Mixing With Carbon, E.g., Graphite, Etc., Having Numerical Limitations, Other Than Amount, E.g., Included Herein Are Particle Size, Surface Area, Etc., Or Composition Or Product Thereof, Dnrm Patents (Class 524/495)
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Publication number: 20130012644Abstract: A carbon fiber composite material (50) includes an elastomer, and carbon nanofibers dispersed in the elastomer in an amount of 0.01 to 0.70 parts by mass based on 100 parts by mass of the elastomer, the carbon nanofibers having an average diameter of 0.4 to 7.0 nm. A method of producing a carbon fiber composite material includes mixing carbon nanofibers having an average diameter of 0.4 to 7.0 nm into an elastomer in an amount of 0.01 to 0.70 parts by mass based on 100 parts by mass of the elastomer, and tight-milling the mixture at 0 to 50° C. using an open roll at a roll distance of 0.5 mm or less to obtain a carbon fiber composite material (50).Type: ApplicationFiled: June 15, 2012Publication date: January 10, 2013Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION, SHINSHU UNIVERSITY, NISSIN KOGYO CO., LTD.Inventors: Ken'ichi Niihara, Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Masaei Ito
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Patent number: 8349942Abstract: Described herein is an intermediate transfer member that includes a layer of phenoxy resin having dispersed therein graphene particles.Type: GrantFiled: May 10, 2011Date of Patent: January 8, 2013Assignee: Xerox CorporationInventors: Michael S. Roetker, Francisco J. Lopez, Kyle B. Tallman, Jonathan H. Herko, David W. Martin, Scott J. Griffin, Mandakini Kanungo, Yuhua Tong
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Patent number: 8349932Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH—??(I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)nNH—??(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.25 to 20 weight percent of one or more polyhydroxy polymer(s) having a number average molecular weight of at least 2000 and selected from the group consisting of ethylene/vinyl alcohol copolymer and poly(vinyl alcohol). Also disclosed are molded or extruded articles including the polyamide composition.Type: GrantFiled: January 28, 2011Date of Patent: January 8, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Shailesh Ratilal Doshi, Annakutty Mathew, Marvin M. Martens
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Patent number: 8349918Abstract: An organic siloxane composite material containing polyaniline/carbon black and a preparation method thereof are disclosed. The organic siloxane composite material containing polyaniline/carbon black consists of a plurality of polyaniline/carbon black composites distributed in organic siloxane precursor while the organic siloxane composite material containing polyaniline/carbon black includes from 10 to 30 weight percent of polyaniline/carbon black composites. The preparation method of organic siloxane composite material containing polyaniline/carbon black includes the steps of: distributing a plurality of polyaniline/carbon black composites in organic siloxane precursor to produce a first solution; and adding a cross-linking agent into the first solution, after reaction with each other, an organic siloxane composite material containing polyaniline/carbon black is produced.Type: GrantFiled: January 21, 2009Date of Patent: January 8, 2013Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Cheng-Chien Yang, Kuo-Hui Wu, Wang Tsae Gu, Yuen-Hsin Peng
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Patent number: 8349956Abstract: The present invention relates to a tire having a tread comprising a rubber composition that comprises at least: as a first diene elastomer, between 5 and 25 phr of a styrene-nitrile-butadiene terpolymer (SNBR) having a nitrile monomer content between 4 and 18% by weight; a second diene elastomer other than SNBR; a reinforcing filler; a liquid plasticizer, the glass transition temperature of which is below ?20° C. The invention makes it possible to improve the properties of rolling resistance and of grip on wet ground of tire treads.Type: GrantFiled: June 30, 2009Date of Patent: January 8, 2013Assignees: Compagnie Generale des Establissements Michelin, Michelin Recherche et Technique S.A.Inventors: Garance Lopitaux, Didier Vasseur
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Patent number: 8337800Abstract: A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.Type: GrantFiled: October 17, 2011Date of Patent: December 25, 2012Assignee: Kaneka CorporationInventors: Yasushi Nishikawa, Mutsuaki Murakami, Kiyokazu Akahori
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Patent number: 8338525Abstract: A water-base adhesive mix for producing tires, having, by weight, 5 to 80% water, 10 to 60% of a cross-linkable unsaturated-chain polymer base, 0.2 to 1% sulphur, 0.1 to 3% zinc oxide, 0.1 to 1% of accelerating agents, 0.1 to 15% of emulsifiers, and 0.01 to 30% of a carbon black having —ArAy type functional surface groups, where: Ar is an aromatic radical from the group including phenyl, naphthyl, anthracenyl, phenanthrenyl, biphenyl and pyridinyl; A is a COO? or SO3? functional group; y is a whole number from 1 to 5 when Ar is phenyl, from 1 to 7 when Ar is naphthyl, from 1 to 9 when Ar is anthracenyl, phenanthrenyl or biphenyl, and from 1 to 4 when Ar is pyridinyl.Type: GrantFiled: October 29, 2008Date of Patent: December 25, 2012Assignee: Bridgestone CorporationInventor: Carlo Silvestri
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Patent number: 8338519Abstract: A PTFE resin composition, which comprises PTFE resin, and metal carbide powder having a Vickers hardness of 1,200 HV, or more, and which preferably further contains an inorganic filler other than the metal carbide powder, for example, carbon fibers, glass fibers, etc., has an improved abrasion resistance, when molded into resin seal rings, etc., by reducing a self-abrasion amount of the resin against hard mating metals having a rough surface (Rz of about 6.3 to about 9.0 according to JIS B0601-1994), and by polishing the mating material roughness rapidly.Type: GrantFiled: October 12, 2006Date of Patent: December 25, 2012Assignee: NOK CorporationInventors: Kazuhiro Yamamoto, Shinya Nakaoka, Takaaki Yasudomi
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Patent number: 8334333Abstract: The rubber composites for tire treads include silica; carbon black; and oil constituents, wherein a ratio (A index) of silica contents, carbon black contents, and oil constituents contents is represented by A index=silica contents/(carbon black contents+silica contents+oil constituents contents)?0.8; and a ratio (B index) of a complex elastic modulus E* at 30° C. and a loss tangent tan ? at 60° C. is represented by B index=E*/tan ??120.Type: GrantFiled: December 22, 2009Date of Patent: December 18, 2012Assignee: Honda Motor Co., Ltd.Inventors: Takeshi Hotaka, Tetsuya Mizone, Emiko Mogi, Shinya Notomi
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Publication number: 20120309887Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: ApplicationFiled: August 3, 2012Publication date: December 6, 2012Applicant: NISSIN KOGYO CO., LTD.Inventors: Toru NOGUCHI, Hiroyuki UEKI, Shigeki INUKAI, Kenji TAKEUCHI, Satoshi IINOU
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Patent number: 8324304Abstract: Polyimide resin compositions that contain an aromatic polyimide, graphite and a sepiolite filler, or a mixture of a sepiolite filler and a kaolin filler, are found to exhibit low wear and high thermal oxidative stability. Such compositions are especially useful in molded articles that are exposed to wear conditions at high temperatures such as aircraft engine parts.Type: GrantFiled: July 30, 2008Date of Patent: December 4, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Robert Ray Burch, Timothy D. Krizan, Jesus G. Moralez
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Patent number: 8318355Abstract: A composite of particles comprising a high crystallinity carbon and a low crystallinity carbon, wherein the low crystallinity carbon exhibits an average lattice constant d=(002) of 0.350 nm or more and a crystallite size L=(002) in the diffraction of C axis of 25 nm or less, as characterized by wide-angle X ray diffraction measurements, the high crystallinity carbon exhibits an average lattice constant d=(002) of 0.338 nm or less and a crystallinity size L=(002) in the diffraction of C axis of 40 nm or more, as characterized by wide-angle X-ray diffraction measurements, the high crystallinity carbon having at least 50% of its external surface embedded within or surrounded by a matrix of low crystallinity carbon.Type: GrantFiled: December 6, 2002Date of Patent: November 27, 2012Assignee: Hydro-QuebecInventors: Hossein Maleki, Robert J. Selman, Abdelbast Guerfi, Elisabeth Dupuis, Karim Zaghib
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Patent number: 8314204Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: GrantFiled: October 25, 2011Date of Patent: November 20, 2012Assignees: Gunze Limited, Ube Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 8312905Abstract: The invention is directed to a pneumatic tire having a tread comprising a vulcanizable rubber composition comprising, expressed as parts by weight per 100 parts by weight of elastomer (phr), (A) 30 to 70 phr of a first styrene-butadiene rubber, (B) 20 to 60 phr of a second styrene-butadiene rubber, (C) 5 to 20 phr of cis-1,4 polybutadiene having a Tg of from ?110° C. to ?90° C.; (D) 30 to 60 phr of processing oil; (E) 5 to 20 phr of carbon black having an Iodine absorption ranging from 130 to 210 g/kg according to ASTM D-1510 and an oil absorption ranging from 110 to 140 cc/100 g according to ASTM D-2414; (F) 80 to 130 phr of silica; (G) 0.5 to 20 phr of a sulfur containing organosilicon compound; and (H) 5 to 20 phr of resin.Type: GrantFiled: September 24, 2010Date of Patent: November 20, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Pascal Patrick Steiner, Marc Weydert, Christian Jean-Marie Kaes
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Patent number: 8309645Abstract: A composite material includes a polyimide matrix material and an exfoliated graphite material dispersed within the polyimide matrix material. The composite material exhibits a Thermal Stability Index of at least about 20 and has a particle distribution in which 90% of the particles have a particle size not greater than 500 micrometers.Type: GrantFiled: October 4, 2007Date of Patent: November 13, 2012Assignee: Saint-Gobain Performance Plastics CorporationInventors: Gwo S. Swei, Ilya L. Rushkin, Pawel Czubarow, David Worth House, David DeCoster, Olivier Guiselin
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Patent number: 8309644Abstract: A method of treating carbon fibers includes introducing a functional group to a carbon fiber surface, and reacting the functional group with a silane to incorporate a silanol moiety to the carbon fiber surface. The functional group is chosen from amine groups, carboxyl groups, hydroxyl groups, and/or carbonyl groups. Also disclosed herein are a fiber-reinforced resin and a method of making the same.Type: GrantFiled: August 29, 2011Date of Patent: November 13, 2012Assignee: GM Global Technology Operations LLCInventor: Xiaosong Huang
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Patent number: 8303852Abstract: A carbon black-dispersed polyamic acid solution composition that utilizes carbon black excelling in safety and environmental adaptability and excels in the dispersion stability and fluidity of carbon black dispersed in polyamic acid solution, and that realizes high solid content and high carbon black content. An intermediate transfer belt of polyimide, which produces a transfer image of high quality in a color image-forming apparatus, produced from the polyamic acid solution composition. In particular, a carbon black-dispersed polyamic acid solution composition containing a polyamic acid solution obtained by reaction of approximately equimolar amounts of biphenyltetracarboxylic acid dianhydride and an aromatic diamine, and containing a carbon black of 2 to 6% volatile content produced by oil furnace process, wherein the solid content of the solution composition is 23 wt. % or more and wherein the carbon black content of the solid is in the range of 20 to 30 wt. %.Type: GrantFiled: September 18, 2007Date of Patent: November 6, 2012Assignees: Gunze Limited, Ube Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Toru Murakami
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Patent number: 8303869Abstract: A method of producing a composite material which includes a carbon-based material and a particulate or fibrous metal material Z. The method includes steps (a) to (c). In the step (a), at least a first carbon material and the metal material Z mixed into an elastomer, and dispersing the first carbon material and the metal material Z by applying a shear force to obtain a composite elastomer, the metal material Z having a melting point lower than a melting point of the first carbon material. In the step (b), the composite elastomer is heat-treated to vaporize the elastomer to obtain an intermediate composite material including a second carbon material and the metal material Z. In the step (c), the intermediate composite material is heat-treated together with a substance including an element Y having a melting point lower than the melting point of the metal material Z to vaporize the substance including the element Y.Type: GrantFiled: August 6, 2010Date of Patent: November 6, 2012Assignee: Nissin Kogyo Co., Ltd.Inventors: Akira Magario, Toru Noguchi
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Patent number: 8304472Abstract: A method for producing a conductive polyamide-polyphenylene ether resin composition comprising (A) 10 to 90 parts by mass of a polyphenylene ether resin, (B) 5 to 85 parts by mass of a polyamide having a (terminal amino group)/(terminal carboxyl group) ratio falling within the range from 0.20 to 4.0, (C) 5 to 85 parts by mass of a polyamide having a (terminal amino group)/(terminal carboxyl group) ratio falling within the range from 0.05 to 0.19 and (D) 0.1 to 10 parts by mass of a conductive filler, the method comprising the step of melt-kneading of the component (A), the component (B), a compatibilizer (F) and a master batch (E) obtained by melt-kneading of the component (D) and the component (C) in advance.Type: GrantFiled: May 12, 2006Date of Patent: November 6, 2012Assignee: Asahi Kasei Chemicals CorporationInventor: Mutsumi Maeda
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Patent number: 8299165Abstract: The present invention is directed to pneumatic tire comprising at least one component, the at least one component comprising a rubber composition comprising: at least one diene-based rubber; and from 1 to 50 phr of a particulate polyamide having a particle size of from 0.1 to 1 micron, wherein the particulate polyamide is substantially spherical and wherein the particulate polyamide has a melting temperature greater than 210° C. as measured by ISO 11357.Type: GrantFiled: February 24, 2011Date of Patent: October 30, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Ralf Mruk, Giorgio Agostini, Annette Lechtenboehmer, Frank Schmitz, Claude Schweitzer, Georges Marcel Victor Thielen
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Patent number: 8299184Abstract: A rubber composition for tire sidewall which comprises a rubber component, which comprises polybutadiene rubber having a content of the cis-1,4-bond of 92% or greater and a content of the vinyl bond of 1.5% or smaller and natural rubber and/or at least one other diene-based synthetic rubber, and 10 to 70 parts by mass of carbon black having a specific surface area by nitrogen adsorption of 20 to 100 m2/g per 100 parts by mass of the rubber component and does not comprise a softener having an aniline point of 50° C. or lower and a tire using the rubber composition for sidewall. Excellent resistance to cut growth is obtained while sufficient workability is surely exhibited.Type: GrantFiled: February 14, 2007Date of Patent: October 30, 2012Assignee: Bridgestone CorporationInventors: Junko Kurazumi, Kouji Masaki
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Publication number: 20120267024Abstract: Provided are a rubber composition for a sidewall reinforcing layer and a run-flat tire that reduce heat build-up, enhance elongation at break at high temperature, and increase run-flat durability, while maintaining good rigidity. The composition contains a rubber component including tin-modified BR (a) and/or BR (b) modified by a compound of formula (1); and an alkylphenol-sulfur chloride condensate, wherein an amount of the alkylphenol-sulfur chloride condensate is 3-10 parts by mass per 100 parts by mass of the rubber component: wherein R1, R2, and R3 may be the same as or different from one another and each represent an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R4 and R5 may be the same as or different from each other and each represent a hydrogen atom or an alkyl group; and n denotes an integer.Type: ApplicationFiled: April 20, 2012Publication date: October 25, 2012Inventor: Yoji IMOTO
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Patent number: 8293831Abstract: Disclosed is a thermoplastic composition including at least one semi-aromatic polyamide having a glass transition equal to or greater than 100° C. and a melting point of equal to or greater than 280° C.; a thermally conducting filler having a thermal conductivity of at least 5 W/mK, for instance CaF2 powder; and at least one hyperbranched polyesteramide having terminal hydroxy groups; and molded articles made therefrom.Type: GrantFiled: October 21, 2009Date of Patent: October 23, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Yuji Saga, Wei W. Zhang
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Patent number: 8288454Abstract: Disclosed herein is a composition having a thermoset polymer and a plurality of hollow microsphere homogenously dispersed in the composition. The polymer is a cyanate ester thermoset, a phthalonitrile thermoset, a crosslinked acetylene thermoset, or a hydrosilation thermoset. Also disclosed herein is a method of: providing a thermosetting compound; adding microspheres to the thermosetting compound; and mixing the thermosetting compound while initiating crosslinking of the thermosetting compound.Type: GrantFiled: August 11, 2009Date of Patent: October 16, 2012Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Teddy M Keller, Matthew Laskoski, Manoj K. Kolel-Veetil
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Patent number: 8288456Abstract: The present invention relates to a process for the production of impact-modified filled polycarbonate compositions and molding compositions. A process of the present invention involves: (i) mixing the CNT (component C) with rubber-containing vinyl copolymer (component B) and/or rubber-free vinyl copolymer (component D) on a twin screw extruder, to obtain a CNT masterbatch, (ii) mixing the CNT masterbatch with polycarbonate (component A) and optionally with Component B and/or Component D and optionally with an additive on a twin screw extruder. A polycarbonate composition prepared according to the present invention does not experience degradation of the molecular weight of the polycarbonate during compounding a compared to processes known in the art.Type: GrantFiled: August 27, 2008Date of Patent: October 16, 2012Assignee: Bayer Materialscience AGInventors: Achim Feldermann, Andreas Seidel, Michael Bierdel, Reiner Rudolf
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Patent number: 8287950Abstract: The invention relates to a method for obtaining polyamide or copolyamide particles which are spheroidal and whose average diameter is between 40 and 150 ?m, preferably between 60 and 100 ?m. Said method consists of introducing a mineral charge, preferably silica, having an average diameter of 1-30 ?m into the reaction mixture. The invention also relates to a polyamide or copolyester amide powder and to the use thereof in order to manufacture coatings, ink compositions, paint compositions, cosmetic compositions, pharmaceutical compositions, alloys with metal powders or metal oxide powders and parts by agglomerating said powder by laser sintering, IR radiation or UV radiation.Type: GrantFiled: November 10, 2005Date of Patent: October 16, 2012Assignee: Arkema FranceInventors: Thierry Ouvrard, Thierry Senninger, Karine Loyen, Holger Senff
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Publication number: 20120259054Abstract: A cured fluoroelastomer sensor bushing comprises A) fluoroelastomer having at least 53 wt. % fluorine, and B) 10 to 50 parts by weight, per hundred parts by weight fluoroelastomer, of carbon black a nitrogen adsorption specific surface area of 70-150 m2/g and a dibutyl phthalate absorption of 90-180 ml/100 g.Type: ApplicationFiled: August 4, 2011Publication date: October 11, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: SHUICHI OKUTSU
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Patent number: 8283403Abstract: Carbon nanotubes (CNTs) are so long that they cannot be penetrated inbetween carbon fibers during a prepreg preparation process, and are shortened in order for them not to be filtered out by the carbon fibers. This results in a huge improvement of the mechanical properties (flexural strength and flexural modulus) compared with neat epoxy.Type: GrantFiled: July 25, 2008Date of Patent: October 9, 2012Assignee: Applied Nanotech Holdings, Inc.Inventors: Dongsheng Mao, Zvi Yaniv
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Patent number: 8283402Abstract: A seal element (70) for providing a static or dynamic seal between two components (74, 78) in a downhole tool includes a polymer host material (212) and a plurality of nanostructures (220) forming a nanocomposite material (210). The polymer host material (212) has a plurality of regions of free volume (222) that receive the nanostructures (220). The nanostructures (220) and the polymer host material (212) form interfacial interactions that improve the useful life of the seal element (70) by minimizing seal failures associated with explosive decompression, extrusion, spiral failure, abrasion, temperature degradation and the like.Type: GrantFiled: February 16, 2010Date of Patent: October 9, 2012Assignee: Halliburton Energy Services, Inc.Inventors: Jeremy Buc Slay, Thomas Wayne Ray
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Patent number: 8278385Abstract: The invention is to provide a rubber composite and tire using the rubber composite, which, when the rubber composite is used as the tread rubber of a tire, enables the tire to have high wear resistance and hence have a long life while presenting a low rolling resistance and enables an automobile that uses the tires to reduce fuel consumption during traveling. The rubber composite of the invention comprises 100 parts by weight of a rubber component composed of at least one kind of rubber, selected from a group of natural rubber, synthetic isoprene rubber and synthetic diene rubber and 10 to 100 parts by weight of a carbon black blended therein, the carbon black is specified to satisfy the relation X/Y?0.84, where X is the mercury intrusion specific surface area (m2/g), measured by mercury porosimetry and Y is the CTAB specific surface area (m2/g). The tire of the invention is one that uses the above rubber composite as its tread portion.Type: GrantFiled: July 22, 2008Date of Patent: October 2, 2012Assignee: Bridgestone CorporationInventor: Hidetada Fujisawa
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Publication number: 20120234452Abstract: The present invention aims to provide a rubber composition for a bead apex and a pneumatic tire which are capable of improving the handling stability, fuel economy and extrusion processability in a balanced manner. The present invention relates to a rubber composition for a bead apex, including: a rubber component; carbon black; an inorganic filler other than silica; and a phenolic resin, wherein the carbon black has a BET specific surface area of 25 to 50 m2/g; and an amount of the carbon black is 40 to 80 parts by mass, and an amount of the inorganic filler is 3 to 30 parts by mass, based on 100 parts by mass of the rubber component.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Inventor: TATSUYA MIYAZAKI
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Patent number: 8263698Abstract: A method of producing a carbon fiber composite material includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers having an oxidized surface. The second step includes mixing the second carbon nanofibers into an elastomer, and uniformly dispersing the carbon nanofibers in the elastomer by applying a shear force to obtain the carbon fiber composite material. The second carbon nanofibers obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm %.Type: GrantFiled: April 8, 2009Date of Patent: September 11, 2012Assignees: Nissin Kogyo Co., Ltd., Mefs Kabushiki KaishaInventors: Toru Noguchi, Hiroyuki Ueki, Shigeki Inukai, Kenji Takeuchi, Satoshi Iinou
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Patent number: 8258209Abstract: The present invention provides a resin composition comprising: (A) a thermoplastic resin, (B) a granular material which has a number average particle diameter of 0.5 to 5 mm and is obtainable by granulating a fiber mainly having alumina with a number average fiber diameter of 1 to 50 ?m, and (C) a filler composed of a material of which electric resistivity at 300 K is 102 ?m or less. The resin composition can be molded into a molded article with electric insulation. The electric resistivity of the molded article has sufficient electric insulation in applications such as in electric and electronic parts.Type: GrantFiled: August 28, 2008Date of Patent: September 4, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Shintaro Komatsu, Mitsuo Maeda, Hiroshi Harada
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Patent number: 8257786Abstract: A printing or coating composition has a non-volatile liquid vehicle carrying a conductive polymer to be deposited on a substrate and is cleavable by heat or acidification without decomposition of said material, cleavage of said vehicle producing decomposition products that are more volatile than said vehicle and which can be evaporated to dry the composition. Suitably, that vehicle is a carbonic acid diester or a malonic acid diester, e.g. of the formula: wherein R2 is an organic substituent such that R2—OH is a volatile alcohol; R1 is an aliphatic or aromatic substituent of more than three carbon atoms such that is volatile; and R3 is C1-3 alkyl.Type: GrantFiled: April 13, 2007Date of Patent: September 4, 2012Assignee: The Technical University of DenmarkInventors: Frederik Krebs, Mikkel Joergensen
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Patent number: 8258229Abstract: A method including first grinding, in aqueous media of natural calcium carbonate, an acrylic polymer having a molecular weight of between 8,000 g/mole and 15,000 g/mole and a molar content of less than 20% of polymeric chains of molecular weight less than 3,000 g/mole and second, optionally concentrating, leading to an aqueous suspension with an increased slope factor, which improves the opacity of the coated paper produced from such a suspension.Type: GrantFiled: June 16, 2009Date of Patent: September 4, 2012Assignee: Coatex S.A.S.Inventors: Jacques Mongoin, Christian Jacquemet, Jean-Marc Suau
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Patent number: 8258225Abstract: Disclosed is a coating formed from a composition containing a film-forming resin and a plurality of particles dispersed in the resin. The average particle size of the particles is 0.1 to 50 microns, and the particles have a hardness sufficient to impart greater mar and/or scratch resistance to the coating as compared to a coating where no particles are present. Also, the difference between the refractive ranges from 1 to 1.5. A method for preparing a powder coating including the particles also is provided.Type: GrantFiled: April 25, 2005Date of Patent: September 4, 2012Assignee: PPG Industries Ohio, IncInventors: Karen A. Barkac, Anthony M. Chasser, Roy E. Dean, Mildred Lisa Perrine, Deirdre D. Ragan, Karen S. Rechenberg, John R. Schneider
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Patent number: 8258207Abstract: Blends of carbon black or other fillers is described. The blends of carbon black or other fillers are preferably pre-blended prior to introducing the blend into a product such as an elastomeric or polymeric product.Type: GrantFiled: April 28, 2011Date of Patent: September 4, 2012Assignee: Cabot CorporationInventor: Gregory T. Gaudet
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Patent number: 8247487Abstract: This invention relates to a tire with a tread of a rubber composition containing carboxylated styrene/butadiene rubber.Type: GrantFiled: November 11, 2010Date of Patent: August 21, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert Anthony Bethea, Paul Harry Sandstrom
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Patent number: 8246862Abstract: The invention provides semi-conductive, static dissipative polymeric compositions comprising: an insulating polymeric resin; a first antistatic particulate material having a relatively low threshold percolation wt % concentration, wherein the first antistatic particulate material is present in the composition at from 50-150% of its threshold percolation wt % concentration; and a second antistatic particulate material having a relatively higher threshold percolation wt % concentration, wherein the second antistatic particulate material is present in the composition at from 1-110% of its threshold percolation wt % concentration. The invention enables forming semi-conductive, static dissipative polymeric compositions having volume resistivity easily controllable within the range of from about 104 ohm-cm to about 1011 ohm-cm. The invention further provides castable semi-conductive, static dissipative polymeric compositions wherein the insulating polymeric resin is formed from castable compositions.Type: GrantFiled: July 30, 2009Date of Patent: August 21, 2012Assignee: Eastman Kodak CompanyInventor: Michel F. Molaire
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Patent number: 8247486Abstract: Creep resistant fluoropolymer is made by blending a melt-fabricable fluoropolymer having a melt flow rate of no greater than about 7 g/10 min with milled carbon fiber and forming the resultant blend into an article, the carbon fiber content of the blend being from about 15 to 35 wt % based on the combined weight of the carbon fiber and the fluoropolymer.Type: GrantFiled: June 11, 2009Date of Patent: August 21, 2012Assignee: E.I. du Pont de Nemours and CompanyInventor: Jacob Lahijani
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Patent number: 8242194Abstract: The invention relates to preparation of a high silica reinforcement-containing rubber composition by a method which involves a delayed and divided inclusion of greater than 50 percent of fatty acid salt processing aid to a rubber composition in an internal rubber mixer following completion of addition of precipitated silica and silica coupling agent in a preceding rubber mixing step in an internal rubber mixer. The invention further relates to a resulting rubber composition and to tires having a component thereof such as, for example, a tire tread.Type: GrantFiled: October 5, 2009Date of Patent: August 14, 2012Assignee: The Goodyear Tire & Rubber CompanyInventor: Paul Harry Sandstrom
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Patent number: 8242190Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component, carbon black having a pH of less than 5.0 and an organic amine in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.Type: GrantFiled: August 29, 2007Date of Patent: August 14, 2012Assignee: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Patent number: 8242199Abstract: The invention relates to a rubber composition for a tire tread simultaneously establishing a high wear resistance and a low heat buildup, and more particularly to a rubber composition for a tire tread comprising 10-250 parts by weight of a carbon black per 100 parts by weight of a rubber component, in which said carbon black is produced in a carbon black production step satisfying the following relational equations (1) and (2): 2.00???9.00??(1) ?2.5x?+85.0???90.0??(2) when a residence time from the introduction of the starting hydrocarbon into the high-temperature combustion gas flow to the introduction of the quenching medium is t1 (sec), an average reaction temperature for such a time is T1 (° C.), a residence time from the introduction of the quenching medium to the enter of a reaction gas flow into the reaction stop zone is t2 (sec), an average reaction temperature for such a time is T2 (° C.), ?=t1×T1 and ?=t2×T2.Type: GrantFiled: February 15, 2005Date of Patent: August 14, 2012Assignee: Bridgestone CompanyInventor: Masaki Yanagioka
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Publication number: 20120202938Abstract: A cured fluoroelastomer part for use in oil and gas exploration and production comprises A) fluoroelastomer having at least 53 wt. % fluorine, and B) more than 20 parts by weight, per hundred parts by weight fluoroelastomer, of carbon black a nitrogen adsorption specific surface area of 70-150 m2/g and a dibutyl phthalate absorption of 90-180 ml/100 g.Type: ApplicationFiled: August 5, 2011Publication date: August 9, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Tsuyoshi Kawai, Makio Mori, Shuichi Okutsu, Kenji Terauchi
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Patent number: 8236269Abstract: Disclosed are rigid random coils, having a contour length larger than a diameter thereof, an average bending ratio Db of 0.1˜0.8, and a weight average molecular weight of 1×108˜9×108 g/mole, and a resin composition or organic solvent composition including the same. The rigid random coils have the properties intermediate between those of polymers and rigid rod particles, and thus may be used as filler of various resins, aqueous solutions or organic solvents.Type: GrantFiled: February 13, 2007Date of Patent: August 7, 2012Assignee: LG Chem, Ltd.Inventors: Heon-Sang Lee, Chang-Hun Yun, Heon-Mo Kim
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Patent number: 8231805Abstract: The present invention provides a liquid crystalline polyester composition comprising a liquid crystalline polyester, a fibrous filler, a plate-like filler and a granular filler. The connector obtained using the liquid crystalline polyester composition has poor filling suppressed and is excellent in warp resistance and crack resistance.Type: GrantFiled: November 12, 2010Date of Patent: July 31, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiyuki Fukuhara, Hiroyasu Yamauchi
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Publication number: 20120190784Abstract: Heterophasic polypropylene composition comprising (A) 45 to 70 wt % of a propylene homo- or copolymer matrix with an MFR2 in accordance with ISO 1133 (230° C., 2.16 kg load) of ?80 g/10 min and (B) 25 to 40 wt % of an elastomeric propylene-ethylene copolymer, having an intrinsic viscosity IV (ISO 1628, with decalin as solvent) of ? 3.3 dl/g and an ethylene content of 20 to 50 wt %, (C) 0-15 wt % of an elastomeric ethylene/alpha-olefin random copolymer (D) 3-25 parts per weight of inorganic filler, the heterophasic polypropylene compositions having a total MFR2 (230° C./2.16 kg) in accordance with ISO 1133 of ?5 g/10 min, a Charpy notched impact strength according to ISO 179/1eA at +23° C. of ?15.0 kJ/m2, preferably ?25.0 kJ/m2, a minimum value for the Charpy notched impact strength according to ISO 179/1eA at ?200 C of ?7.0 kJ/m2, preferably ?10.0 kJ/m2 and a tensile modulus according to ISO 527-3 of ?1200 MPa; their preparation and use for producing injection moulded articles being free of flow marks.Type: ApplicationFiled: June 15, 2010Publication date: July 26, 2012Applicant: Borealis AGInventors: Werner Posch, Michael Tranninger, Pauli Leskinen, Bo Malm, Sybille Simon, Norbert Reichelt
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Patent number: 8226851Abstract: The present invention comprises a liquid-crystalline polymer composition comprising a nanostructured hollow-carbon material and a liquid-crystalline polymer. The nanostructured hollow-carbon material may comprises particles, each particle of which is selected from the group consisting of a particle which is composed of a carbon part and a hollow part and has a structure that the hollow part is entirely enclosed by the carbon part; and a particle which is composed of a carbon part and a hollow part and has a structure that the hollow part is partly enclosed by the carbon part.Type: GrantFiled: May 27, 2009Date of Patent: July 24, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroshi Harada, Hirokazu Matsui
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Publication number: 20120184658Abstract: The present invention aims to provide a bead apex rubber composition and a pneumatic tire which are capable of improving the handling stability, fuel economy and proccessability in a balanced manner, and preventing deterioration of the handling stability. The bead apex rubber composition includes: a rubber component; a carbon black; and a phenolic resin, wherein the carbon black has a COAN of 95 to 130 ml/100 g and a BET specific surface area of 25 to 50 m2/g.Type: ApplicationFiled: January 13, 2012Publication date: July 19, 2012Inventor: Tatsuya MIYAZAKI
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Patent number: 8222325Abstract: Thermoplastically processable PVC mixtures having enhanced stability are prepared by incorporating at least one stabilizer containing metal ions and a modified polyvinyl alcohol co-stabilizer.Type: GrantFiled: July 18, 2008Date of Patent: July 17, 2012Assignees: Kuraray Europe GmbH, Kuraray Co., Ltd.Inventors: Samuel Michel, Robert W. Fuss, Masaki Kato, Masato Nakamae, Akira Tsuboi