows ZrF4 to be converted into ZrO2, by carrying out a thermal conversion operation based on solid ZrF4 and water which are heated in a reactor until converted into ZrO2. The initial ratio by weight of ZrF4 to water is in particular between 1/5 and 1/500, and this ratio is maintained substantially for the entire duration of the conversion. The thermal conversion is carried out at a temperature greater than or equal to 300° C. The invention is used in particular for recycling pickling baths for zirconium alloys.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: August 2, 2011
    Assignee: Compagnie Europeenne du Zirconium-Cezus
    Inventors: Léonard Chittaro, David Lasalmonie
  • Publication number: 20110178336
    Abstract: A method of producing a phthaloyl dichloride compound, the method including: providing a compound represented by the following formula (1) and a compound represented by the following formula (2); and bringing the compound represented by the following formula (1) and the compound represented by the following formula (2) into reaction, so as to form a compound represented by the following formula (3), in the presence of at least one compound selected from a zirconium compound, a hafnium compound, and zinc oxide; wherein, in formulae, X represents a hydrogen atom, a halogen atom, a nitro group, a methyl group, or a methoxy group; when the X is plural, Xs may be the same or different from each other; n represents an integer of from 0 to 2; R represents a halogen atom, a chlorocarbonyl group, a low carbon number alkyl group, or a halogen-substituted low carbon number alkyl group; when the R is plural, Rs may be the same or different from each other; and m represents an integer of from 0 to 2.
    Type: Application
    Filed: July 27, 2009
    Publication date: July 21, 2011
    Inventors: Yoshikazu Kimura, Yoshihiro Takao, Toshimitsu Sugiyama, Takeshi Hanawa, Hiromichi Ito
  • Patent number: 7976818
    Abstract: A method for continuously recovering titanium tetrachloride TiCl4 from a waste liquid comprising TiCl4 and by-products, wherein said waste liquid is subjected, as a flowing liquid film, to an evaporation step for a residence time of less than 15 minutes at a temperature higher than 90° C.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: July 12, 2011
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Paolo Vincenzi, Rosa Spoto, Matteo Badalocchi
  • Publication number: 20110123424
    Abstract: Process for the phase transformation of substances and mixtures of substances, in which the substance or the mixture of substances is introduced into a plasma reactor, the substance or the mixture of substances is converted into the higher-energy phase and the product is removed in gaseous form from the plasma reactor. The process can be used for the sublimation of metal salts, metal nitrates and/or metal alkoxides and other vaporizable metal organic compounds.
    Type: Application
    Filed: May 7, 2009
    Publication date: May 26, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Aymee Lisette Michel De Arevalo, Patrik Stenner, Stefan Fiedler, Dieter Kerner, Manfred Nagel
  • Publication number: 20110052482
    Abstract: Vaporizable material is supported within a vessel to promote contact of an introduced gas with the vaporizable material, and produce a product gas including vaporized material. A heating element supplies heat to a wall of the vessel to heat vaporizable material disposed therein. The vessel may comprise an amoule having a removable top. Multiple containers defining multiple material support surfaces may be stacked disposed within a vessel in thermal communication with the vessel. A tube may be disposed within the vessel and coupled to a gas inlet. Filters, flow meters, and level sensors may be further provided. Product gas resulting from contact of introduced gas with vaporized material may be delivered to atomic layer deposition (ALD) or similar process equipment. At least a portion of source material including a solid may be dissolved in a solvent, followed by removal of solvent to yield source material (e.g., a metal complex) disposed within the vaporizer.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 3, 2011
    Applicant: ADVANCED TECHNOLOGY MATERIALS, INC.
    Inventors: John N. Gregg, Scott L. Battle, Jeffrey I. Banton, Donn K. Naito, Ravi Laxman
  • Patent number: 7858064
    Abstract: The invention relates to a titanium aquo-oxo chloride and to a method for its preparation. The compound is in the form of crystals and has the following composition by weight: 26.91% Ti; 21.36% Cl; and 4.41% H, which corresponds to the formula [Ti8O12(H2O)24]Cl8.HCl.7H2O. The method of preparation consists in hydrolyzing TiOCl2 either in an atmosphere whose moisture content is maintained between 50 and 60%, or by an alkali metal carbonate A2CO3, in order to obtain a titanium aquo-oxo chloride. The compound is useful as a semiconductor element of a photovoltaic cell or as a photocatalyst in air or water purification treatments.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: December 28, 2010
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Luc Brohan, Hari Sutrisno, Eric Puzenat, Annabelle Rouet, Hélène Terrisse
  • Publication number: 20100298578
    Abstract: The present disclosure discloses a catalyst for directly producing a lactide which is a cyclic ester used as a monomer for polylactides, and a method for directly producing a lactide using the catalyst, the method including the transesterification reaction between two molecules of an ester of lactic acid or a mixture containing the ester of lactic acid with a small amount of lactic acid and oligomer of lactic acid under an inert environment in the presence of a titanium-based catalyst or a catalyst mixture containing the titanium-based catalyst so as to produce lactide while simultaneously removing an alcohol (ROH) generated as a by-product.
    Type: Application
    Filed: September 21, 2009
    Publication date: November 25, 2010
    Applicant: Korea Research Institute of Chemical Technology
    Inventors: Jong-San Chang, Young-Kyu Hwang, Jung-Ho Lee, Jong-Min Lee, Min-Hee Jung
  • Patent number: 7824487
    Abstract: The invention covers a fine-particle, brilliant and strongly hiding rutile-based pigment that is devoid of any metal or reactive metal compounds relevant to mill abrasion detectable by application technology but whose particle-size in terms of particle diameters ranges from 50 to 1000 nm, for mono-, bi-, tri- or oligo-modal size distribution and a primary maximum ranges from 230 to 400 nm, wherein optionally for a bi- or poly-modal frequency distribution, a secondary maximum is less than 25% of the primary maximum between 400 and 1000 nm. The process for producing said pigment comprises treating an inorganic mixed-phase rutile structured oxide pigment by high-speed grinding in suspension in a ball grinding mill provided with a mechanically and chemically resistant coating until said particle-size and a substantially isometric rounded particle shape are attained. The invention optionally provides for viscosity adjustment and surface conditioning of the pigment.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: November 2, 2010
    Assignee: Heubach GmbH
    Inventor: Rainer Heubach
  • Patent number: 7799315
    Abstract: A thermochemical water-splitting process all reactions of which operate at relatively low temperatures and high efficiencies, and in which relatively inexpensive materials and processing methods are made possible. This invention involves the decomposition of a metal halide compound, i.e., one which is capable of being reduced from a higher oxidation state to lower oxidation state, e.g. vanadium chloride III?vanadium dichloride. The process is cyclic and regenerative, and the only net inputs are water and heat; and the only net outputs are hydrogen and oxygen. The process makes it possible to utilize a wide variety of available heat, including solar, sources for the energy input.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: September 21, 2010
    Inventor: Steven Amendola
  • Publication number: 20100196253
    Abstract: This disclosure relates to an improved process for preparing titanium tetrachloride comprising reacting ores comprising metal oxides with chlorine and a carbon compound at a temperature of about 900° C. to about 1300° C. to form the corresponding chlorides and off gas comprising carbon monoxide, wherein the metal in the metal oxide is selected from the group consisting of silicon, zircon and mixtures thereof, and wherein the carbon compound is selected from the group consisting of coke, charcoal, silicon carbide and mixtures thereof; and reacting titanium dioxide with a stream comprising off gases formed in the previous step to form titanium tetrachloride and carbon dioxide.
    Type: Application
    Filed: August 1, 2008
    Publication date: August 5, 2010
    Applicant: E. I. Du Pont De Nemours and Company
    Inventors: Timothy J. Becnel, Yung-Hsing Samson Hsu, Joseph J. Zaher, Charles David Musick
  • Patent number: 7658904
    Abstract: Process for the production of hydrogen by the thermochemical route from water, based on the chlorine/cerium cycle, in which, according to a first reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+4H2O=2CeO2+6HCl+H2;??(C) or in which, according to a second reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+2H2O=2CeOCl+4HCl;??(B?) 2CeOCl+2H2O=2CeO2+2HCl+H2;??(C?) and in which the reaction (B) for the chlorination of cerium oxide is carried out in the liquid phase, the cerium chloride passing into solution.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: February 9, 2010
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Roger Boen, Christophe Girold, Florent Lemort, Vlatko Materic
  • Patent number: 7592287
    Abstract: The present invention is related to a method for preparing an amorphous metal fluoride of the formula MX+FX?? comprising the steps of a) providing a precursor, whereby the precursor comprises a structure having a formula of Mx+F(x??)?yBy; and b) reacting the precursor with a fluorinating agent generating the amorphous metal flouride having a formula of Mx+Fx??, whereby M is selected from the group comprising metals of the second, third and fourth main group and any subgroup of the periodic table, B is a coordinately bound group; x is any integer of 2 or 3; y is any integer between 1 and 3; ? is 0 to 0.1; and x??>y.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: September 22, 2009
    Assignee: Humboldt-Universitaet Zu Berlin
    Inventors: Erhard Kemnitz, Udo Gross, Stephan Ruediger
  • Publication number: 20090074646
    Abstract: The efficiency of an etching process may be increased in various ways, and the cost of an etching process may be decreased. Unused etchant may be isolated and recirculated during the etching process. Etching byproducts may be collected and removed from the etching system during the etching process. Components of the etchant may be isolated and used to general additional etchant. Either or both of the etchant or the layers being etched may also be optimized for a particular etching process.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventors: Teruo Sasagawa, Xiaoming Yan
  • Patent number: 7465333
    Abstract: A precursor halide compound is reduced to a predetermined product at substantially ambient conditions. The halide is added to an anhydrous liquid reaction medium containing one or more alkali metals or alkaline earth metals as reductants. The metal reductants are dispersed as very small globules in the liquid by cavitation of the liquid, such as by application of high intensity ultrasonic vibrations or high-shear mixing to the reaction vessel. Continued cavitation of the liquid medium affects low temperature reduction of the precursor halide(s) to produce a metal, metal alloy, metal compound, ceramic material, metal matrix-ceramic composite material, or the like. The practice may be applied, for example, to titanium tetrachloride, alone or with other chlorides, to produce titanium metal, titanium alloys (for example Ti-6Al-4V), and titanium compounds (TiSi2).
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 16, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Ion C. Halalay, Michael P. Balogh, Michael K. Carpenter
  • Publication number: 20080305032
    Abstract: The disclosure is directed to a process for purifying a titanium chloride-containing feedstock using an activated carbon bed, comprising: (a) providing the titanium chloride-containing feedstock comprising an impurity, such as arsenic, and at least one tracker species selected from the group consisting of phosgene, carbonyl sulfide, sulfur dioxide, carbon disulfide, thionyl chloride, sulfur chloride, SO2Cl2, carbon dioxide, and hydrochloric acid and combinations thereof; (b) feeding the titanium chloride-containing feedstock to the activated carbon bed; (c) contacting the titanium chloride-containing feedstock with the activated carbon by flowing the feedstock through the activated carbon bed to remove at least a portion of both the tracker species and the impurity from the feedstock to form a treated product; (d) continuing the flow of the titanium chloride-containing feedstock at least until the tracker species is detected in the treated product; and (e) regenerating the activated carbon bed.
    Type: Application
    Filed: August 15, 2008
    Publication date: December 11, 2008
    Inventors: James Timothy Cronin, Lisa Edith Helberg
  • Publication number: 20080295645
    Abstract: A precursor halide compound is reduced to a predetermined product at substantially ambient conditions. The halide is added to an anhydrous liquid reaction medium containing one or more alkali metals or alkaline earth metals as reductants. The metal reductants are dispersed as very small globules in the liquid by cavitation of the liquid, such as by application of high intensity ultrasonic vibrations or high-shear mixing to the reaction vessel. Continued cavitation of the liquid medium affects low temperature reduction of the precursor halide(s) to produce a metal, metal alloy, metal compound, ceramic material, metal matrix-ceramic composite material, or the like. The practice may be applied, for example, to titanium tetrachloride, alone or with other chlorides, to produce titanium metal, titanium alloys (for example Ti-6Al-4V), and titanium compounds (TiSi2).
    Type: Application
    Filed: August 17, 2006
    Publication date: December 4, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Ion C. Halalay, Michael P. Balogh, Michael K. Carpenter
  • Patent number: 7455713
    Abstract: A titanium halide and, optionally, other precursor halides compound are reduced to a predetermined titanium product, suitably at or near ambient conditions. Titanium tetrachloride, for example, is added to an anhydrous liquid reaction medium containing one or more alkali metals or alkaline earth metals as reductants. The metal reductants are dispersed as very small globules in the liquid by cavitation of the liquid reaction medium, such as by application of high intensity ultrasonic vibrations or high-shear mixing to the reaction vessel. Continued cavitation of the liquid medium affects relatively low temperature reduction of the precursor halide(s) to produce a titanium-containing product such as titanium metal, a titanium alloy or compound, or a titanium matrix-ceramic composite material, or the like.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: November 25, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Ion C. Halalay, Michael P. Balogh
  • Patent number: 7368096
    Abstract: The disclosure is directed to a process for isolating solids from a purification purge stream comprising an impurity present as a solid, wherein the purification purge stream is substantially free of chlorides other than titanium tetrachloride and vanadium chloride, the process comprising the steps of: (a) atomizing the purification purge stream comprising titanium tetrachloride as a liquid and an impurity present as a solid; (b) drying solids in the atomized purification purge stream by contacting the atomized stream with a titanium tetrachloride vapor stream such that the combined streams reach a temperature of at least about 140° C. to vaporize the liquid titanium tetrachloride, wherein the titanium tetrachloride vapor is substantially free of chlorides other than those of titanium and vanadium, and substantially free of non-condensable gases comprising CO, CO2, N2, or mixtures thereof; and (c) separating the impurity present as a solid from the vaporized titanium tetrachloride.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 6, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Xuqing Gu, Stephen Erwin Lyke, Steve Mirabella, Joseph M. Shekiro, Jr., Jodi Lynn Witt
  • Publication number: 20080025909
    Abstract: The invention is a continuous process for producing titanium tetrachloride having a vanadium content of less than 5 ppm.
    Type: Application
    Filed: July 21, 2006
    Publication date: January 31, 2008
    Inventors: Ling Zhou, Frederick E. Schneider
  • Patent number: 7232556
    Abstract: Nanoparticles comprising titanium, such as nanoscale doped titanium metal compounds, inorganic titanium compounds, and organic titanium compounds, their methods of manufacture, and methods of preparation of products from nanoparticles comprising titanium are provided.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: June 19, 2007
    Assignee: NanoProducts Corporation
    Inventor: Tapesh Yadav
  • Patent number: 7125535
    Abstract: An efficient process for forming anhydrous metal halides includes the reaction of a metal powder with a hydrogen halide under anhydrous conditions. In one example, manganese powder is reacted with hydrogen chloride under anhydrous reaction conditions.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: October 24, 2006
    Assignee: Afton Chemical Corporation
    Inventor: Abbas Kadkhodayan
  • Patent number: 7087209
    Abstract: A method for producing halide brine wherein an alkali and a reducing agent are added to an aqueous fluid having a density greater than 8.30 lb/gal., (0.996 kg/L) water, waste water or sea water for example. The resulting fluid is then contacted with a halogen to form a halide brine. The reaction occurs in a conventional reactor such as a mixing tank.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: August 8, 2006
    Assignee: Tetra Technologies, Inc.
    Inventors: Raymond D. Symens, Lyle H. Howard, Surendra Kumar Mishra, Thomas William Polkinghorn
  • Patent number: 7021487
    Abstract: A metal container to be filled with a halogen containing gas, with the inner surface processed with a polishing agent. The gas has a reduced purity decline by the increase of the water content or impurities from the inner surface of the container which is absorbed by the gas over the passage of time. The inner surface processing method is improved such that the value of dividing the area of the Si2s peak by the area of the Fe2p3/2 peak in the X-ray photoelectron spectrum of the gas container inner surface with the inner surface process with a polishing agent applied is 0.3 or less.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: April 4, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akio Kikkawa, Shigeo Kanayama, Isao Harada
  • Patent number: 6929786
    Abstract: A method of separating zirconium and hafnium tetrachlorides using a solvent comprising firstly an alkaline metallic solvent comprising a salt made up of an alkali metal chloride and an acidic metal chloride A, for example a chloroaluminate or an alkaline chloroferrate, and secondly an acidic metal or metalloid chloride B of acidity that is less than that of the acidic metal chloride A. The acidic metal or metalloid chloride B may be selected from chlorides of Mg, Zn, and Cu. The method may be a continuous separation method by selective absorption of the tetrachloride vapors by the solvent in the substantially or totally molten state.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: August 16, 2005
    Assignee: Compagnie Europeenne du Zirconium CEZUS
    Inventors: Laurence Delons, Gérard Picard, Delphine Tigreat
  • Patent number: 6896866
    Abstract: A method for purifying tungsten hexafluoride of high purity, capable of producing tungsten hexafluoride of higher purity than that of the related art, readily and at a low cost. A method for purifying tungsten hexafluoride of high purity, characterized in that tungsten hexafluoride containing molybdenum hexafluoride as an impurity, makes contact with a layer, in which a metal or an alloy is packed, containing at least one of molybdenum, tungsten, copper, nickel, iron, cobalt, zinc, titanium, aluminum, calcium, and magnesium at a temperature ranging from 0° C. to 100° C.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: May 24, 2005
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Masahide Waki, Kazuyuki Fujimoto, Yoshinori Nakagawa
  • Patent number: 6841141
    Abstract: A system for in-situ generation of fluorine radicals and/or fluorine-containing interhalogen compounds XFn (wherein X is Cl, Br, or I, and n is an odd integer). Such system comprises a fluorine source, a halogen source for supplying halogen species other than fluorine, a chamber for mixing fluorine with halogen species other than fluorine, and an energy source to supply energy to such chamber to facilitate reaction between fluorine and the halogen species other than fluorine. The chamber may be a semiconductor processing chamber, wherein the in situ generated fluorine radicals and/or fluorine-containing interhalogens are employed for cleaning the processing chamber.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: January 11, 2005
    Assignee: Advanced Technology Materials, Inc.
    Inventors: Jose I. Arno, W. Karl Olander
  • Patent number: 6770255
    Abstract: The specification discloses a process for recovering chlorine from a chlorinator waste. The process involves treating the chlorinator waste with oxygen in a fluidised bed under conditions which promote the conversion of metal chlorides to metal oxides and discourage the oxidation of carbon contained in the waste. Suitable conditions include a bed temperature in a range from 400 to 700° C., a superficial velocity in a range from 0.2 to 1 metre/second and stoichiometric ratio, R, in a range from 0.2 to 1.2.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: August 3, 2004
    Assignee: The Commonwealth of Australia Commonwealth Scientific and Industrial Research Organization
    Inventors: Viruthiamparambath Rajakumar, Damien Bowyer O'Connell Harding
  • Patent number: 6770254
    Abstract: This invention relates to an improved process for removing trace levels of Group IVb contaminants from a Group IVb metal tetrahalide of and particularly to a process for removing zirconium tetrachloride from titanium tetrachloride. The improvement resides in contacting a titanium tetrachloride feedstock containing trace impurities of zirconium tetrachloride or hafnium tetrachloride with a sufficient amount of titanium hydride to convert any zirconium tetrachloride or hafnium tetrachloride to a lower volatile compound. The resultant mixture is distilled and the titanium tetrachloride separated from the lower volatile zirconium or hafnium compounds.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: August 3, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Heather Regina Bowen, David Allen Roberts
  • Publication number: 20030170168
    Abstract: The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a first aqueous hydrochloric-acid solution of titanium oxychloride, where, in the first separation stage (2), small droplets of hydrochloric-acid titanium oxychloride solution (3) are flowed with the exhaust gas flow, and larger droplets of hydrochloric-acid titanium oxychloride solution are flowed counter current to the exhaust to remove the smaller droplets and ensure that virtually no droplets are carried to a second separation stage. In the second separation stage, a second titanium oxychloride solution is injected into a second reactor (9), the second solution having a lower titanium oxychloride concentration than that injected in the first separation stage.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 11, 2003
    Inventors: Hans-Joerg Bonath, Michael Ebert, Andreas Kade, Frank Malcharek, Josef Mayer, Dirk Wolff
  • Publication number: 20030165419
    Abstract: The invention relates to a method of separating zirconium and hafnium tetrachlorides using a solvent comprising firstly an alkaline metallic solvent comprising a salt made up of an alkali metal chloride and an acidic metal chloride A, for example a chloroaluminate or an alkaline chloroferrate, and secondly an acidic metal or metalloid chloride B of acidity that is less than that of the acidic metal chloride A. The acidic metal or metalloid chloride B is preferably selected from chlorides of Mg, Zn, and Cu. The method may be a continuous separation method by selective absorption of the tetrachloride vapors by the solvent in the substantially or totally molten state.
    Type: Application
    Filed: April 25, 2003
    Publication date: September 4, 2003
    Inventors: Laurence Delons, Gerard Picard, Delphine Tigreat
  • Patent number: 6562312
    Abstract: The present invention is a process for controlling, at an aim point, the passivation of aluminum chloride in the chlorinator discharge stream in a process for making titanium tetrachloride.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: May 13, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: James Timothy Cronin, Thomas Shields Elkins, Hans Hellmut Glaeser, Lisa Edith Helberg, Angela Ruth Strzelecki
  • Publication number: 20020179427
    Abstract: A process of purifying titanium tetrachloride by first refluxing titanium tetrachloride (TiCl4) with copper powder, rendering the impurities of vanadium, niobium and antimony nonvolatile, and then in a single step fractionally distilling the refluxed mixture to effectively and substantially reduce any arsenic, tin, niobium and vanadium in the titanium tetrachloride.
    Type: Application
    Filed: May 21, 2001
    Publication date: December 5, 2002
    Inventors: John Burnham Goddard, Michael Mark Litwin
  • Publication number: 20020127397
    Abstract: Separable nanotubes are made from a transition metal oxide, preferably from a vanadium oxide of variable valence. They show a greater oxidation resistance than the carbon-based nanotubes known so far and offer many new and economic applications. The inventive nanotubes clearly show oxidation-reduction activities and are particularly suited as an active material for catalytic reactions.
    Type: Application
    Filed: January 19, 2001
    Publication date: September 12, 2002
    Inventors: Reinhard Nesper, Michael Spahr, Markus Niederberger, Petra Bitterli
  • Publication number: 20020110514
    Abstract: The method for recovering a titanium compound according to the invention comprises bringing a waste solution containing a titanium alkoxide into contact with a halogenating agent to convert at least apart of the titanium alkoxide to a titanium halide and then distilling the solution containing the titanium halide to recover the titanium halide from the solution, or comprises distilling a waste solution containing a titanium alkoxide and a titanium halide to recover at least a part of the titanium halide from the waste solution, bringing a residue in distiller given after the distillation into contact with a halogenating agent to convert at least a part of the titanium alkoxide to a titanium halide, and distilling the solution containing the titanium halide to recover the titanium halide from the solution. According to the method of the invention, a larger amount of a titanium compound can be recovered from a waste solution containing a titanium alkoxide.
    Type: Application
    Filed: November 28, 2001
    Publication date: August 15, 2002
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takumi Kitahara, Tetsuya Nakano
  • Patent number: 6423291
    Abstract: The invention provides a process for the production of titanium tetrachloride (TiCl4) by the chlorination of titanium values in a titanium-containing starting material. The process includes exposing the starting material to a chlorinating agent and contacting the starting material with an inert liquid while the starting material is exposed to the chlorinating agent. The inert liquid is at a temperature of 200-350° C. and is at a pressure of 5-100 atmospheres (1 atmosphere=101.325 kN/m2). This causes the starting material to react with the chlorinating agent to form TiCl4. The invention also extends to TiCl4 whenever made in accordance with the method.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: July 23, 2002
    Inventors: Andrew Kenneth Stone, David Steyn Van Vuuren, Kevin Frans Pieter Cilliers