Treating Carbon Black Patents (Class 423/449.2)
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Patent number: 11892372Abstract: A disclosed component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.Type: GrantFiled: December 13, 2022Date of Patent: February 6, 2024Assignee: Lyten, Inc.Inventors: Michael Stowell, Carlos Montalvo, Jacques Nicole
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Patent number: 9796819Abstract: Provided is a process for producing a wet masterbatch which, without deteriorating a reinforcing property of a rubber composition and rubber physical properties, micronizes a filler slurry by controlling an amount of functional groups on a filler surface, and improves filler dispersibility in the rubber wet masterbatch and the rubber composition. The process for producing a wet masterbatch comprises: a step of producing a slurry solution having a pH of 8 or more by dispersing carbon black having an average amount of surface acidic functional groups (?eq/m2) of 0.15 or more and less than 3.00; a step of producing a mixture by mixing the slurry solution and a rubber latex solution in a liquid phase; and a step of drying the mixture.Type: GrantFiled: April 3, 2015Date of Patent: October 24, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Fumiteru Nishiura, Yukari Kanda, Kazuaki Someno
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Patent number: 9410953Abstract: The present invention relates to a formulations and methods for coupling a reactant (or probe precursor) to a functionalized surface for purposes of forming an arrayed sensor. This method includes the steps of: providing a surface having a reactive functional group; and introducing onto the surface, at a plurality of discrete locations, two or more compositions of the invention, which include a different reactant (probe precursor) and a non-nucleophilic additive, wherein such introduction is carried out under conditions effective to allow for covalent binding of the reactant to the surface via the reactive functional group. This results in a probe-functionalized array that substantially overcomes the problem of surface morphological anomalies on the array surface. Use of the resulting arrays in various detection systems is also encompassed.Type: GrantFiled: September 30, 2009Date of Patent: August 9, 2016Assignee: University of RochesterInventors: Charles R. Mace, Amrita R. Yadav, Benjamin L. Miller
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Publication number: 20150056127Abstract: The present disclosure relates to a process for obtaining carbon black powder with a sulfur content of less than 0.07%. The process includes step of reacting carbon black powder with a sulfur content of 1-2% with an alkali metal or salt thereof, in a fluid media, at a temperature in the range of 100 ° C. to 350 ° C. and pressure in the range of 10 to 500 psig. It is found that in accordance with the process of the present disclosure, the sulfur content was reduced substantially from that of about 1.25% to that of 0.05%, resulting in about 96% desulfurization.Type: ApplicationFiled: March 28, 2013Publication date: February 26, 2015Inventors: Sandeep Vasant Chavan, Harshad Ravindra Kini, Shobhit Gupta
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Patent number: 8895142Abstract: The present invention, in part, relates to a carbon black having a) a nitrogen BET surface area (BET) of from about 600 m2/g to about 2100 m2/g, b) a CDBP value in mL/100 g of from about (?2.8+(b*BET)) to about (108+(b*BET)), where b is 0.087 and BET is expressed in m2/g, and c) an apparent density (p, g/cm3) of at least about 0.820+q*BET, where q=?2.5×10?4, as determined at a compressive force (P) of 200 kgf/cm2 on dry carbon black powder. Energy storage devices, such as electrochemical double layer capacitors (EDLC's), containing the carbon black are also disclosed. Methods for making the carbon blacks and EDLC's made with them are also provided.Type: GrantFiled: October 28, 2010Date of Patent: November 25, 2014Assignee: Cabot CorporationInventors: Agathagelos Kyrlidis, Raymond M. Sawka, Geoffrey D. Moeser, Pavel A. Kossyrev, Ned J. Hardman
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Patent number: 8835351Abstract: An additive for hydroconversion processes includes a solid organic material having a particle size of between about 0.1 and about 2,000 ?m, a bulk density of between about 500 and about 2,000 kg/m3, a skeletal density of between about 1,000 and about 2,000 kg/m3 and a humidity of between 0 and about 5 wt %. Methods for preparation and use of the additive are also provided. By the use of the additive of the present invention, the hydroconversion process can be performed at high conversion level.Type: GrantFiled: November 7, 2012Date of Patent: September 16, 2014Assignee: Intevep, S.A.Inventors: Carlos Canelon, Angel Rivas, Omayra Delgado, Miguel Paiva, Giuseppe Di Sarli, Luis Zacaris
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Patent number: 8728432Abstract: A method of producing a surface-treated carbon black powder dispersion includes subjecting carbon black fine particles having a volume average particle size of 100 nm to 20 ?m to wet granulation and drying by heating to obtain granulated carbon black having a hardness of 12 cN or less and a pH of less than 7, grinding the granulated carbon black to obtain a ground product having a volume average particle size of 20 nm to 20 ?m, and subjecting the ground product to wet oxidization in an aqueous medium. The resulting surface-treated carbon black powder dispersion exhibits excellent print density, print quality, discharge stability, and storage stability when used as an inkjet printer aqueous black ink.Type: GrantFiled: July 9, 2010Date of Patent: May 20, 2014Assignee: Tokai Carbon Co., Ltd.Inventors: Hironori Arai, Masanobu Maeda
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Publication number: 20130295462Abstract: A carbon black having a combination of properties with values in ranges selected to promote high conductivity, high hydrophobicity, and reduced outgassing in lead acid batteries while maintaining high charge acceptance and cycleability. The carbon black has a Brunauer-Emmett-Teller (BET) surface area ranging from 100 m2/g to 1100 m2/g combined with one or more properties, e.g., a surface energy (SE) of 10 mJ/m2 or less, and/or a Raman microcrystalline planar size (La) of at least 22 ?, e.g., ranging from 22 ? to 50 ?. In some cases, the carbon black has a statistical thickness surface area (STSA) of at least 100 m2/g, e.g., ranging from 100 m2/g to 600 m2/g.Type: ApplicationFiled: April 4, 2013Publication date: November 7, 2013Inventors: Paolina Atanassova, Berislav Blizanac, Kenneth C. Koehlert, Geoffrey D. Moeser, Miodrag Oljaca, Yipeng Sun, Danny Pierre, Jeffrey S. Sawrey
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Patent number: 8574527Abstract: The invention relates to a process for aftertreating carbon black, wherein the carbon black is subjected to a carrier gas flow in a fluidized bed apparatus in the lower region of the apparatus, an additional gas stream is introduced into the fluidized bed apparatus, and the carbon black is aftertreated in the fluidized bed which arises.Type: GrantFiled: April 28, 2008Date of Patent: November 5, 2013Assignee: Evonik Carbon Black GmbHInventors: Frank Stenger, Klaus Bergemann, Manfred Nagel
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Patent number: 8420044Abstract: Carbon black with a content of polycyclic aromatic hydrocarbons measured by the 22 PAH method of less than 5 ppm and an STSA surface area of <90 m2/g. The carbon black is prepared by treating the starting carbon black with electromagnetic radiation. The carbon black can be used in rubber, plastics, printing inks, liquid inks, inkjet inks, toners, coating materials, paints, adhesives, batteries, pastes, paper, fuel cells, bitumen, concrete and other building materials.Type: GrantFiled: September 16, 2010Date of Patent: April 16, 2013Assignee: Evonik Carbon Black GmbHInventors: Klaus Bergemann, Manfred Dannehl, Ansgar Oelmann, Britta Schwartze, Christoph Tontrup
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Patent number: 8366970Abstract: A method for treating a carbon allotrope including providing a carbon allotrope selected from the group consisting of carbon black, amorphous carbon, glassy carbon, graphite, graphene, fullerenes, or a mixture thereof; surface treating the carbon allotrope by coupling the carbon allotrope with a polyhedral oligomeric silsesquioxane. Also described is a surface treated carbon allotrope having a polyhedral oligomeric silsesquioxane coupled to the surface of the carbon allotrope. Also described is a coating composite for imaging components including a film forming resin; and a plurality of polyhedral oligomeric silsesquioxane surface treated carbon allotrope particles substantially uniformly dispersed in the film forming resin, and imaging components including the coating composite.Type: GrantFiled: July 8, 2010Date of Patent: February 5, 2013Assignee: Xerox CorporationInventors: Brian Gilmartin, Jin Wu, Liang-Bih Lin
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Patent number: 8282905Abstract: The fullerenic structures include fullerenes having molecular weights less than that of C60 with the exception of C36 and fullerenes having molecular weights greater than C60. Examples include fullerenes C50, C58, C130, and C176. Fullerenic structure chemically bonded to a carbon surface is also disclosed along with a method for tethering fullerenes to a carbon material. The method includes adding functionalized fullerene to a liquid suspension containing carbon material, drying the suspension to produce a powder, and heat treating the powder.Type: GrantFiled: October 19, 2009Date of Patent: October 9, 2012Assignee: Massachusetts Institute of TechnologyInventors: Anish Goel, Jack B. Howard, John B. Vander Sande
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Patent number: 8236274Abstract: The invention relates to a carbon black having an aggregate size distribution which has a (d90-d10)/d50 ratio of less than or equal to 1.1. The carbon blacks are produced by admixing hot air if desired to a gas mixture comprising a carrier gas and a carbon black feedstock, passing the gas mixture into a burner pipe, burning the gas mixture at the burner pipe openings, and drawing the flames under suction, together with the ambient air drawn in freely under suction from the outside, through a cooled, narrowing gap, and carrying out cooling, the cooled, narrowing gap having a height (h) to width (b) ratio of 1-100, the width (b) being 0.5 to 10 mm, and the flow rate at the narrowest point of the gap being 10-200 m/s. The carbon blacks of the invention can be used as non-reinforcing filler, reinforcing filler, UV stabilizer, conductive black, pigment or reducing agent.Type: GrantFiled: August 3, 2007Date of Patent: August 7, 2012Assignee: Evonik Carbon Black GmbHInventors: Catharina Quitmann, Alfons Karl, Matthias Katzer, Kai Krauss, Michael Stanyschöfsky
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Patent number: 8119033Abstract: The present invention provides a granulated acetylene black which can be easily and well dispersed when it is incorporated in at least one of a resin and a rubber, the process for producing it, and its composition. A granulated acetylene black has an average aspect ratio of at most 1.1, an average maximum particle size of from 0.2 mm to 1 mm and an average particle size of from 0.2 to 0.6 mm. The granulated acetylene black is produced, after stirring and granulating a mixture containing from 35 to 50 mass % of an acetylene black original powder having an iodine adsorption amount of from 80 to 100 mg/g and a DBP absorption amount of from 140 to 220 ml/100 g and from 50 to 65 mass % of water, and subjecting to selection treatment, classification treatment or both treatments.Type: GrantFiled: October 19, 2007Date of Patent: February 21, 2012Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventor: Hiroshi Sakashita
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Patent number: 8034316Abstract: Carbon blacks, such as rubber blacks, having a low PAH concentration are described. Furthermore, elastomeric or rubber compositions containing the carbon black of the present invention are further described, as well as methods of making carbon black having a low PAH concentration.Type: GrantFiled: November 6, 2007Date of Patent: October 11, 2011Assignee: Cabot CorporationInventors: Irina S. Yurovskaya, William L. Sifleet, Steven J. List, Martin C. Green, Anand Prakash
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Publication number: 20110183489Abstract: An improved switching material for forming a composite article over a substrate is disclosed. A first volume of nanotubes is combined with a second volume of nanoscopic particles in a predefined ration relative to the first volume of nanotubes to form a mixture. This mixture can then be deposited over a substrate as a relatively thick composite article via a spin coating process. The composite article may possess improved switching properties over that of a nanotube-only switching article. A method for forming substantially uniform nanoscopic particles of carbon, which contains one or more allotropes of carbon, is also disclosed.Type: ApplicationFiled: March 29, 2011Publication date: July 28, 2011Inventors: Eliodor G. GHENCIU, Thomas RUECKES, Thierry YAO, Tom KOCAB
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Patent number: 7959890Abstract: The invention relates to recycled rubber produced by a process comprising the steps of: a) shredding cleaned rubber tires into shreds less than 2? long; b) pyrolyzing the shreds in a reaction chamber of a thermal processor in a first anaerobic environment to produce a char; c) drawing off volatile organics from the reaction chamber; c) removing the char from the reaction chamber; d) cooling the char in a second anaerobic environment; e) removing metal and textile components from the char to obtain pyrolytic carbon black; f) milling and sizing the pyrolytic carbon black so obtained into particles of 325 mesh size or smaller; and, g) utilizing the pyrolytic carbon black from the previous step in a polymerization process that produces said recycled rubber. It also relates to the high quality pyrolytic carbon black recovered from this process.Type: GrantFiled: February 1, 2010Date of Patent: June 14, 2011Assignee: RIPP Resource Recovery CorporationInventors: Andrew D. E. MacIntosh, Vincent W. Y. Wong
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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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Patent number: 7758841Abstract: The present invention is directed to novel processes for the functionalization (derivatization) of carbon nanotubes and, as an extension, to fullerenes and other carbon surfaces. Generally, such processes involve reductive pathways. In some embodiments, carbon nanotubes are reacted with alkali metal and organic halides in anhydrous liquid ammonia. In other embodiments, polymers are grown from carbon nanotube sidewalls by reacting carbon nanotubes with alkali metal and monomer species in anhydrous liquid ammonia.Type: GrantFiled: March 11, 2005Date of Patent: July 20, 2010Assignee: William Marsh Rice UniversityInventors: W. Edward Billups, Anil K. Sadana, Feng Liang, Robert H. Hauge
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Publication number: 20100119437Abstract: Carbon black, comprising particles having a number average particle size of Feret's diameter of 2 to 100 nm and an average roundness of 100 to 130.Type: ApplicationFiled: January 21, 2010Publication date: May 13, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Masafumi Uchida, Shingo Asai, Chifei Wu
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Patent number: 7700064Abstract: A carbon fiber having a total content of Li, Na, Ti, Mn, Fe, Ni and Co metal elements of no more than 50 ppm and a fiber diameter of 0.001 to 2 ?m and not branched and a assembly of a plurality of the carbon fibers.Type: GrantFiled: November 16, 2004Date of Patent: April 20, 2010Assignee: Teijin LimitedInventors: Hiroshi Sakurai, Tetsuo Ban, Masumi Hirata, Toru Sawaki
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Patent number: 7641882Abstract: The fullerenic structures include fullerenes having molecular weights less than that of C60 with the exception of C36 and fullerenes having molecular weights greater than C60. Examples include fullerenes C50, C58, C130, and C176. Fullerenic structure chemically bonded to a carbon surface is also disclosed along with a method for tethering fullerenes to a carbon material. The method includes adding functionalized fullerene to a liquid suspension containing carbon material, drying the suspension to produce a powder, and heat treating the powder.Type: GrantFiled: September 30, 2003Date of Patent: January 5, 2010Assignee: Massachusetts Institute of TechnologyInventors: Anish Goel, Jack B. Howard, John B. Vander Sande
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Publication number: 20090208751Abstract: The invention is directed to processes for increasing the surface area of a carbon black starting material and for forming mesoporous carbon black. The process includes the step of contacting a carbon black starting material having a first BET nitrogen surface area with an oxidant in a fluidized bed under conditions effective to form a carbon black product having a second BET nitrogen surface area greater than the first BET nitrogen surface area. The invention is also directed to carbon black product formed by this process.Type: ApplicationFiled: February 12, 2009Publication date: August 20, 2009Inventors: Martin C. Green, Roscoe Taylor, Geoffrey D. Moeser, Agathagelos Kyrlidis, Raymond M. Sawka
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Publication number: 20090155157Abstract: The invention relates to a process for aftertreating carbon black, wherein the carbon black is subjected to a carrier gas flow in a fluidized bed apparatus in the lower region of the apparatus, an additional gas stream is introduced into the fluidized bed apparatus, and the carbon black is aftertreated in the fluidized bed which arises.Type: ApplicationFiled: April 28, 2008Publication date: June 18, 2009Applicant: Evonik Degussa GmbHInventors: Frank Stenger, Klaus Bergemann, Manfred Nagel
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Patent number: 7541308Abstract: Fuel cells are described and contain a gas diffusion electrode, a gas diffusion counter-electrode, an electrolyte membrane located between the electrode and counter-electrode. The electrode or counter-electrode or both contain at least one modified carbon product. The electrolyte membrane can also or alternatively contain modified carbon products as well. The modified carbon product is a carbon product having attached at least one organic group. Preferably the organic group is a proton conducting group and/or an electron conducting group. The present invention preferably permits the elimination of fluoropolymer binder in the active or catalyst layer and further preferably leads to a thinner active layer and/or a thinner electrolyte membrane. Other uses and advantages are also described.Type: GrantFiled: March 29, 2002Date of Patent: June 2, 2009Assignee: Cabot CorporationInventor: Jameel Menashi
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Publication number: 20080159947Abstract: Carbon blacks, such as rubber blacks, having a low PAH concentration are described. Furthermore, elastomeric or rubber compositions containing the carbon black of the present invention are further described, as well as methods of making carbon black having a low PAH concentration.Type: ApplicationFiled: November 6, 2007Publication date: July 3, 2008Inventors: Irina S. Yurovskaya, William L. Sifleet, Steven J. List, Martin C. Green, Anand Prakash
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Patent number: 7328738Abstract: An improved heat exchanger which resists fouling of the heat exchange surface by minimizing the temperature difference between the heat exchanger surface and the fluid stream in contact with the heat exchange surface. In one embodiment, a heat exchanger comprises an outer shell, the outer shell comprising a first inlet operable to pass a first fluid stream, an inner shell at least partially disposed within the outer shell, the inner shell comprising a second inlet and an outlet operable to pass the first fluid stream, and a heat exchange surface comprising a plurality of tubes operable to pass a second fluid stream.Type: GrantFiled: May 28, 2003Date of Patent: February 12, 2008Assignee: Cabot CorporationInventors: Martin C. Green, William L. Sifleet
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Patent number: 7301061Abstract: The present invention is a utilization method for rubber-containing, organic industrial and municipal wastes which may be applied in the fields of petrochemical and chemical industry. Raw material is liquefied at 60-310° C. under 0.1-0.2 MP a pressure in aprotic hydrocarbon solvent in any neutral gas or CO2 atmosphere with simultaneous collection from reactor of liquid hydrocarbon fractions with the boiling temperatures reaching 200° C. and above and further rectification of fractions up to 200° C. and then drying solid residues at temperatures 270-310° C. Application of solvents and gases makes this process to be ecologically clean. The present invention makes possible a solution of the ecological problem of utilization of rubber-containing and other wastes.Type: GrantFiled: March 19, 2003Date of Patent: November 27, 2007Inventors: Igor Skworcow, Alexei Matveev
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Patent number: 7294185Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.Type: GrantFiled: March 22, 2004Date of Patent: November 13, 2007Assignee: Cabot CorporationInventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
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Patent number: 6962952Abstract: A process for production of a modified carbon black, at a cheaper cost, for rubber reinforcement having the superior tan ? temperature dependence of silica and an excellent abrasion resistance and further having no problems arising due to a low electrical conductivity is provided granulating the carbon black, after or while adding a water-dispersed silica to the carbon black in a granulator.Type: GrantFiled: February 12, 1998Date of Patent: November 8, 2005Assignee: The Yokohama Rubber Co., Ltd.Inventors: Masayuki Kawazoe, Tetsuji Kawazura
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Patent number: 6803026Abstract: This invention relates to carbon black pellets obtained by compaction of carbon black powder in the presence of auxiliary substances, which pellets, despite the compaction, surprisingly exhibit greater color intensity than the powders on which they are based.Type: GrantFiled: September 14, 2000Date of Patent: October 12, 2004Assignee: Bayer Chemicals AGInventors: Günter Linde, Uwe Hempelmann, Manfred Eitel
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Patent number: 6780389Abstract: A process for the production of modified carbon black, in which a carbon black dispersion containing carbon black, water and wetting agent, is mixed with an acid, aqueous solution or suspension of a primary amine and then reacted with sodium nitrite solution.Type: GrantFiled: July 25, 2002Date of Patent: August 24, 2004Assignee: Degussa AGInventors: Alfons Karl, Ralph McIntosh, Werner Kalbitz, Horst Kleinhenz, Gerd Tauber, Stephan Luedtke
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Patent number: 6780388Abstract: The present invention relates to (1) carbon powder having a primary particle size of 100 nm or less and an X-ray crystallite plane spacing C0 of less than 0.680 nm, preferably of 0.6730 nm or less, which shows a volume resistivity of 0.1 &OHgr;·cm or less in the pressurized state under a pressure of 2 MPa, and containing boron in a range of 0.1 to 5% by mass, (2) a method for producing the carbon powder, (3) an electrically conducting carbon composite powder wherein above-described carbon powder is mixed with fibrous carbon, particularly vapor grown carbon fiber, (4) a catalyst for solid polymer electrode fuel battery using above-described carbon powder or electrically conducting carbon composite powder, (5) a polymer electrolyte fuel battery cell using the catalyst, and (6) a polymer electrolyte fuel battery using the catalyst.Type: GrantFiled: May 31, 2001Date of Patent: August 24, 2004Assignee: Showa Denko K.K.Inventors: Tsutomu Masuko, Yoichi Nanba
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Patent number: 6770367Abstract: The invention provides a process for preparing a modified carbon black with an adhering layer of aluminum oxide and/or hydroxide. This process involves (a) impregnating a starting carbon black with a colloidal suspension formed by hydrolysis of a solution of aluminum alkoxide in an alcoholic solvent, (b) removing the alcoholic solvent by evaporation, and (c) heat-treating the black thus impregnated so as to transform the aluminuous layer present at its surface into an adhering layer of aluminum oxide and/or hydroxide. The modified carbon black prepared by the process is also provided.Type: GrantFiled: May 30, 2000Date of Patent: August 3, 2004Assignee: Compagnie Générale des Etablissements Michelin - Michelin & CieInventors: Emmanuel Custodero, Laure Simonot, Jean-Claude Tardivat
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Publication number: 20040109816Abstract: The present invention provides methods for the incorporation of sulfonate functional groups onto the surface of particulate carbonaceous materials and provides several surface-modified carbonaceous material compositions resulting therefrom. The composition can further comprise a conducting polymer. 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 sulfonating particulate carbonaceous material. The method can further comprise metallizing the sulfonated carbonaceous material.Type: ApplicationFiled: May 23, 2003Publication date: June 10, 2004Inventors: Bollepalli Srinivas, Anderson O. Dotson
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Patent number: 6740151Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.Type: GrantFiled: May 3, 2002Date of Patent: May 25, 2004Assignee: Cabot CorporationInventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
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Patent number: 6716372Abstract: The invention provides novel lithium-mixed metal materials which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-mixed metal materials. Methods for making the novel lithium-mixed metal materials and methods for using such lithium-mixed metal materials in electrochemical cells are also provided. The lithium-mixed metal materials comprise lithium and at least one other metal besides lithium. Preferred materials are lithium-mixed metal phosphates which contain lithium and two other metals besides lithium.Type: GrantFiled: October 19, 2001Date of Patent: April 6, 2004Assignee: Valence Technology, Inc.Inventors: Jeremy Barker, M. Yazid Saidi, Jeffrey Swoyer
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Publication number: 20040054033Abstract: A surface-treated carbon black obtained by coating the surface of carbon black with a mixture of (A) a silane compound having an amino group and (B) a silicon-containing compound having substantially all organic groups bonded with silicon through oxygen, whereby a resistance to heat buildup and abrasion resistance are improved and dispersability into a rubber compound is improved.Type: ApplicationFiled: July 7, 2003Publication date: March 18, 2004Inventor: Yoshiaki Kirino
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Publication number: 20040018140Abstract: A process for the production of modified carbon black, in which a carbon black dispersion containing carbon black, water and wetting agent, is mixed with an acid, aqueous solution or suspension of a primary amine and then reacted with sodium nitrite solution.Type: ApplicationFiled: July 25, 2002Publication date: January 29, 2004Applicant: DEGUSSA AGInventors: Alfons Karl, Ralph McIntosh, Werner Kalbitz, Horst Kleinhenz, Gerg Tauber, Stephan Luedtke
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Patent number: 6652641Abstract: A process for producing a modified carbon black for rubber reinforcement comprising: adding, to carbon black, water-dispersed silica and an organosilane compound having the formula (I): R1n—Si—(OR2)4-n (I) wherein R1 represents a hydrocarbon group having 1 to 10 carbon atoms, R2 represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, n is 1 or 2, and R1 and R2 may be the same or different, and mixing and dispersing the mixture.Type: GrantFiled: November 24, 1999Date of Patent: November 25, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventor: Tetsuji Kawazura
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Publication number: 20030213540Abstract: This invention relates to a composite of a melamine derivative, particularly a liquid melamine derivative, and carbon black. A representative melamine derivative is, for example, comprised of an alkoxymethylmelamine such as hexamethoxymethylmelamine. The invention further relates to a rubber composition containing such composite of a melamine derivative and carbon black and to a rubber composition containing such composite as a methylene donor in combination with a methylene acceptor and the reaction product thereof in situ within said rubber composition. Such rubber composition may be a component of an article of manufacture, which may contain or be exclusive of, wire reinforcement, such as for example a component of a tire, vehicular track or industrial belt or hose.Type: ApplicationFiled: April 8, 2003Publication date: November 20, 2003Inventors: Karen Elaine Burkholder, Kristine Nicole Ludwig, James Robert Tuttle
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Publication number: 20030180210Abstract: The invention concerns a method for producing post-treated carbon black, where the carbon black is fluidized in the fluidized bed while adding fluidizing agents and brought into contact with a post-treatment agent.Type: ApplicationFiled: February 24, 2003Publication date: September 25, 2003Inventor: Alfons Karl
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Publication number: 20030095914Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.Type: ApplicationFiled: May 3, 2002Publication date: May 22, 2003Inventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
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Publication number: 20030086860Abstract: The present invention provides a method of producing a porous carbon material in which a soft carbon-type carbon material is activated with alkali in the presence of a carboxylic acid ion and at least one metal ion selected from the group consisting of iron ions, cobalt ions, manganese ions and nickel ions. The method is capable of industrially producing a porous carbon material having a specific surface area per unit volume of 1000 (m2/cm3) or more in high yield and at low cost. The packing density of the porous carbon material can also be increased, and a high capacitance per unit volume can be obtained when the porous carbon material is used as a polarizable electrode material. Therefore, the present invention also provides an electrical double layer capacitor having a small size and a large capacitance, and using the porous carbon material as a polarizable electrode.Type: ApplicationFiled: September 21, 2001Publication date: May 8, 2003Inventors: Kenichi Uehara, Yoshihisa Murata
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Patent number: 6551393Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: wherein Ar represents an aromatic group; R1 represents a bond, an arylene group, an alkylene group, wherein R4 is an alkyl or alkylene group or an aryl or arylene group; R2 and R3, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, —OR5, —NHR5, —NR5R5, or —SR5, wherein R5, which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical.Type: GrantFiled: February 1, 2002Date of Patent: April 22, 2003Assignee: Cabot CorporationInventors: Wayne Devonport, Robert S. Whitehouse, Russell L. Warley, Thimma R. Rawalpally, Hairuo Tu
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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: 6525105Abstract: A method of separating a vulcanized or unvulcanized rubber into a rubber ingredient and a filler ingredient such as carbon black which comprises liquefying the vulcanized or unvulcanized rubber at ordinary temperature and ordinary pressure; and a method of separating from a rubber composite a component other than those. The methods comprise immersing, optionally with stirring, a rubber composite or a vulcanized rubber composition each in the form of a block in an organic solvent containing 0.01 to 50% peroxide such as benzoyl peroxide to liquefy the vulcanized rubber composition in the solvent and separating the filler ingredient and other components by centrifugal separation, membrane separation, or decantation.Type: GrantFiled: January 5, 2001Date of Patent: February 25, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventors: Yoshitaka Udagawa, Susumu Ashizawa
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Patent number: 6500401Abstract: A method of making carbon foam is described which involves pyrolizing a mixture containing at least one pyrolizable substance and at least one unpyrolizable material and then removing the unpyrolizable material to obtain the carbon foam. Carbon foam made by this process is also described. Incorporating the carbon foam in a variety of end use applications including electrodes, thermal insulation material, polymers, and the like is also described.Type: GrantFiled: March 13, 2001Date of Patent: December 31, 2002Assignee: Cabot CorporationInventors: Steven R. Reznek, Robert K. Massey
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Patent number: 6494946Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.Type: GrantFiled: February 25, 1999Date of Patent: December 17, 2002Assignee: Cabot CorporationInventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
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Publication number: 20020112646Abstract: A beaded black containing at least one pelletizing additive and at least one synthetic oil. The beaded black can be produced in a pelletizing machine and used as a filler and/or pigment in rubber and plastic articles and as a pigment for the production of printing inks.Type: ApplicationFiled: December 14, 2001Publication date: August 22, 2002Inventors: Karin Otto, Heinz Zoch, Jan Kopietz