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)
-
Publication number: 20140268535Abstract: A portable computing device includes a processor, a memory, and a portable computing device case that encloses one or more integrated circuits, including at least the processor and the memory. The case includes a molded fiber-reinforced polymer (FRP) material that includes a polymer material and elongated fibers that adhere to the polymer material and that have a property that varies over a length of the fibers along an elongation axis of the fibers, wherein an adhesion strength between the fibers and the polymer is determined at least in part by a property of the fibers that varies over a length of the fibers along the elongation axis.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: Google Inc.Inventors: William Hamburgen, Felix Jose Alvarez Rivera
-
Patent number: 8835545Abstract: A rubber composition for use in tire treads including 100 parts by mass of a diene rubber and from 70 to 100 parts by mass of silica, wherein the diene rubber includes from 50 to 90 mass % of a terminal-modified styrene-butadiene rubber having a hydroxy group on an end of the molecule, and from 10 to 25 mass % of a butadiene rubber; the silica has a BET specific surface area of from 45 to 550 m2/g, a CTAB specific surface area of from 40 to 525 m2/g, a particle size distribution width Ld((d84?d16)/d50) of at least 0.91, and wherein V(d5-d50)/V(5-d100) is at least 0.66; and a durometer hardness of the rubber composition when measured at 20° C. is from 70 to 80.Type: GrantFiled: August 6, 2010Date of Patent: September 16, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventors: Masaki Sato, Takeshi Kiyohara
-
Patent number: 8829103Abstract: A composite material includes: carbon fibers having an average fiber length of more than about 10 mm and about 100 mm or less; and a thermoplastic resin. The carbon fibers are substantially two-dimensionally-randomly oriented. The composite material includes a carbon fiber bundle (A) in a ratio of more than 0 volume % and less than about 30 volume % to a total volume of the carbon fibers, the carbon fiber bundle (A) including the carbon fibers of a critical single fiber number defined by formula (1) or more. An average number (N) of the carbon fibers in the carbon fiber bundle (A) satisfies formula (2). Critical single fiber number=600/D??(1) 1.0×104/D2<N<2.5×104/D2??(2) D is an average fiber diameter (?m) of the carbon fibers.Type: GrantFiled: September 14, 2012Date of Patent: September 9, 2014Assignee: Teijin LimitedInventors: Yuhei Konagai, Yutaka Kondo, Naoaki Sonoda
-
Patent number: 8829102Abstract: A masterbatch for pressure pipe applications is disclosed. The masterbatch includes carbon black in a concentration that is in excess of 40 weight percent (wt %) of the masterbatch, and a high-density polyethylene (HDPE) carrier resin in a concentration that is in the range of 40 to 60 wt % of the masterbatch and has a melt flow index above 100 g/10 min at 2.16 kg/190° C. and a weight average molecular weight (Mw) that is less than 100000. The masterbatch may further include one or more additives (e.g., lubricant and/or an anti-oxidant). In some embodiments, microdispersion of carbon black in the masterbatch is rated less than 3 (according to ISO 18553). In one specific case, 98% or more of observed carbon black agglomerates are less than 30 microns. The masterbatch may be included, for example, in a pressure pipe compound where it is diluted with a base polymer.Type: GrantFiled: October 27, 2010Date of Patent: September 9, 2014Assignee: Cabot CorporationInventors: Santiague Pierre, Alain Thielen, Davide Cammarata
-
Patent number: 8828476Abstract: Disclosed is a polyimide nanocomposite, which is prepared by mixing modified graphene oxide, polyamic acid, and a solvent to obtain a mixture solution, and heat-curing the mixture solution.Type: GrantFiled: September 6, 2012Date of Patent: September 9, 2014Assignee: Pusan National University Industry-University Cooperation FoundationInventors: Chang-Sik Ha, Myeon-Cheon Choi, Gwang-Yeon Kim
-
Patent number: 8809441Abstract: A rubber composition having a reinforcing filler of activated carbon having a pore volume of 0.15 cc/g or more, a weight average particle size of less than 140 microns, and a differential characteristic curve of pore volume versus adsorption potential by the GAED or equivalent method having a peak value at less than 5 cal/cc. The rubber composition may have activated carbon as the primary reinforcing filler at a loading of from 25 to 250 phr. Also described is a method including the steps of selecting a charcoal material, grinding the charcoal material, activating the charcoal material, and mixing the activated carbon into a rubber composition as the primary reinforcing filler.Type: GrantFiled: August 3, 2010Date of Patent: August 19, 2014Assignee: The Gates CorporationInventors: James H. Sealey, Douglas R. Sedlacek
-
Patent number: 8809440Abstract: There is provided a method of producing a conjugated diene rubber capable of being used as a starting material for a crosslinked rubber that can be used in applications such as tire treads and can raise the fuel efficiency.Type: GrantFiled: October 21, 2010Date of Patent: August 19, 2014Assignee: JSR CorporationInventors: Ryouji Tanaka, Masahiro Shibata, Takahiro Nakamura, Kenji Hasegawa, Toshihiro Tadaki
-
Patent number: 8802751Abstract: The invention relates to impact-modified polymer compositions, containing a polymer blend of polycarbonate with polyester and/or polyamide, plus an impact modifier blend of core/shell and functional polyolefin impact modifiers. The impact modifiers can provide the polymer blend composition with improved impact strength at equivalent loading, and also allow for higher amounts of polyester and/or polyamide in the blend without sacrificing impact strength.Type: GrantFiled: June 9, 2010Date of Patent: August 12, 2014Assignee: Arkema Inc.Inventors: Jason M. Lyons, Stephane Girois
-
Patent number: 8802766Abstract: An intermediate transfer member including a first supporting substrate layer, and a second layer of a silane-containing polyamideimide, and a filler component.Type: GrantFiled: December 10, 2010Date of Patent: August 12, 2014Assignee: Xerox CorporationInventors: Yuhua Tong, Dante M. Pietrantoni, Jin Wu
-
Patent number: 8798508Abstract: A high-quality developing member which excels in filming resistance and excels in leak resistance despite high electroconductivity is provided. The developing member includes an electroconductive substrate, an elastic layer formed on the substrate, and a surface layer which covers a surface of the elastic layer. The surface layer includes a first resin which has, between two adjacent urethane linkages, a structure represented by the structural formula (1) and one or both of structures selected from the group consisting of a structure represented by the structural formula (2) and a structure represented by the structural formula (3), a second resin which has a structure represented by the structural formula (4) and one or both of structures selected from the group consisting of a structure represented by the structural formula (5) and a structure represented by the structural formula (6), and an electronically conductive filler.Type: GrantFiled: November 8, 2013Date of Patent: August 5, 2014Assignee: Canon Kabushiki KaishaInventors: Masaki Yamada, Takashi Koyanagi, Kunimasa Kawamura, Minoru Nakamura, Yuji Sakurai, Shohei Urushihara
-
Patent number: 8791177Abstract: An elastomer composite with silica-containing filler is described, along with methods to make the same. The advantages achieved with the elastomer composite and methods are further described.Type: GrantFiled: September 14, 2011Date of Patent: July 29, 2014Assignee: Cabot CorporationInventors: Michael D. Morris, Anand Prakash, Frederick H. Rumpf
-
Patent number: 8784683Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester having different structural units and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length (Mw) of 200 to 500 ?m, and content of specific glass fiber having fiber length of not less than 1500 ?m is 0.1 to 5.0 percent by weight to a total amount of the glass fiber.Type: GrantFiled: December 14, 2011Date of Patent: July 22, 2014Assignee: Toray Industries, Inc.Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
-
Patent number: 8785538Abstract: Disclosed herein are an electromagnetic wave shielding thermoplastic resin composition and a plastic article including the same. The electromagnetic wave shielding thermoplastic resin composition comprises about 100 parts by weight of a thermoplastic resin comprising a polycarbonate resin, a polyester resin, or a combination thereof, about 1 to about 30 parts by weight of stainless steel fiber, and about 0.01 to about 10 parts by weight of carbon nanotubes.Type: GrantFiled: June 22, 2009Date of Patent: July 22, 2014Assignee: Cheil Industries Inc.Inventors: Sang Wan Kim, Young Sil Lee
-
Patent number: 8785541Abstract: The present invention can provide a rubber composition, in which all of strength at break, low heat-build up property, run-flat durability and low fuel consumption can be improved since the rubber composition comprises 5 to 120 parts by weight of flake-like graphite having an average aspect ratio of 3 to 80 and an average particle diameter of 2 to 80 ?m on the basis of 100 parts by weight of a diene rubber component, and a run-flat tire using the rubber composition.Type: GrantFiled: March 27, 2007Date of Patent: July 22, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Kazuo Hochi
-
Patent number: 8785544Abstract: A primer composition is provided that includes a reactant having an alkoxysilyl group, the reactant being obtained by reacting a polyisocyanate (I), an isocyanate group, and an alkoxysilane having a reactable functional group; a polyisocyanate (II); a polyurethane compound; a (meth) acrylic resin; and a solvent. In the primer composition, a molecular weight of the (meth) acrylic resin is from 15,000 to 150,000 and a weight ratio [(meth) acrylic resin/polyurethane compound] of the (meth) acrylic resin to the polyurethane compound is from 90/10 to 10/90. Additionally, a laminate is provided that includes an inorganic material and a primer layer obtained from the primer composition.Type: GrantFiled: August 30, 2011Date of Patent: July 22, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventor: Akihiro Miyata
-
Patent number: 8785542Abstract: The present invention relates to a rubber composition including (A) at least one rubber component selected from the group consisting of a synthetic rubber and a natural rubber; (B) a polymer of farnesene having a weight-average molecular weight of not less than 2,000 and less than 25,000; and (C) carbon black.Type: GrantFiled: September 21, 2012Date of Patent: July 22, 2014Assignees: Kuraray Co., Ltd., Amyris, Inc.Inventors: Shigenao Kuwahara, Kei Hirata, Daisuke Koda
-
Patent number: 8778222Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length of 30 to 100 ?m, and content of specific glass fiber having fiber length of 300 to 500 ?m is 0.1 to 5 percent by weight to a total amount of the glass fiber.Type: GrantFiled: December 14, 2011Date of Patent: July 15, 2014Assignee: Toray Industries, Inc.Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
-
Patent number: 8772374Abstract: The invention relates to the preparation of a rubber composition containing a pre-treated precipitated silica and a tire having a component comprised of such rubber composition. The pre-treated silica is a precipitated silica having been pre-treated with a silica coupling agent comprised of an alkoxyorganomercaptosilane to form a precipitated silica/coupling agent composite prior to its blending with a rubber composition. The rubber composition preparation involves reacting said pretreated silica/coupling agent composite with a combination of bis(3-triethoxysilylpropyl) polysulfides in situ within the rubber composition.Type: GrantFiled: October 22, 2012Date of Patent: July 8, 2014Assignee: The Goodyear Tire & Rubber CompanyInventors: Giorgio Agostini, Marc Weydert, Elena Sperotto
-
Patent number: 8754161Abstract: The present invention provides a complex-shaped fluororubber formed product having excellent demoldability in molding. The complex-shaped fluororubber formed product of the present invention comprises a cross-linked fluororubber layer obtainable by cross-linking a fluororubber composition containing a fluororubber (A) and a carbon black (B). The cross-linked fluororubber layer has a loss modulus E? of 400 kPa or higher and 6,000 kPa or lower determined by a dynamic viscoelasticity test (measurement temperature: 160° C., tensile strain: 1%, initial force: 157 cN, frequency: 10 Hz).Type: GrantFiled: August 25, 2011Date of Patent: June 17, 2014Assignee: Daikin Industries, Ltd.Inventors: Junpei Terada, Daisuke Ota, Masanori Kitaichi, Yutaka Ueta, Shigeru Morita, Kazuyoshi Kawasaki, Tatsuya Morikawa, Shoji Fukuoka
-
Patent number: 8748338Abstract: A toxin immobilization particle and method of fabrication is provided that includes a polysulfide-rubber polymer coated activated carbon particle that provides enhanced toxin adsorption. A porous activated carbon particle have a size range up to 2 mm is used. The polysulfide-rubber polymer coated activated carbon particle includes a polymer-dose range of up to 1.64 grams of sulfur per gram of activated carbon particles, where the toxins can include mercury, PCBs, chlorinated pesticides or polycyclic aromatic hydrocarbons. The method of forming the toxin immobilization particle includes condensing a polymer in a sulfide mixture to form a polysulfide-rubber polymer compound and coating an activated carbon particle with the polysulfide-rubber polymer. The levels of sulfur loading in the toxin immobilization particles are controlled by the polymer dose during the coating process, where the polysulfide polymer coated activated carbon particle provides enhanced toxin adsorption.Type: GrantFiled: October 21, 2011Date of Patent: June 10, 2014Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Richard G. Luthy, Eun Ah Kim
-
Publication number: 20140154454Abstract: The heat resistant seal member according to one aspect of the present disclosure contains, for 100 parts by weight of a ternary fluoroelastomer, 5 to 15 parts by weight of first carbon nanofibers, 10 to 15 parts by weight of second carbon nanofibers, and 0 to 20 parts by weight of carbon black. The total amount of the first carbon nanofibers and the second carbon nanofibers are 15 to 30 parts by weight, and the total amount of the first carbon nanofibers, the second nanofibers, and the carbon black is 20 to 45 parts by weight. The heat resistant seal member can achieve a compression set of not more than 40% after 70 hours and 25% compressibility in a hydrogen sulfide gas atmosphere at 200° C.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicants: Shinshu University, Schlumberger Technology CorporationInventors: Hiroyuki Ueki, Toru Noguchi, Masaei Ito
-
Patent number: 8742001Abstract: The invention relates to a nanocomposite material that contains a polymer binder, a filler and a fraction of nanoparticles, characterized in that the fraction of nanoparticles comprises multi-layered carbon particles having a toroid-like shape with a size of 15 to 150 nm, wherein the ratio between the outer diameter and the thickness of the toroid body is in a range of (10-3):1. This nano-modification makes it possible to obtain an efficient compaction and hardening of the nanocomposite material close to the filler/binder inter-phase barrier, and accordingly to increase the average density, elasticity, hardness and resistance of the material. The invention can be used for making various parts and articles for use in mechanical engineering and transport, including instrument holders for the precise surface treatment of parts.Type: GrantFiled: October 22, 2009Date of Patent: June 3, 2014Assignee: Virtum i Sverige ABInventors: Andrey Nikolaevich Ponomarev, Olga Meza
-
Patent number: 8741987Abstract: A polymer masterbatch in latex form having nanomaterials and a compatibilized silica for incorporation into natural and synthetic polymers in latex form using precipitated or fumed silica with at least two organosilicon coupling compounds attached to the silica in an aqueous suspension.Type: GrantFiled: August 24, 2012Date of Patent: June 3, 2014Assignee: Lion Copolymer Holdings, LLCInventors: Lawrence Douglas Harris, Mark Arigo, Subir Debnath, Jorge Soto
-
Patent number: 8732977Abstract: A method of producing a structural component comprising manufacturing a structural component from a moisture absorbable material the toughness of which increases with increasing moisture absorption and subsequently subjecting the structural component to at least one of elevated temperature and humidity for a period of time such that the structural component attains a predetermined moisture content and distribution.Type: GrantFiled: July 12, 2007Date of Patent: May 27, 2014Assignee: Airbus Operations LimitedInventors: Richard Adams, Peter Griggs, Glenn Watson
-
Patent number: 8735488Abstract: The invention relates to black having a CTAB surface area of 100 to 160 m?/g, a quartile ratio of more than 1.60, and an FP index of >0. Said black is produced in a furnace reactor. Sixty to 90 percent by weight of the raw black material are injected into the reactor in the first third of the reaction zone, while the remaining amount of the raw black material is injected into the reactor upstream at least in one other point. In addition, the combustible is conducted such that 90 to 100 percent by weight of the combustible are evaporated when first hitting the raw black material and 80 to 99 percent by weight of the combustible are evaporated 5 ms before hitting the raw black material. Said blacks can be used in rubber mixtures.Type: GrantFiled: September 4, 2008Date of Patent: May 27, 2014Assignee: Orion Engineered Carbons GbmHInventors: Thomas Pelster, Burkhard Freund, Joachim Fröhlich, Werner Niedermeier, Conny Vogler
-
Patent number: 8729155Abstract: A flexible or rigid intumescent material for fire protection applications. The intumescent material includes inorganic fibers, intumescent material, and a char strength enhancer that is different from the intumescent material and binder. The intumescent material exhibits a high expansion ratio and char strength, without substantial shrinkage, in response to elevated temperatures normally encountered during a fire.Type: GrantFiled: November 16, 2010Date of Patent: May 20, 2014Assignee: Unifrax I LLCInventors: Michele Wierzbicki, Joseph A. Fernando, Kevin D. Packard, Kenneth B. Miller
-
Patent number: 8729164Abstract: The present invention relates to thermoplastic molding compositions and moldings with improved wear resistance comprising at least one thermoplastic matrix M, at least one carbon reinforcing fiber F, at least one carbon component K; at least one silicate component S, where the at least one silicate component S comprises particles which have, in any particle dimension, a length/thickness ratio greater than or equal to 3, and at least one titanium dioxide T.Type: GrantFiled: October 10, 2012Date of Patent: May 20, 2014Assignee: BASF SEInventors: Florian Hennenberger, Mark Völkel, Rüdiger Bluhm, Christian Maletzko, Andreas Gebhard, Stefan Sutor
-
Patent number: 8728359Abstract: Fire retardant materials are provided that contain carbon nanotubes and particles capable of endothermically reacting when exposed to elevated temperatures. The carbon nanotubes may be a buckypaper. Methods also are provided for making a fire retardant material and for improving the fire retardation capabilities of a material.Type: GrantFiled: December 16, 2013Date of Patent: May 20, 2014Assignee: Florida State University Research Foundation, Inc.Inventors: Changchun Zeng, Chuck Zhang, Ben Wang, Richard Liang, Chase Knight
-
Patent number: 8720513Abstract: A tire having a decorative side wall feature, the decorative side wall feature being based upon a rubber composition, the rubber composition comprising between 15 and 25 parts by weight per 100 parts by weight of rubber (phr) of a highly unsaturated diene elastomer, between 60 and 80 phr of a butyl rubber and between 5 and 15 phr of an EPDM elastomer characterized as having an ethylene content of between 65 wt. % and 75 wt. % as measured by ASTM D 3900-95, not including diene, and a Mooney viscosity ML(I+4) at 125° C. of between 60 and 80. The light-colored rubber composition may further include between 5 and 25 phr of a paraffinic processing oil and a non-black filler.Type: GrantFiled: June 16, 2008Date of Patent: May 13, 2014Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventor: Rosa M. Pruitt
-
Patent number: 8722777Abstract: A highly loaded concentrate pellet composition includes an active ingredient in a concentration of at least about 60% by weight, and a low molecular weight binder in a concentration of up to about 35% by weight. The active ingredient is substantially evenly dispersed in the binder. The binder has a melting point that permits the composition to melt under shear in an extruder. The binder is non-metallocene and non-stearic.Type: GrantFiled: October 7, 2011Date of Patent: May 13, 2014Assignee: Thermocolor LLCInventor: Glen Alan Hirschfeld
-
Patent number: 8710116Abstract: This invention pertains to an ink for inkjet printing, in particular to an aqueous ink comprising a self-dispersing pigment colorant and certain soluble polymers which enhance print quality without compromising jetting performance.Type: GrantFiled: August 8, 2007Date of Patent: April 29, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Jose Esteban Valentini, Dean M. Fake, Christian Jackson
-
Patent number: 8710136Abstract: 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: August 12, 2011Date of Patent: April 29, 2014Assignee: Cabot CorporationInventors: Irina S. Yurovskaya, William L. Sifleet, Steven J. List, Martin C. Green, Anand Prakash
-
Patent number: 8710144Abstract: The invention describes powders for use in the production of spatial structures, i.e. molded bodies, using layer build-up methods, as well as methods for their efficient production. The powders have the special feature that they have good flow behavior, for one thing, and at the same time, have such a composition that the molded body that can be produced with the powder, using rapid prototyping, has significantly improved mechanical and/or thermal properties. According to a particularly advantageous embodiment, the powder has a first component that is present in the form of essentially spherical powder particles, which is formed by a matrix material, and at least one further component in the form of stiffening and/or reinforcing fibers, which are preferably embedded in the matrix material.Type: GrantFiled: October 31, 2007Date of Patent: April 29, 2014Assignee: EOS GmbH Electro Optical SystemsInventors: Peter Hesse, Tillmann Paul, Richard Weiss
-
Patent number: 8697782Abstract: Cross-linked rubber obtained from a rubber composition, which comprises 100 parts by weight of EPDM, 5-120 parts by weight carbon black, 70-150 parts by weight of fine bituminous powder, and 0.2-8 parts by weight of an organic peroxide, has distinguished heat resistance and sealability, and can suppress blister generation due to pressure changes when used in contact with carbon dioxide, and is specifically distinguished foaming-resistance characteristics due to abrupt pressure reduction of carbon dioxide, which are the necessary characteristics of seal material for carbon dioxide refrigerant, and also distinguished compression set characteristics, which determine the product life at elevated temperatures, and thus is suitable for use as carbon dioxide seal materials, such as O rings, packings, gaskets, oil seals, valves, etc.Type: GrantFiled: June 11, 2008Date of Patent: April 15, 2014Assignee: NOK CorporationInventor: Takeshi Sato
-
Patent number: 8697778Abstract: The present invention relates to a black matrix formed by applying a curable coating composition onto a substrate to form a curable coating, curing the curable coating imagewise to form a coating, and developing and drying the coating. The curable coating composition comprises a vehicle, a curable resin, and at least one modified pigment comprising a pigment having attached at least one organic group having the formula -X-I or -X-NI, wherein X, which is directly attached to the pigment, represents an arylene or heteroarylene group, an alkylene group, an aralkylene group, or an alkarylene group, I represents a non-polymeric group comprising at least one ionic group or at least one ionizable group, and NI represents a non-polymeric group comprising at least one nonionic group. The curable coating composition, curable coating, and cured coating are also described. Also disclosed is a method of controlling the resistivity of a coating.Type: GrantFiled: September 20, 2010Date of Patent: April 15, 2014Assignee: Cabot CorporationInventors: Eugene N. Step, Agathagelos Kyrlidis
-
Publication number: 20140094555Abstract: A carbon-fiber-reinforced plastic prepared by impregnating a matrix resin into a sheet-like base material includes discontinuous carbon fibers, wherein a content ratio of carbon fibers having lengths of 10 mm or longer in the base material is 60 wt % or more relative to a total amount of the carbon fibers, and an average value of orientation degrees of carbon fibers contained in the base material is 2-10.Type: ApplicationFiled: April 18, 2012Publication date: April 3, 2014Applicant: Toray Industries, Inc.Inventors: Takafumi Hashimoto, Hirohito Minowa, Takashi Shimada, Masahiro Hashimoto, Katsuhiro Miyoshi, Yoshihiro Naruse
-
Patent number: 8686106Abstract: The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 3,3?,4,4?-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4?-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight % or more.Type: GrantFiled: December 4, 2008Date of Patent: April 1, 2014Assignees: Gunze Limited, UBE Industries, Ltd.Inventors: Naoki Nishiura, Akira Ichino, Takashi Kuraoka, Toru Murakami, Takeshige Nakayama
-
Patent number: 8686086Abstract: A process for the preparation of a rubber composition for the manufacture of tires is presented. The composition is based on one or more diene elastomers, one or more reinforcing fillers, and a crosslinking system. The composition includes particles of one or more thermoplastic materials chosen from amorphous thermoplastic materials and semicrystalline thermoplastic materials, with the glass transition temperature of the amorphous thermoplastic material or materials and the melting point of the semicrystalline thermoplastic material or materials varying from 80° C. to 300° C. The particles exhibit a volume-average diameter of less than or equal to 200 ?m.Type: GrantFiled: May 24, 2011Date of Patent: April 1, 2014Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Vincent Abad, Emmanuel Custodero, Damien Thomasson
-
Publication number: 20140080960Abstract: A composite material includes: carbon fibers having an average fiber length of more than about 10 mm and about 100 mm or less; and a thermoplastic resin. The carbon fibers are substantially two-dimensionally-randomly oriented. The composite material includes a carbon fiber bundle (A) in a ratio of more than 0 volume % and less than about 30 volume % to a total volume of the carbon fibers, the carbon fiber bundle (A) including the carbon fibers of a critical single fiber number defined by formula (1) or more. An average number (N) of the carbon fibers in the carbon fiber bundle (A) satisfies formula (2). Critical single fiber number=600/D??(1) 1.0×104/D2<N<2.5×104/D2??(2) D is an average fiber diameter (?m) of the carbon fibers.Type: ApplicationFiled: September 14, 2012Publication date: March 20, 2014Applicant: TEIJIN LIMITEDInventors: Yuhei KONAGAI, Yutaka KONDO, Naoaki SONODA
-
Publication number: 20140080961Abstract: A composite material includes: carbon fibers having an average fiber length of more than about 10 mm and about 100 mm or less; and a thermoplastic resin. The carbon fibers are substantially two-dimensionally-randomly oriented. The composite material includes a carbon fiber bundle (A) in a ratio of about 30 volume % or more and less than about 90 volume % to a total volume of the carbon fibers, the carbon fiber bundle (A) including the carbon fibers of a critical single fiber number defined by formula (1) or more. An average number (N) of the carbon fibers in the carbon fiber bundle (A) satisfies formula (2). Critical single fiber number=600/D??(1) 6×104/D2<N<2×105/D2??(2) D is an average fiber diameter (?m) of the carbon fibers.Type: ApplicationFiled: September 14, 2012Publication date: March 20, 2014Applicant: TEIJIN LIMITEDInventors: Yuhei Konagai, Yutaka Kondo, Naoaki Sonoda
-
Patent number: 8664305Abstract: The invention relates to functionalized lignin, rubber compositions which contain functionalized lignin and to products which have at least one component comprised of such rubber composition.Type: GrantFiled: January 8, 2010Date of Patent: March 4, 2014Assignee: The Goodyear Tire & Rubber CompanyInventors: David Andrew Benko, Bruce Raymond Hahn, Martin Paul Cohen, Shawn Matthew Dirk, Kirsten Nicole Cicotte
-
Patent number: 8658730Abstract: The invention aims to provide a rubber composition for a tire which achieves a balanced improvement in the abrasion resistance under both low and high severity abrasion conditions, low heat build-up properties, and chipping resistance. The invention relates to a rubber composition for a tire, including: a rubber component containing 60% by mass or more of a natural rubber component; and a carbon black having a cetyltrimethylammonium bromide (CTAB) specific surface area of 140-160 m2/g, a ratio (CTAB/IA) of the cetyltrimethylammonium bromide specific surface area to an iodine adsorption number (IA) of 0.85-1 m2/g, and a ratio (?D50/Dst) of a half width (?D50) of Stokes' diameter distribution of aggregates to a Stokes' diameter (Dst) of aggregates, as determined by a centrifugal sedimentation method, of 0.9-0.99, the natural rubber component containing 20% by mass or more of highly purified natural rubber per 100% by mass of the natural rubber component.Type: GrantFiled: February 25, 2013Date of Patent: February 25, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Naoya Ichikawa
-
Patent number: 8658731Abstract: An object of the present invention is to provide a resin composition in which a surface resistivity and a volume resistivity actually measured in an antistatic region and an electrostatic diffusion region are equivalent to each other, and a remolded product produced by reutilizing a molded product which can hold the above properties. Specifically, disclosed is a resin composition comprising: 100 parts by weight of (a) a thermoplastic resin; 20 to 80 parts by weight of (b) a nonconductive fibrous inorganic filler having an average fiber diameter of not more than 15 ?m; and 10 to 70 parts by weight of the total of (c1) a graphite and (c2) a graphite in which (c) graphite having an average particle diameter of 1 ?m to 50 ?m wherein each kind thereof has a different particle diameter; and at least one of differences in average particle diameter between two kinds thereof is not less than 5 ?m.Type: GrantFiled: May 16, 2013Date of Patent: February 25, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshikuni Akiyama, Minoru Sakata, Yukihiro Ban
-
Patent number: 8658729Abstract: Topping rubber composition for canvas chafer which provides good rim chafing resistance, durability, sheeting processability, and less heat build-up. Topping rubber composition contains a rubber component with: (a) BR containing 2.5-20% by mass of 1,2-syndiotactic polybutadiene crystals, (b) BR having a cis content of 90% by mass or more, and/or (c) tin-modified BR obtained by polymerization with a lithium initiator and having a tin-atom content of 50-3000 ppm, a vinyl-bond content of 5-50% by mass, and a molecular weight distribution of 2 or less. Topping rubber composition also contains carbon black having N2SA of 65-130 m2/g. Total amount of (a)-(c) is 40-90% by mass per 100% by mass of the rubber component; amount of the carbon black is 50-75 parts by mass per 100 parts by mass of the rubber component. Also, pneumatic tire made with the composition.Type: GrantFiled: August 25, 2011Date of Patent: February 25, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Tatsuya Miyazaki
-
Patent number: 8658728Abstract: The present invention relates to a natural rubber that contains 200 ppm or less of phosphorus.Type: GrantFiled: December 14, 2009Date of Patent: February 25, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Naoya Ichikawa, Toshiaki Sakaki, Sumiko Miyazaki, Tomohiro Hosokawa, Ai Matsuura
-
Patent number: 8653177Abstract: The invention relates to a semiconductive resin composition containing at least two kinds of conductive fillers, wherein the difference in threshold values of percolation between at least two kinds of the conductive fillers is within a range of 10 to 50 mass %. The semiconductive resin composition of the present invention can be used widely in various form of molded products, such as component used for transport in a clean room, spin chuck, IC test socket, various rollers installed in copier, seamless belt, bearing, antistatic fiber, member for electrostatic coating, fuel tube, part around fuel or chemical tube.Type: GrantFiled: October 26, 2007Date of Patent: February 18, 2014Assignee: Showa Denko K.K.Inventors: Yuji Nagao, Ryuji Yamamoto
-
Patent number: 8648142Abstract: A poly(arylene sulfide) resin composition including 100 parts by weight of a substantially linear straight-chain poly(arylene sulfide) resin, 1 to 50 parts by weight of a branched poly(arylene sulfide) resin having a melt viscosity of 11.0×104 to 27.0×104 Pa·s as measured at a temperature of 330° C. and a shear rate of 2 sec?1, an average particle diameter of 50 to 2,000 ?m and a melt viscoelasticity tan ? of 0.10 to 0.30 as measured at a temperature of 310° C. and an angular velocity of 1 rad/sec, and 1 to 400 parts by weight of an inorganic filler, and a production process thereof.Type: GrantFiled: December 15, 2005Date of Patent: February 11, 2014Assignees: Polyplastics Co., Ltd., Kureha CorporationInventors: Hidemi Kondo, Koichi Suzuki, Hiroyuki Sato
-
Publication number: 20140039114Abstract: There is provided a fiber-reinforced composite material is constituted by reinforcing fibers with an average fiber length of 5 mm to 100 mm and a thermoplastic resin, in which in a viscoelastic characteristic that is defined by following formulas (1) and (2), an average value in a range of ?25° C. of the melting point of a matrix resin to +25° C. of the melting point of a matrix resin satisfies following formula (3): tan ?=G?/G???(1) tan ??=Vf×tan ?/(100?Vf)??(2) 0.01?tan ???0.2??(3) wherein G? represents a storage modulus (Pa) of the fiber-reinforced composite material, G? represents a loss modulus (Pa) of the fiber-reinforced composite material, and Vf represents a volume fraction (%) of the reinforcing fibers in the fiber-reinforced composite material.Type: ApplicationFiled: October 14, 2013Publication date: February 6, 2014Applicant: TEIJIN LIMITEDInventors: Katsuyuki Hagihara, Yuhei Konagai, Naoaki Sonoda, Masatomo Teshima
-
Publication number: 20140031482Abstract: A rubber composition for use in tire side walls contains from 30 to 40 parts by mass of carbon black having a nitrogen specific surface area of from 20 to 35 m2/g and a DBP oil absorption of from 50 to 95 cm3/100 g per 100 parts by mass of a rubber component constituted by from 30 to 70 mass % of a butadiene rubber having a cis-1,4 bond content of at least 97%, a Mooney viscosity (ML1+4) at 100° C. of at least 45, and a ratio (T?cp)/(ML1+4) of the viscosity [cps] of a 5 mass % toluene solution at 25° C. (T?cp) to the Mooney viscosity of at least 2.0, and from 30 to 70 mass % of another diene-based rubber.Type: ApplicationFiled: April 18, 2012Publication date: January 30, 2014Inventor: Tomoyuki Wada
-
Publication number: 20140024764Abstract: A process is provided for manufacturing articles though injection moulding of thermoplastic material and fibres. The fibres include glass fibres and are present in the moulded article in a quantity of 25% to 50%, by mass. More than 70% of the fibres have a length exceeding 5 mm in the moulded article. The thermoplastic material has a Notched Izod Impact Strength, after being combined with said fibres, greater than 250 J/m at 23 degrees Celsius.Type: ApplicationFiled: September 8, 2011Publication date: January 23, 2014Inventor: Ansie Du Toit