Patents Assigned to Columbian Chemicals Company
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Patent number: 7847009Abstract: The present invention claims that a carbon black with unique morphological properties provides improved carbon black dispersion and improved rubber compound properties, such as improved fatigue life and abrasion resistance. The carbon black of current invention has a ratio of aggregate size HI and particle size HI greater than 1.70, the surface area STSA of 100-180 M2/g and the structure OAN less than 140 cc/100 g.Type: GrantFiled: November 17, 2008Date of Patent: December 7, 2010Assignee: Columbian Chemicals CompanyInventors: Weidong Wong, Charles R. Herd, Jorge A. Ayala
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Publication number: 20090163617Abstract: The present invention claims that a carbon black with unique morphological properties provides improved carbon black dispersion and improved rubber compound properties, such as improved fatigue life and abrasion resistance. The carbon black of current invention has a ratio of aggregate size HI and particle size HI greater than 1.70, the surface area STSA of 100-180 M2/g and the structure OAN less than 140 cc/100 g.Type: ApplicationFiled: November 17, 2008Publication date: June 25, 2009Applicant: Columbian Chemicals Company (a Delaware Corporation)Inventors: Weidong WONG, Charles R. Herd, Jorge A. Ayala
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Patent number: 7459103Abstract: A composition comprising particulate carbonaceous material and a conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing with ozone a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material. The method grafts the conducting polymer to the carbonaceous material. The method can further comprise metallizing the polymer-grafted carbonaceous material.Type: GrantFiled: February 25, 2004Date of Patent: December 2, 2008Assignee: Columbian Chemicals CompanyInventor: Bollepalli Srinivas
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Patent number: 7413683Abstract: A composition comprising particulate carbonaceous material and a sulfonated conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material and sulfonating the polymer or the monomer. The method grafts the sulfonated conducting polymer to the carbonaceous material. The method can further comprise metallizing the polymer-grafted carbonaceous material.Type: GrantFiled: May 23, 2003Date of Patent: August 19, 2008Assignee: Columbian Chemicals CompanyInventor: Srinivas Bollepalli
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Patent number: 7390441Abstract: A composition comprising particulate carbonaceous material and a sulfonated conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing with ozone a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material and sulfonating the polymer or the monomer. The method grafts the sulfonated conducting polymer to the carbonaceous material. The method can further comprise metallizing the polymer-grafted carbonaceous material.Type: GrantFiled: February 25, 2004Date of Patent: June 24, 2008Assignee: Columbian Chemicals CompanyInventor: Srinivas Bollepalli
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Patent number: 7241334Abstract: The present invention provides methods for the incorporation of sulfonate functional groups onto the surface of carbonaceous compounds and materials, and similarly provides several surface modified carbonaceous compounds and materials resulting therefrom.Type: GrantFiled: August 28, 2002Date of Patent: July 10, 2007Assignee: Columbian Chemicals CompanyInventor: Bollepalli Srinivas
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Patent number: 7238741Abstract: A carbon black with a ?D50/M greater than about 0.9 was produced. The carbon black has an aggregate heterogeneity index (HI) via QTM of greater than about 2.3. The carbon black has a ?D50 via DCP of greater than about 0.07 ?m. The QTM-HI of the present carbon black is unique for N100-200 series carbon blacks, as is the ?D50. The carbon black is a N200 carbon black with an oil absorption number (OAN) less than about 135 ml/100 g and a HI of greater than about 2.3. The carbon black is also a N200 carbon black with an oil absorption number (OAN) less than about 135 ml/100 g and a ?D50 of greater than about 0.07 ?m. The present invention also relates to a polymeric composition and to tires comprising a carbon black of the present invention.Type: GrantFiled: May 13, 2004Date of Patent: July 3, 2007Assignee: Columbian Chemicals CompanyInventors: Weidong Wang, Charles R. Herd, Jorge A. Ayala
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Patent number: 7195834Abstract: A composition comprising particulate carbonaceous material and a conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material wherein the oxidative polymerization takes place in the presence of a metal-containing oxidizing agent. The method grafts the conducting polymer to the carbonaceous material while essentially simultaneously metallizing the composition.Type: GrantFiled: September 2, 2003Date of Patent: March 27, 2007Assignee: Columbian Chemicals CompanyInventor: Bollepalli Srinivas
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Patent number: 7175930Abstract: A composition comprising particulate carbonaceous material and a conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material. The method grafts the conducting polymer to the carbonaceous material. The method can further comprise metallizing the polymer-grafted carbonaceous material.Type: GrantFiled: May 23, 2003Date of Patent: February 13, 2007Assignee: Columbian Chemicals CompanyInventor: Bollepalli Srinivas
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Patent number: 7167240Abstract: Disclosed is a method for in-situ sampling and measuring particulate fineness in a process stream, comprising (a) sampling particles in-situ from a process stream, (b) adjusting the sample to conditions suitable for LII, (c) measuring the fineness using LII, and (d) correlating the LII fineness measurement with actual particle fineness. Also disclosed is a method for sampling and controlling a process based on the real-time, on-line, in-situ methods for sampling and measuring particles. Sampling can comprise drawing a sidestream from a source of the particles. Adjusting the sample to conditions suitable for LII can comprise diluting the sample or bringing the temperature of the sample to ambient conditions. Correlating may comprise using a correlation function determined by comparing LII measurements and laboratory fineness measurements for particle samples drawn at the same time.Type: GrantFiled: July 18, 2003Date of Patent: January 23, 2007Assignee: Columbian Chemicals CompanyInventor: Barry James Stagg
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Patent number: 6958308Abstract: A method for producing dispersed metal particles on a substrate and the compositions produced is disclosed. A method for producing the particles comprises exposing an organometallic and a particulate substrate to supercritical or near supercritical fluid under conditions to form a mixture of the fluid and the organometallic, allowing the mixture to remain in contact with the substrate for a time sufficient to deposit dispersed organometallic onto the substrate, venting the mixture, thereby adsorbing the organometallic onto the substrate, and reducing the dispersed organometallic to dispersed metal particles with a reducing agent.Type: GrantFiled: March 16, 2004Date of Patent: October 25, 2005Assignee: Columbian Chemicals CompanyInventor: Garth Desmond Brown
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Patent number: 6831194Abstract: The present invention provides a method for the preparation of carbonaceous materials comprising a plurality of gamma-keto-carboxyl containing functional groups surface bonded thereto, and further provides several surface modified carbonaceous materials resulting therefrom.Type: GrantFiled: August 28, 2002Date of Patent: December 14, 2004Assignee: Columbian Chemicals CompanyInventor: Bollepalli Srinivas
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Patent number: 6608132Abstract: The invention relates to an improved carbon black for tire tread rubber. More particularly, the invention relates to a carbon black which imparts upon tire tread rubber improved treadwear, lower rolling resistance, lower heat buildup and improved tear resistance. The improved carbon black is in the N100 series and, when in rubber, combines the long tread wear and low heat buildup advantages N121 carbon black with the high tear resistance properties of N115 or N110. The improved carbon black has particular application to truck and bus steel cord radial tire treads, especially for use in on/off highway conditions, and for high performance passenger car tires.Type: GrantFiled: November 21, 1997Date of Patent: August 19, 2003Assignee: Columbian Chemicals CompanyInventors: Francis G. Bomo, Ronald A. Swor
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Patent number: 6533859Abstract: The invention comprises a composition comprising a combination of carbon black and at least one surface treating agent selected from the group consisting of quinone compounds, quinoneimine compounds and quinonediimine compounds, as well as methods of obtaining the composition and the use of the composition in dispersing carbon black in a natural or synthetic polymer. The composition achieves increased dispersibility and improved mixing characteristics of the carbon black and improved processability of the carbon black containing polymer.Type: GrantFiled: May 21, 2001Date of Patent: March 18, 2003Assignees: Flexsys America L.P., Columbian Chemicals CompanyInventors: Rakshit Lamba, Frederick Ignatz-Hoover
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Patent number: 6189768Abstract: A process and apparatus that would hydraulically compress the external sleeve onto the inner APH tube, without deforming the inner surface of the APH tube during the process. The system would include a heating tube of the type having a continuous wall portion and a bore therethrough; a sleeve positionable around the heating tube, the diameter of the sleeve slightly larger than the diameter of the heating tube; a contracting assembly securably atop the end portions of the heating tube and the surrounding sleeve; an insert positionable within the bore of the tube, for defining a protective member along a portion of the inner wall of the tube; a contour ring moveable along the outer surface of the sleeve for compressing the sleeve wall against the tube wall to define a sealable gap between a portion of the sleeve and a portion of the tube.Type: GrantFiled: May 27, 1999Date of Patent: February 20, 2001Assignee: Columbian Chemicals CompanyInventors: Janek Porowski, David Lewis, Wallace Murray, Marvin Skiff
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Patent number: 6120594Abstract: A process for the oxidation of carbon black with an aqueous mixture of hydrogen peroxide where carbon blacks are mixed with aqueous hydrogen peroxide then dried in order to efficiently oxidize industrial quantities of carbon black using standard carbon black production equipment and production rates and under conditions that produce no hazardous emissions and require no special handling.Type: GrantFiled: April 28, 1999Date of Patent: September 19, 2000Assignee: Columbian Chemicals CompanyInventors: John Carleton Curtis, Rodney L. Taylor, George A. Joyce
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Patent number: 5708055Abstract: What is disclosed is an improved thermoplastic composition for use in wire and cable manufacturing processes, which features the use of from about 15 to 45 percentage by weight of a modified furnace carbon black having a specific surface area of from about 35 to 250 m.sup.2 /g, preferably 35 to 60 m.sup.2 /g, as measured by the nitrogen adsorption surface area method. The modified carbon black is prepared by combining the carbon black with a specified amount of amine, under certain conditions, and heating the reactive mixture for an extended period.Type: GrantFiled: February 16, 1996Date of Patent: January 13, 1998Assignee: Columbian Chemicals CompanyInventors: George Alfred Joyce, Edward Lester Little
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Patent number: 5538261Abstract: A sealing system for heat exchangers of the type having a plurality of vertically positioned heat tubes extending through a heat tube sheet for exchanging heat between the interior of the plurality of heat tubes to the surrounding atmosphere, the sealing system including a first outer ring having a wall portion, terminating in an upper face, and defining an annular space between the lower end portion of the outer ring and the heat tube and tube sheet; a high nickel metal inner ring, positioned within the annular space surrounding the heat tube and resting on the tube sheet; a soft metal casing partially housing the high nickel inner ring so that when force is applied downward on the first outer ring, the annular space is reduced sufficiently to force the high nickel ring and the soft metal casing into a sealing relationship between the heat tube and the tube sheet, while allowing for vertical movement of the heat tube; the outer ring further defining a means to prevent the high nickel ring and the soft metalType: GrantFiled: August 2, 1994Date of Patent: July 23, 1996Assignee: Columbian Chemicals CompanyInventors: Wallace G. Murray, Janek Porowski
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Patent number: 5494955Abstract: A method of improving balance of properties, such as increased reinforcement and reduced rolling resistance of a rubber compound, comprising mixing the rubber compound with a carbon black and a silane coupling agent for a period of between about 10 seconds and 20 minutes at a temperature of between about 160.degree. C. and 180.degree. C. such as a styrene butadiene rubber compound, is disclosed. The method involves mixing the rubber compound "in situ" with a carbon black and Bis(3-triethoxysilylpropyl)-tetrasulfane at ambient temperature.Type: GrantFiled: April 8, 1994Date of Patent: February 27, 1996Assignee: Columbian Chemicals CompanyInventors: Ronald A. Swor, Rodney L. Taylor
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Patent number: 5375730Abstract: An unloading valve for hopper cars used for transporting dry fluent material such as carbon black. An unloading pipe extends outwardly from the bottom of the hopper, and a closure removably attaches at the end of the pipe. The closure includes a plug extending within the pipe and presenting a surface that confronts the dry fluent material adjacent the inner end of the pipe. This surface has an angle selected to cause fluent material loaded into the hopper to become packed at the inner end of the pipe during loading and subsequent shipment of the hopper car. When the closure is removed for attaching an unloading conduit to the pipe, the packed material at the inner end of the pipe prevents any of that material from leaking out the pipe before the unloading conduit can be connected.Type: GrantFiled: February 26, 1993Date of Patent: December 27, 1994Assignee: Columbian Chemicals CompanyInventors: Andrew J. Bahr, Luigi P. Simonelli, Wallace G. Murray