Product Having Elemental Carbon Patents (Class 523/215)
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Patent number: 6730731Abstract: A thermally conductive polymer composition includes polymer matrix such as thermoplastic resin or thermoplastic elastomer and a graphitized carbon fiber which serves as a thermally conductive filler. The graphitized carbon fiber is made from a mesophase pitch. The mesophase pitch is spun, infusibilized, carbonized, pulverized, and graphitized to form powdery graphitized carbon fibers. Preferably, the graphitized carbon fibers have a diameter of 5-20 &mgr;m, an average particle size of 10-500 &mgr;m, and a density of 2.20-2.26 g/cm3. The composition may be molded to form a thermally conductive molded article such as a thermally conductive sheet. The thermally conductive polymer composition and thermally conductive molded article have high thermal conductivity and transfer large amounts of heat from electric or electronic parts.Type: GrantFiled: August 31, 2001Date of Patent: May 4, 2004Assignee: Polymatech Co., LTDInventors: Masayuki Tobita, Natsuko Ishihara, Naoyuki Shimoyama, Shinya Tateda
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Patent number: 6720369Abstract: A process for preparing silica-filled rubber powder is provided, which includes contacting a salt-containing silica-precipitation suspension with at least one selected from the group including a rubber latex, rubber solution, and rubber emulsion, to form a mixture; and precipitating to produce a silica-filled rubber powder. A silica-filled rubber powder prepared by the process, and compositions and uses containing the same, are also provided.Type: GrantFiled: November 15, 2001Date of Patent: April 13, 2004Assignee: PKU Pulverkautschuk Union GmbHInventors: Udo Goerl, Reinhard Stober, Matthias Schmitt, Andreas Gouw
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Patent number: 6709506Abstract: An aggregate including a carbon phase and a silicon-containing species phase is described, wherein a difference between BET (N2) surface area and t-area of the aggregate is from about 2 to 10 m2/g; a difference between BET (N2) surface area and t-area of from about 1 to 50 m2/after HF treatment; a ratio of from about 0.1 to 10; a weight average aggregate size measured by DCP after HF treatment that is reduced by about 5% to 40%; a silica ash content in the aggregate of from about 0.05% to 1% based on the weight of the aggregate after HF treatment and based on ash resulting from silicon-containing compound; and a BET surface area of silica ash in the aggregate of from about 200 m2/g to 700 m2/g, wherein the silicon-containing species phase is present primarily at the surface of the aggregate.Type: GrantFiled: October 11, 2001Date of Patent: March 23, 2004Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Yakov Kutsovsky
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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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Patent number: 6699319Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.Type: GrantFiled: May 6, 2002Date of Patent: March 2, 2004Assignee: Cabot CorporationInventors: Curtis E. Adams, Ronald J. Gambale
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Patent number: 6686409Abstract: A method of making an aggregate having a carbon phase and a silicon-containing species phase is described and includes introducing a carbon black-yielding feedstock and a silicon-containing compound feedstock into different stages of a multi-stage reactor. The reactor operates at a sufficient temperature to decompose the silicon-containing compound and to form a carbon black phase from the carbon black-yielding feedstock. At least one of the feedstocks may include a diluent, such as an alcohol, water, and aqueous based solution, and mixtures thereof.Type: GrantFiled: August 10, 2001Date of Patent: February 3, 2004Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Yakov Kutsovsky
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Patent number: 6667353Abstract: A rubber composition comprised of an elastomer(s) reinforced with a particulate carbon black composite, and a coupling agent. Said carbon black composite contains integral silica on the surface thereof, wherein said carbon black composite is prepared by co-precipitating carbon black and silica from a dispersion of carbon black in sodium silicate to provide integral silica domains on the outer surface of the carbon black. Said carbon black composite is further functionalized by reacting it with a trialkoxy silane. A tire having a component comprised of such rubber composition, such as, for example, a tire tread is contemplated.Type: GrantFiled: December 12, 2000Date of Patent: December 23, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Giorgio Agostini, Thierry Florent Edme Materne
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Patent number: 6660791Abstract: The invention relates to articles of manufacture, such as for example, tires and industrial products, which have at least one component comprised of a rubber composition which contains particles of pre-sulfur vulcanized rubber (e.g. ground recycled rubber) and high purity trithiodipropionic acid, wherein said trithiodipropionic acid is preferably provided as particles of a carbon black composite comprised of carbon black and said high purity trithiodipropionic acid. Said high purity trithiodipropionic acid is comprised of polythiodipropionic acids containing at least 80 weight percent trithiodipropionic acid based upon said polythiodipropionic acids.Type: GrantFiled: June 29, 2001Date of Patent: December 9, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, George Frank Balogh
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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: 20030205171Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.Type: ApplicationFiled: May 6, 2002Publication date: November 6, 2003Inventors: Curtis E. Adams, Ronald J. Gambale
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Publication number: 20030195291Abstract: A process for preparing a modified pigment having attached at least one organic group is described. This process comprises the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent. The dried mixture is reacted under high intensity mixing conditions for a time and temperature sufficient to form the modified pigment.Type: ApplicationFiled: April 12, 2002Publication date: October 16, 2003Inventors: Melanie G. Lamprey, John Mathew, Paul S. Palumbo
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Publication number: 20030195276Abstract: Elastomer composite blends are produced by novel wet/dry mixing methods and apparatus. In the wet mixing step or stage, fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor. The particulate filler fluid is fed under high pressure to the mixing zone, such as to form a jet stream to entrain elastomer latex fluid sufficiently energetically to substantially completely coagulate the elastomer with the particulate filler prior to the discharge end. Highly efficient and effective elastomer coagulation is achieved without the need for a coagulation step involving exposure to acid or salt solution or the like. Novel elastomer composites are produced.Type: ApplicationFiled: November 8, 2001Publication date: October 16, 2003Inventors: Melinda Ann Mabry, Ting Wang, Ivan Zlatko Podobnik, James A. Shell, Allan Clark Morgan, Bin Chung, Noboru Tokita
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Publication number: 20030166744Abstract: The invention relates to a thermosetting resin composition consisting of a radically curable resin mixture consisting of: (a) 50-100 parts by weight of a radically curable resin that also contains a free monomer capable of copolymerising with it; (b) 0-50 parts by weight of a shrink-resistant compound that can also contain an amount of copolymerisable free monomer, the total of (a) and (b) adding up to 100, and 2D-randomly distributed, discontinuous carbon fibres obtained by chopping split, continuous carbon fibre bundles to form packages of carbon filaments, which carbon bundles are provided with a sizing that is at least partially chemically bonded thereto, and with a binder whose solubility at room temperature in the copolymerisable free monomer present in the radically curable resin mixture amounts to at least 10% by weight, the weight percentage of carbon fibres relative to the resin composition being between 5 and 65% by weight, and optionally a filler also being present.Type: ApplicationFiled: February 6, 2003Publication date: September 4, 2003Inventors: Hans Klaas Van Dijk, Gerardus Hubertus Anna Janse, Hans Hubertus Henricus Hornman, Antonius Franciscus Maria Josephus Van Der Ploeg
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Patent number: 6586501Abstract: An aggregate having attached at least one type of polymer is described, wherein the aggregate comprises at least one carbon phase and at least one silicon-containing species phase. Other aggregates which can have a polymer attached include, but are not limited to, an aggregate comprising at least one carbon phase and at least one metal-containing species phase and carbon black at least partially coated with silica. Methods of making the aggregate are further described which involve combining the starting aggregate with a reactive polymer and mixing in order to attach the polymer onto the aggregate. Uses of the aggregate are further described such as incorporating the aggregate into polymer foams and other polymeric products as well as elastomeric products. Polymer foam compositions are also described and contain polymer foam and chemically modified carbonaceous filler, specifically, carbonaceous filler having polymer moieties chemically bonded to the carbonaceous particulates.Type: GrantFiled: January 19, 2000Date of Patent: July 1, 2003Assignee: Cabot CorporationInventors: Dennis M. Dalton, David A. Kinsman, Lynn M. Krajkowski, Adam L. MacKay, Agathagelos Kyrlidis
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Patent number: 6562883Abstract: Fine-particle, filled rubber powders prepared by precipitation from aqueous mixtures of a filler suspension and a rubber-latex emulsion in the absence of water-soluble salts of metals of groups IIa, IIb, IIIa, or VIII of the Periodic Table of the Elements and in the absence of alkali metal silicate are used for vulcanizable rubber mixtures.Type: GrantFiled: February 26, 2001Date of Patent: May 13, 2003Assignee: PKU Pulverkautschuk Union GmbHInventors: Udo Goerl, Reinhard Stober, Matthias Schmitt
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Patent number: 6555609Abstract: This invention relates to a conjugated diene-based rubber composition reinforced with silica-based reinforcement together with a non-silane coupling agent as a combination of 1-thioglycerol(3-mercapto-1,2-propanediol) and 2,2′-benzothiazyl disulfide. Said coupling agent materials may be provided for mixing with said diene-based rubber(s), for example, as individual materials, as at least one of said materials being supported on a carbon black carrier or as being pre-reacted, or otherwise pre-treated, with synthetic silica aggregates. The invention includes an article of manufacture, including a tire, having at least one component comprised of such rubber composition.Type: GrantFiled: September 14, 2000Date of Patent: April 29, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, Kevin James Pyle, Richard Robinson Smith, Paul Harry Sandstrom
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Patent number: 6538071Abstract: This invention relates to a rubber mixture containing a nitrile rubber, a metal salt of an acrylate, a liquid acrylate and optionally other additives, a process for its preparation, and use for all types of molded articles, in particular roller coatings.Type: GrantFiled: September 1, 2000Date of Patent: March 25, 2003Assignee: Bayer AktiengesellschaftInventor: Erich Fuchs
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Publication number: 20030040553Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance in the absence of a coupling agent, lower hysteresis at high temperature and comparable or increased hysteresis at low temperature compared to an elastomer containing an untreated carbon black. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: ApplicationFiled: July 10, 2002Publication date: February 27, 2003Inventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis, James A. Belmont
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Patent number: 6521691Abstract: This invention relates to preparation of a rubber composition by pre-mixing at least one rubber compounding ingredient with an aqueous emulsion, or latex, of at least one elastomer. The invention also contemplates the use of such rubber composition, or blend of such rubber composition with at least one additional elastomer and/or rubber compounding ingredient, as a component of an article of manufacture. Such article of manufacture may be, for example, a tire. Such article may also be an industrial product such as, for example, a hose or belt such as a conveyor belt or power transmission belt.Type: GrantFiled: September 18, 2000Date of Patent: February 18, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Giorgio Agostini, Rene Jean Zimmer
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Patent number: 6503964Abstract: A thermally conductive and electromagnetic interference and radio frequency reflective polymer composition and a method for creating the same is disclosed. Thermally conductive filler material is coated with a thermally conductive and electromagnetic interference and radio frequency reflective coating material and mixed with a base polymer matrix. The mixture is molded into the desired shape. The electromagnetic interference and radio frequency reflective coating material prevents the absorption and transfer of EMI and RF waves through the filler material thus resulting in an EMI and RF reflective composition.Type: GrantFiled: January 10, 2001Date of Patent: January 7, 2003Assignee: Cool Options, Inc.Inventors: Lyle James Smith, Mikhail Sagal, James D. Miller, Kevin A. McCullough
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Publication number: 20030004228Abstract: This invention relates to preparation of a rubber composition by pre-mixing at least one functionalized carbon black with an organic solvent solution or aqueous emulsion of at least one host elastomer. Functionalized carbon blacks for the purposes of this invention preferably contain a functional moiety on their surface to aid in promoting covalent bonds between the functionalized carbon black and said host polymer. The invention also contemplates the use of such rubber composition, or blend of such rubber composition with at least one additional elastomer and/or rubber compounding ingredient, as a component of an article of manufacture. Such article of manufacture may be, for example, a tire. Such article may also be an industrial product such as, for example, a hose or belt such as a conveyor belt or power transmission belt.Type: ApplicationFiled: July 2, 2001Publication date: January 2, 2003Inventors: Giorgio Agostini, Thierry Florent Edme Materne
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Publication number: 20020188039Abstract: The invention relates to a collection of composite plateletlike particles comprising a core and at least one coating layer consisting essentially of a compound having from 60 to 95% by weight of carbon and from 5 to 25% by weight of nitrogen, the balance to 100% being selected from elements of the group consisting of hydrogen, oxygen and sulfur.Type: ApplicationFiled: May 17, 2002Publication date: December 12, 2002Inventors: Ryuichi Takahashi, Adrian Schulthess, Kimiya Takeshita, Fritz Herren, Patrice Bujard
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Patent number: 6479571Abstract: Elastomeric compositions contain at least one elastomer and a polymer coated modified carbon product wherein the polymer at least partially coats the modified carbon product. The modified product preferably has at least one organic group attached to the carbon product and the organic group is preferably substituted with an ionic, ionizable, or polar group for preparation in polar or aqueous based media. Methods of making the polymer coated modified carbon product are also described, such as by aqueous-based or solvent free polymerization methods, organic solvent based polymerization methods, or solution coating methods. Polymeric products and masterbatches containing the polymer coated modified carbon products are also described as well as methods to improve properties such as impact properties and tensile properties.Type: GrantFiled: April 3, 2000Date of Patent: November 12, 2002Assignee: Cabot CorporationInventors: Joel M. Cooke, Charles H. Honeyman, Robert M. Amici, Peter A. Lovell, John L. Stanford, Rosa Casado Portilla
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Patent number: 6476115Abstract: This invention relates to a conjugated diene-based rubber composition reinforced with silica-based reinforcement together with a non-silane coupling agent as N-3-(1,2-dihydroxypropyl)-N-oleylammonium bromide and/or N-3-(1,2-dihydroxypropyl)-N-methyl-2-mercaptoimidazolium bromide for endeavoring to both couple synthetic aggregates of precipitated silica to elastomers and enhancing electrical conductivity of such rubber compositions which contain less than 25 parts by weight carbon black per 100 parts by weight elastomer. Said coupling agent materials may be provided for mixing with said diene-based rubber(s), for example, as individual materials, as at least one of said materials being supported on a carbon black carrier or as being pre-reacted, or otherwise pre-treated, with synthetic silica aggregates. The invention includes an article of manufacture, including a tire, having at least one component comprised of such rubber composition.Type: GrantFiled: August 31, 2001Date of Patent: November 5, 2002Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson Gibson Wideman, David John Zanzig
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Publication number: 20020160193Abstract: There is provided a particulate conductive filler which comprises a noble metal coating formed over a non-noble metal coating over an inner carbon-based core. The conductive filler is used in conjunction with a polymer matrix to form composite materials for conductive applications.Type: ApplicationFiled: February 21, 2001Publication date: October 31, 2002Inventors: Karel Hajmrle, Jones Y. Zhang, Brian William Callen
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Patent number: 6462122Abstract: A nanocomposite concentrate composition comprising about 10 weight percent to about 90 weight percent of a layered silicate material and about 10 weight percent to about 90 weight percent of a matrix polymer comprising about 90-99.5% by weight of a polyolefin and about 0.5% to about 10%, preferably about 1% to about 6% by weight, of a maleic anhydride-modified polyolefin, based on the total weight of polyolefins, wherein the layered silicate material is dispersed uniformly throughout the matrix polymer. Shearing of the concentrate and later (after shear) addition of an added matrix polymer avoids thermal degradation of the added matrix polymer and optimizes the dispersion of the nanomer throughout the matrix polymer; provides increased tensile strength; and reduces degradation of the polymer by melt formation of a concentrate thereby decreasing heat degradation of added matrix polymer.Type: GrantFiled: March 1, 2000Date of Patent: October 8, 2002Assignee: AMCOL International CorporationInventors: Guoqiang Qian, Tie Lan, Aaron M. Fay, Anthony S. Tomlin
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Patent number: 6448309Abstract: Disclosed are elastomeric compounds including an elastomer and a silicon-treated carbon black, and optionally including a coupling agent. The elastomeric compound exhibits poorer abrasion resistance in the absence of a coupling agent, lower hysteresis at high temperature and comparable or increased hysteresis at low temperature compared to an elastomer containing an untreated carbon black. A variety of elastomers and formulations employing such elastomers are contemplated and disclosed. Elastomeric compounds incorporating an elastomer and an oxidized, silicon-treated carbon black are also disclosed. Also disclosed are methods for preparing elastomers compounded with the treated carbon black.Type: GrantFiled: March 21, 2001Date of Patent: September 10, 2002Assignee: Cabot CorporationInventors: Khaled Mahmud, Meng-Jiao Wang, Robert A. Francis, James A. Belmont
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Patent number: 6444727Abstract: A rubber composition which comprises a rubber component comprising at least one rubber selected from natural rubber and synthetic diene rubbers and, per 100 parts by weight of the rubber component, 30 to 200 parts by weight of a modified carbon black having at a surface thereof an Si—O—C structure or an Si—C structure in which the carbon atom bonded directly to the Si atom is an aromatic carbon atom, and a pneumatic tire prepared by using the rubber composition. The modified carbon black can be obtained by bringing carbon black into contact with a silicon compound, such as a compound represented by a general formula: (R1O)mSiR24−m in a gas phase (in the formula, R1 represents an alkyl group having 1 to 3 carbon atoms, R2 represents an alkyl group having 1 to 3 carbon atoms or phenyl group and m represents an integer of 2 to 4). The rubber composition exhibits hysteresis loss increased selectively at a high temperature region.Type: GrantFiled: September 28, 2000Date of Patent: September 3, 2002Assignee: Bridgestone CorporationInventors: Hiroshi Yamada, Tatsuhiko Ihara
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Patent number: 6426376Abstract: A graphitic material having an accessible surface of at least 50 m2 per gram, wherein 0.1-40% by weight, based on the weight of the material, of at least one alkali metal is taken up between the graphite layers.Type: GrantFiled: June 27, 2000Date of Patent: July 30, 2002Assignees: Universiteit Utrecht, U-Cat B.V.Inventor: John Wilhem Geus
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Patent number: 6414052Abstract: Polymeric particles of a desired particle size improved with the dispersion state of a pigment contained in the high polymeric particles can be obtained by a production method, which includes solution-polymerizing monomers having polymerizable unsaturated bonds in the presence of ionic particles sulfonic group or carboxyl group on the surface thereof.Type: GrantFiled: November 28, 2000Date of Patent: July 2, 2002Assignee: Fuji Xerox Co., Ltd.Inventors: Akinori Komura, Ryojiro Akashi, Takashi Uematsu, Jun Kawahara, Masahiro Moriyama
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Patent number: 6407149Abstract: A method of molding an evenly colored, thermally conductive composition. Thermally conductive filler material is colored and mixed with a base polymer matrix. The mixture is molded into the desired shape. The step of for coloring the filler material is tailored to the type of thermally conductive filler used and could include, as required, anodizing, spraying or dying of the material before mixing with the base polymer matrix and prior to molding.Type: GrantFiled: November 29, 2000Date of Patent: June 18, 2002Assignee: Cool Options, Inc.Inventor: Kevin A. McCullough
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Patent number: 6407155Abstract: Intercalated layered materials prepared by reacting the layered material with a coupling agent and co-intercalating an onium ion and an oligomer or polymer between the planar layers of a swellable layered material, such as a phyllosilicate, preferably a smectite clay. The spacing of adjacent layers of the layered materials is expanded at least about 3 Å, preferably at least about 5 Å, usually preferably to a d-spacing of about 15-20 Å, e.g., 18 Å with the onium ion spacing/compatibilizing agent. The intercalation of the oligomer or polymer then increases the spacing of adjacent layers an additional at least 3 Å, e.g., to at least about 20 Å, preferably about 25 Å to about 30 Å, generally about 28 Å, and provides a nanocomposite having increased tensile strength, flexibility, and ductility (less brittle).Type: GrantFiled: March 1, 2000Date of Patent: June 18, 2002Assignee: Amcol International CorporationInventors: Guoqiang Qian, Tie Lan, Aaron M. Fay, Anthony S. Tomlin
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Patent number: 6376577Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.Type: GrantFiled: December 18, 2000Date of Patent: April 23, 2002Assignee: Merck PatentgesellschaftInventors: Helge Kniess, Dieter Heinz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
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Patent number: 6372349Abstract: The present invention relates to a high-resistivity carbon black coated with a resin on the surface and having a volume resistivity of not less than 100 &OHgr;·cm.Type: GrantFiled: August 23, 2000Date of Patent: April 16, 2002Assignees: Mitsubishi Chemical Corporation, Mikuni Color Ltd.Inventors: Hideyuki Hisashi, Satoru Arata, Yuuichi Sekine
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Patent number: 6372820Abstract: Various modified particles are described which can be used in polymerizations to attach one or more polymers onto modified particles. Also described are the resulting modified particles having attached monomer or polymer groups as well as methods of preparing such modified particles. The polymer groups on the modified particles can be terminated and these various modified particles with attached groups can be used in a variety of end uses.Type: GrantFiled: May 4, 2000Date of Patent: April 16, 2002Assignee: Cabot CorporationInventor: Wayne Devonport
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Patent number: 6350519Abstract: A modified particle or aggregate is disclosed wherein a particle has an attached group having the formula: wherein the substituents are defined in the disclosure. Modified particles with attached polymers are also disclosed as well as methods of making the modified products.Type: GrantFiled: June 2, 1999Date of Patent: February 26, 2002Assignee: Cabot CorporationInventor: Wayne Devonport
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Publication number: 20020016142Abstract: The invention concerns a coating for a smoothing and/or polishing element, particularly a flexible grinding wheel, provided with a flexible abrasive insert, for smoothing and polishing stone material, comprising an epoxidic, comprising an epoxidic resin with poli-sulphuric polymers in a percentage between 34 and 52%, a product to make the mixture thixotropic, in percentage between 12 and 19%, primary amines, in percentage between 9 and 18%, and synthetic diamond, treated by a polyvinyl-formal primer.Type: ApplicationFiled: August 1, 2001Publication date: February 7, 2002Inventor: Lupi Quintilio
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Publication number: 20020006984Abstract: A variety of methods to prepare a polymer composition containing at least one polymer and at least one modified pigment are described. The methods, in part, involve introducing a slurry containing at least one modified pigment into an emulsion or solution polymer prior to dewatering. Other polymer systems can be used including aqueous based polymerizations and solvent-based polymerizations, which can include free radical polymerizations. Other methods involve the formation of a modified pigment in the presence of an emulsion or solution polymer and then recovering the polymer composition containing the modified pigment. Compositions containing at least one modified pigment and the emulsion or solution polymer are also described as well as uses for the polymer compositions of the present invention.Type: ApplicationFiled: January 24, 2001Publication date: January 17, 2002Inventors: Khaled Mahmud, James A. Belmont, Yakov E. Kutsovsky, Wayne Devonport, Meng-Jiao Wang, Collin P. Galloway, Gregory J. Mehos
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Patent number: 6337358Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: wherein A represents an aromatic group or an alkyl 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: October 29, 1998Date of Patent: January 8, 2002Assignee: Cabot CorporationInventors: Robert S. Whitehouse, Wayne Devonport, Russell L. Warley, Thimma Rawalpally, Hairuo Tu
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Patent number: 6323296Abstract: A reinforced polyolefin article is provided which includes a sized reinforcement material incorporated in the article. The article may be prepared by polymerizing a cyclic olefin monomer in the presence of the sizing agent and a metathesis polymerization catalyst which includes ruthenium or osmium.Type: GrantFiled: February 28, 2000Date of Patent: November 27, 2001Inventors: Mark Warner, Steven D. Drake, Michael A. Giardello
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Patent number: 6306949Abstract: The invention relates to the preparation of a rubber composition containing silica-based filler reinforcement through the utilization of a organosilane disulfide compound mixed with a rubber composition in at least one preparatory, non-productive, mixing stage followed by utilization of an organosilane polysulfide compound mixed with the rubber composition in a subsequent, productive, mixing stage. The invention further relates to the resulting rubber composition and use thereof in tires.Type: GrantFiled: October 22, 1998Date of Patent: October 23, 2001Assignee: The Goodyear Tire & Rubber CompanyInventors: Thierry Florent Edmé Materne, Giorgio Agostini, Ghislain Adolphe Léon Thise
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Patent number: 6300406Abstract: A resin composition containing 100 parts by weight of a thermoplastic fluorine-containing resin, 1-40 parts by weight of polymer-grafted carbon black, 1-15 parts by weight of a thermoplastic polyether resin, and 0-2 parts by weight of an electrolyte. An endless seamless belt having the above composition is suited as an intermediate image transfer element for an electrophotographic image forming apparatus.Type: GrantFiled: December 30, 1998Date of Patent: October 9, 2001Assignee: Okura Industrial Co., Ltd.Inventors: Shigetoshi Takechi, Kazuki Okunaka, Hideyuki Akaki, Kunio Kanaoka, Yoshihiro Tange
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Publication number: 20010025065Abstract: A long-life encoder switch which can enable flexible production in which a wide variety of products are manufactured in low volume is provided by using a conductive resin composition which has both excellent conductivity and abrasion resistance as a material for a contact part. The contact part of the encoder switch is produced by making a pattern of the conductive resin composition by screen printing and the conductive particles of the conductive resin composition contain a conductive powder of carbon beads with silver-coated surfaces and a silver powder.Type: ApplicationFiled: February 22, 2001Publication date: September 27, 2001Applicant: Alps Electric Co., Ltd.Inventor: Satoru Matsumora
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Publication number: 20010021731Abstract: The present invention relates to laser-markable plastics which comprise, as dopant, graphite particles having one or more coatings.Type: ApplicationFiled: December 18, 2000Publication date: September 13, 2001Inventors: Helge Kniess, Dieter Heniz, Reiner Delp, Gerhard Pfaff, Matthias Kuntz
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Patent number: 6277901Abstract: The invention relates to an additive compositions for rubbers and rubber mixtures which contain at least one solid, powdery substance and at least one dispersant, the at least one additive substance being coated with the at least one dispersant. The compositions are present as granulate and are prepared by means of a multi-stage fluidized-bed process. The invention also relates to the use of the additive compositions in the preparation of rubber and products obtained using them.Type: GrantFiled: June 26, 1998Date of Patent: August 21, 2001Assignee: Schill & Seilacher GmbH & Co.Inventor: Manfred Hensel
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Patent number: 6268407Abstract: A composition comprising a filler material, a chemical compound and a polymer. A preferred filler material comprises carbon black and preferred polymers include ethylene-containing polymers such as ethylene-propylene copolymer or ethylene-propylene terpolymers. The present invention also includes articles of manufacture incorporating the polymer compositions.Type: GrantFiled: April 9, 1999Date of Patent: July 31, 2001Assignee: Cabot CorporationInventors: Robert S. Whitehouse, Michel Longuet, Theo Al, Michael Smith
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Patent number: 6267148Abstract: A conductive polyamide resin composition containing 6-15 parts of conductive carbon black and 0.3-5 parts of secondary aromatic amines for 100 parts by weight of polyamide resins is excellent in formability and a tube manufactured using the composition is excellent in conductivity, heat-aging resistance and oxygenated-gasoline resistance as well.Type: GrantFiled: December 14, 1998Date of Patent: July 31, 2001Assignee: Tokai Rubber Industries, Ltd.Inventors: Kazutaka Katayama, Hiroaki Itoh, Koyo Murakami
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Patent number: 6258864Abstract: Polymer foam compositions comprise polymer foam and chemically modified carbonaceous filler, specifically, carbonaceous filler having polymer moieties chemically bonded to the carbonaceous particulates. Exemplary carbonaceous fillers include carbon black, activated carbon, graphite, carbon fibers, fibrils and the like. The polymer moieties have a valence orbital bond to the carbonaceous particulate, such as an ionic or covalent bond. The chemical bond survives shear forces and the like, such as would be encountered by filler material in a reaction injection molding process for the manufacture of filled polyurethane foam insulation panels.Type: GrantFiled: May 24, 1999Date of Patent: July 10, 2001Assignee: Cabot CorporationInventors: Dennis M. Dalton, David A. Kinsman, Lynn M. Krajkowski, Adam L. MacKay
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Patent number: 6248808Abstract: Carbon black having silica attached to the surface, characterized in that the attached silica has a size of from 0.1 to 20 nm in thickness and from 1 to 40 nm in width.Type: GrantFiled: October 14, 1998Date of Patent: June 19, 2001Assignee: Mitsubishi Chemical CorporationInventors: Kazuhiro Sone, Masami Ishida, Kiyoshi Mizushima
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Patent number: 6245860Abstract: A rubber composition which contains substantially hollow, irregularly-shaped particles, and/or fragments thereof derived from a surface-modified carbon black aggregate from the which the carbon black core has been removed. For example, an irregularly-shaped carbon black aggregate may be surface-modified to have interconnecting domains of at least one inorganic material on its surface and the carbon black core removed by an oxidation process leaving an irregularly-shaped, substantially hollow particle and/or fragments thereof of said inorganic materials. An article having a component of such rubber composition is also provided such as, for example, a tire or an industrial product.Type: GrantFiled: June 16, 1999Date of Patent: June 12, 2001Assignee: The Goodyear Tire & Rubber CompanyInventors: Thierry Florent Edmé Materne, Christian Kaes, Giorgio Agostini, Uwe Ernst Frank, Friedrich Visel