Patents Assigned to Kerr-McGee Chemical, LLC
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Patent number: 7114533Abstract: A process for increasing the bulk density of an aerated powder is provided. The powder is placed in a container. The container is then closed and the gas pressure within the container is increased to a level above atmospheric pressure and at a rate sufficient to cause the powder to compact before a substantial portion of said pressurization gas diffuses into said powder. In one embodiment, the process is utilized to increase the bulk density of an aerated, free-flowing titanium dioxide pigment. Apparatus for carrying out the process is also provided.Type: GrantFiled: September 23, 2004Date of Patent: October 3, 2006Assignee: Kerr-McGee Chemical, LLCInventors: James William Bates, Thomas Ian Brownbridge
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Patent number: 7011703Abstract: Inorganic pigments, having deposited on the pigment surface at least one alkenyl- or alkyl-substituted succinic anhydride and at least one organic polyol, possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.Type: GrantFiled: June 24, 2005Date of Patent: March 14, 2006Assignee: Kerr-McGee Chemical LLCInventor: Daniel H. Craig
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Patent number: 6994117Abstract: Liners useful as piping elbow liners comprising a body liner, a tangential inlet liner, and a tangential outlet liner. The tangential inlet liner and the tangential outlet liner can be removably inserted into a cavity in the body liner. The body liner can comprise two substantially-identical body section liners.Type: GrantFiled: September 25, 2003Date of Patent: February 7, 2006Assignee: Kerr-McGee Chemical, LLCInventors: Harry Eugene Flynn, Robert O. Martin, Charles A. Natalie
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Patent number: 6981666Abstract: Improved methods for producing titanium dioxide slurries. The output from a micronizer is passed through a condenser to condense the steam and form an aqueous slurry of titanium dioxide, which can in most cases then be further concentrated as desired or which can be sold or used without further concentration, instead of passing the micronizer output to apparatus for separating the TiO2 from the steam, as is currently practiced in the art. The resultant slurry from the condenser is in a further refinement preferably sent to an agitated storage tank together with dispersant and anti-settling compounds to aid in preventing settling of the titanium dioxide solids out of the slurry. To help facilitate condensation of the steam/pigment mixture sent to the condenser, a portion of the condensed slurry is in yet a further refinement pumped from the slurry storage tank to a heat exchanger. The output from the heat exchanger is then fed to the condenser to facilitate the condensing of the steam in the condenser.Type: GrantFiled: July 7, 2003Date of Patent: January 3, 2006Assignee: Kerr-McGee Chemical, LLCInventors: Thomas Ian Brownbridge, Jeffrey Austin Engle
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Patent number: 6962434Abstract: Methods and apparatus for detecting wear in a liner. In one embodiment of the present invention, an electrically conductive wire is placed on or near the outside surface of the liner and the electrical resistance in the electrically conductive wire is measured to determine whether the wire has worn through. In another embodiment of the present invention, the temperature measured by a temperature measuring device, such as a thermocouple, is monitored over time to estimate wear in the liner.Type: GrantFiled: September 25, 2003Date of Patent: November 8, 2005Assignee: Kerr-McGee Chemical, LLCInventors: Robert O. Martin, Joe Bert Maker, Lonnie G. Hewell
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Patent number: 6958091Abstract: Inorganic pigments treated with at least one amide of a fatty acid and an aliphatic amine possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.Type: GrantFiled: September 7, 2004Date of Patent: October 25, 2005Assignee: Kerr-McGee Chemical LLCInventor: Daniel H. Craig
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Patent number: 6946028Abstract: Inorganic pigments treated with one or more of the ?,?-dialkyl substituted linear or branched carboxylic acids and the salts thereof possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.Type: GrantFiled: September 7, 2004Date of Patent: September 20, 2005Assignee: Kerr-McGee Chemical LLCInventor: Daniel H. Craig
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Patent number: 6851896Abstract: A fluid barrier along the inside surface of ductwork between a reactor and subsequent product separation and recovery apparatus to reduce the buildup of solids on the ductwork from a gaseous product mixture conveyed through the ductwork. Barrier fluid is sprayed along the internal surface of the ductwork to form a fluid barrier and cool the gaseous mixture. The barrier fluid can be comprised of a component of the gaseous mixture. The barrier fluid can be a liquid at the second temperature and converted to a gaseous state in the ductwork, using the heat of vaporization of the barrier fluid to help cool the gaseous mixture.Type: GrantFiled: September 18, 2003Date of Patent: February 8, 2005Assignee: Kerr-McGee Chemical, LLCInventors: Harry Eugene Flynn, Robert O. Martin, Charles A. Natalie
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Patent number: 6843282Abstract: A process for increasing the bulk density of an aerated powder is provided. The powder is placed in a container. The container is then closed and the gas pressure within the container is increased to a level above atmospheric pressure and at a rate sufficient to cause the powder to compact before a substantial portion of said pressurization gas diffuses into said powder. In one embodiment, the process is utilized to increase the bulk density of an aerated, free-flowing titanium dioxide pigment. Apparatus for carrying out the process is also provided.Type: GrantFiled: March 17, 2004Date of Patent: January 18, 2005Assignee: Kerr-McGee Chemical, LLCInventors: James William Bates, Thomas Ian Brownbridge
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Patent number: 6835361Abstract: The present invention provides improved processes and apparatus for reacting high flow rates of one or more gaseous reactants in tubular reactors. The improved processes and apparatus allow such reactions to be carried out with a low pressure drop across the reactor and without excessive erosion due to solid particles carried with or picked up by the gaseous reactants. A process of this invention is basically comprised of the steps of swirling a gaseous reactant which may contain or pick up solid particles in a first annular plenum chamber followed by a second larger diameter annular plenum chamber and then introducing the gaseous reactant and solid particles into a reactor by way of two or more radial slots whereby said gaseous reactant and solid particles are caused to flow into said reactor and are uniformly distributed therein.Type: GrantFiled: March 30, 2001Date of Patent: December 28, 2004Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Charles A. Natalie
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Patent number: 6752858Abstract: A novel air knife. The novel air knife is circumferential. That is, the novel air knife injects a gas stream along the inside walls of the air knife. The air knife can be advantageously placed at or near the entrance to a suspension vessel to reduce buildup of solid materials transported to the suspension vessel. The gas stream is injected at a rate sufficient to reduce the buildup of solid materials on the walls of the air knife (and thus at the entrance to the suspension vessel). The air circumferential air knife is particularly useful in a TiCl4 production process for reducing buildup of hygroscopic cyclone dust at the entrance to a suspension vessel.Type: GrantFiled: December 13, 2002Date of Patent: June 22, 2004Assignee: Kerr-McGee Chemical, LLCInventors: Harry Eugene Flynn, Joe Bert Maker, Leslie E. Crowder, Johnny B. Perkins
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Patent number: 6699317Abstract: Improved methods for producing titanium dioxide slurries. The output from a micronizer is passed through a condenser to condense the steam and form an aqueous slurry of titanium dioxide, which can in most cases then be further concentrated as desired or which can be sold or used without further concentration, instead of passing the micronizer output to apparatus for separating the TiO2 from the steam, as is currently practiced in the art. The resultant slurry from the condenser is in a further refinement preferably sent to an agitated storage tank together with dispersant and anti-settling compounds to aid in preventing settling of the titanium dioxide solids out of the slurry. To help facilitate condensation of the steam/pigment mixture sent to the condenser, a portion of the condensed slurry is in yet a further refinement pumped from the slurry storage tank to a heat exchanger. The output from the heat exchanger is then fed to the condenser to facilitate the condensing of the steam in the condenser.Type: GrantFiled: March 27, 2003Date of Patent: March 2, 2004Assignee: Kerr-McGee Chemical, LLCInventors: Thomas Ian Brownbridge, Jeffrey Austin Engle
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Patent number: 6638401Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.Type: GrantFiled: July 6, 2000Date of Patent: October 28, 2003Assignee: Kerr-McGee Chemical LLCInventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell
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Patent number: 6544328Abstract: A process for preparing an improved pigment which is readily dispersible in paints and plastics concentrates is provided. In accordance with the process, a particulate pigment is mixed with water to form a slurry thereof, and a surface active agent is mixed with the slurry so that the pigment therein is coated therewith. A preferred surface active agent is a mixture of ethoxylated sorbitan derivatives, non-ethoxylated mono and diglycerides and ethoxylated mono and diglycerides. After the pigment has been coated with the surface active agent, the coated pigment is dried.Type: GrantFiled: January 26, 2001Date of Patent: April 8, 2003Assignee: Kerr-McGee Chemical LLCInventors: Bruce L. Roberts, Jeffrey D. Elliott, Ronnie L. Hoskins, Bruce R. Palmer
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Patent number: 6527941Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising specific amounts of sulfuric acid and manganese sulfate in the electrolytic cell and maintaining the amounts of the sulfuric acid and manganese ion in the solution at a ratio of sulfuric acid to manganese ion greater than 2. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot and the high discharge capacity EMD produced is deposited on the anodic electrode.Type: GrantFiled: December 22, 2000Date of Patent: March 4, 2003Assignee: Kerr-McGee Chemical, LLCInventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell
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Patent number: 6419893Abstract: An improved process for producing titanium dioxide wherein gaseous titanium tetrachloride and oxygen are reacted at a high temperature to produce particulate solid titanium dioxide and gaseous reaction products is provided. The titanium dioxide and gaseous reaction products are cooled by passing them through a tubular heat exchanger along with a scouring medium for removing deposits from the inside surfaces of the tubular heat exchanger. By this invention, the particulate scouring medium, the particulate titanium dioxide and the gaseous reaction products are caused to follow a spiral path as they flow through the tubular heat exchanger whereby the scouring medium more thoroughly removes the deposits and the titanium dioxide and gaseous reaction products are cooled more efficiently.Type: GrantFiled: September 18, 2000Date of Patent: July 16, 2002Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Charles A. Natalie, Harry E. Flynn, Bita Fillipi
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Patent number: 6419832Abstract: A process for removing dissolved uranium from water is provided. The process basically comprises (a) mixing phosphoric acid or particulate bone ash with the water, (b) mixing calcium hydroxide with the mixture produced in step (a) to thereby form calcium hydroxy phosphate or calcium hydroxy apatite which reacts with and complexes at least a portion of the uranium in the water to form a precipitate thereof, and (c) separating the precipitate from the water.Type: GrantFiled: March 6, 2000Date of Patent: July 16, 2002Assignee: Kerr-McGee Chemical LLCInventors: Garet Edward Van De Steeg, Anand S. Paranjape
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Patent number: 6350427Abstract: Processes for reacting high flow rates of one or more gaseous reactants in tubular reactors. The improved processes allow such reactions to be carried out with a low pressure drop across the reactor and without excessive erosion due to solid particles carried with or picked up by the gaseous reactants. A process of this invention is basically comprised of the steps of swirling a gaseous reactant which may contain or pick up solid particles in a first annular plenum chamber followed by a second larger diameter annular plenum chamber and then introducing the gaseous reactant and solid particles into a reactor by way of two or more radial slots whereby the gaseous reactant and solid particles are caused to flow into the reactor and are uniformly distributed therein.Type: GrantFiled: July 27, 1999Date of Patent: February 26, 2002Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Chuck A. Natalie
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Patent number: 6248477Abstract: Intercalation compositions having spinel structures with crystallites of metal oxides (M2O3) dispersed throughout the structure are provided having the general formula Li1+xMyMn2−x−yO4. Methods of producing the intercalation compositions and rechargeable lithium batteries containing the compositions are also provided.Type: GrantFiled: September 29, 1999Date of Patent: June 19, 2001Assignee: Kerr-McGee Chemical LLCInventors: Wilmont Frederick Howard, Jr., Stephen Wilfred Sheargold, Monte Sean Jordan, Joe Lane Bledsoe
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Patent number: 6214198Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.Type: GrantFiled: December 21, 1998Date of Patent: April 10, 2001Assignee: Kerr-McGee Chemical LLCInventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell