Containing At Least Two Organic Materials, E.g., Binder Plus Other Organic Material, Etc. Patents (Class 523/156)
  • Patent number: 10927241
    Abstract: The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 30 phf of at least one silane A having general empirical formula A-I) (R1)oSi—R2—(S—R3)q—S—X; and??A-I) 0.5 to 30 phf of at least one silane B having general empirical formula B-I) (R1)oSi—R2—(S—R3)u—S—R2—Si(R1)o??B-I) wherein q is 1, 2 or 3; and u is 1, 2 or 3; and X is a hydrogen atom or a —C(?O)—R8 group wherein R8 is selected from hydrogen C1-C20-alkyl groups, preferably C1-C17, C6-C20-aryl groups, preferably phenyl, C2-C20-alkenyl groups and C7-C20-aralkyl groups.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 23, 2021
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Julia Schoeffel, Norbert Mueller, Carla Recker, Christine Weber, Gesa Tarantola, David-Raphael Dauer, Fabian Schax, Nils Hojdis
  • Patent number: 10850564
    Abstract: An object is to provide a winter tire being excellent in performance on ice and performance for inhibiting clogging with snow and accretion of snow. The present invention relates to a winter tire having a tread composed of a rubber composition comprising 2.5 to 30 parts by mass of a cyclopentadiene-based resin and 5 to 100 parts by mass of silica based on 100 parts by mass of a rubber component comprising a natural rubber.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: December 1, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Mikako Takenaka
  • Patent number: 10808782
    Abstract: A friction material includes a base, a deposit including a friction modifier, and a resin disposed throughout the friction material. The base includes aramid fibers present in an amount of from greater than 50 weight percent to 70 weight percent, based on a total weight of the base. The base also includes a filler present in an amount from 30 weight percent to less than 50 weight percent, based on a total weight of the base. The friction material is also free of a material having a thermal degradation temperature of less than 200° C. The friction material may have a porosity of from 60% to 85% as determined using ASTM D4404-10 and a median pore size of from 0.5 ?m to 50 ?m, as determined using ASTM D4404-10.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 20, 2020
    Assignee: BorgWarner Inc.
    Inventors: Feng Dong, Robert Lam, Deanna Higgins
  • Patent number: 10710407
    Abstract: The present invention provides: a rubber composition for tires which has excellent processability and has excellent low heat build-up when formed into a tire; and a pneumatic tire using the same. The rubber composition for tires of the present invention is a rubber composition for tires, the rubber composition containing a diene rubber (A) and a microparticle (B), a vinyl group content of the diene rubber (A) being from 5 to 35 mass %, the microparticle (B) being a mercapto group-containing organic microparticle in which a crosslinkable oligomer or polymer (b1) is crosslinked, an average particle size of the microparticle (B) being from 1 to 200 ?m, and a content of the microparticle (B) being from 1 to 55 parts by mass per 100 parts by mass of the diene rubber (A).
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 14, 2020
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Satoshi Mihara, Kazushi Kimura, Hirokazu Kageyama
  • Patent number: 10576785
    Abstract: Tire treads, especially tire treads for aircraft or for heavy vehicles, formed from a material that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber, between 40 phr and 100 phr of a polyisoprene rubber, between 0 and 60 phr of a highly unsaturated diene rubber and between 1 phr and 25 phr of a polyterpene resin having a glass transition temperature of between 50° C. and 120° C. The rubber composition further includes between 0.1 phr and 10 phr of a poly-thiosulfate anti-reversion agent having the formula: MO3S—S—X—S—SO3M wherein X is an alkylene radical or a radical comprising two or more alkylene units, pairs of which units being linked through an oxygen or a sulfur atom, through a group —SO2—, —NH—, —NH2+—, —N(C1-16alkyl)- or —COO—, or through an arylene or cycloalkylene radical and M is a metal.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 3, 2020
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventor: Xiaofeng Shaw Yang
  • Patent number: 10562985
    Abstract: A modified diene elastomer is provided. The elastomer comprises: at least 70% by weight, with respect to the total weight of the modified diene elastomer, of a linear diene elastomer functionalized predominantly in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolysed to give silanol, the alkoxysilane group optionally bearing another functional group capable of interacting with a reinforcing filler, the alkoxysilane group bonded to the two branches of the diene elastomer via the silicon atom, the functionalized diene elastomer exhibiting a polydispersity index before fractionalization of less than or equal to 1.6; and more than 0 and up to 30% by weight, with respect to the total weight of the modified diene elastomer, of a star-branched diene elastomer exhibiting a polydispersity index before star-branching of less than or equal to 1.6, the Mooney viscosity of the modified diene elastomer varying from 30 to 80.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: February 18, 2020
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Marie-Hélène Dessendier, Charlotte Dire, Margarita Dorato, Jean Marc Marechal, Florent Vaultier
  • Patent number: 10538599
    Abstract: The present invention relates to a modified polymer having a high modification ratio and an excellent affinity with a filler, a method of preparing the same, a rubber composition including the modified polymer, and a molded article prepared from the rubber composition. The modified polymer according to the present invention may exhibit a high modification ratio by including functional groups in a polymer main chain and on at least one end thereof, and thus, an affinity with a filler, such as silica, may be excellent. Also, the rubber composition according to the present invention may have excellent processability by including the modified polymer having an excellent affinity with the filler, and, as a result, a processed product (e.g., tire) prepared by using the rubber composition may have excellent tensile strength, abrasion resistance, and wet road surface resistance.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Min Soo Kim, Seung Ho Choi, Dae June Joe, Won Mun Choi
  • Patent number: 10538600
    Abstract: A rubber composition including guayule rubber and 15 to 90 phr silica. The rubber can be cis-1,4 polyisoprene and include 15 to 90 phr silica and contain less than 20% of the proteins associated with Hevea rubber and further include at least a trace of resins present in other natural rubbers. The rubber can be cis-1,4 polyisoprene and further include between at least a trace and 3% by weight of resins present in guayule rubber. The rubber composition can further be comprised of a synthetic rubber and include between about 40-100 phr of guayule rubber, and silica. The silica can be hydrophobated.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: January 21, 2020
    Assignee: COOPER TIRE AND RUBBER COMPANY
    Inventor: Howard A. Colvin
  • Patent number: 10533083
    Abstract: An object of the present invention is to provide a rubber composition which is excellent in wet grip performance and abrasion resistance without deteriorating fuel efficiency, and a tire having a tread composed of the rubber composition. The present invention relates to a rubber composition comprising a rubber component comprising 20 to 90% by mass of a rubber component A and 10 to 80% by mass of a rubber component B, wherein an SP value of the rubber component A is not less than 17.8 (J/cm3)1/2 and an SP value of the rubber component B is lower than the SP value of the rubber component A by not less than 0.6 (J/cm3)1/2, and a tire having a tread composed of the rubber composition.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 14, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yuhei Yamashiro
  • Patent number: 10519299
    Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler including at least carbon black, having a specific surface area CTAB greater than or equal to 130 m2/g, a plasticizing hydrocarbon resin, the vitreous transition temperature of which, Tg, is greater than 20° C., and the softening point of which is less than 170° C., and a cross linking system, the dispersion of the filler in the elastomeric matrix having a Z score greater than or equal to 70.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: December 31, 2019
    Assignees: COMPAGNIE GENERALE DES ETABLESSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Marc Sevignon, Cecile Belin
  • Patent number: 10421854
    Abstract: A preparation method of a rubber composition for a tire assures that good processability can be obtained even if a silane coupling agent having a mercapto group is blended. The preparation method of a rubber composition for a tire is characterized by initiating kneading of a rubber component and a specific polysulfide compound before kneading the rubber component and a silane coupling agent having a mercapto group.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: September 24, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Tatsuhiro Tanaka, Takayuki Nagase, Keiji Ikeda
  • Patent number: 10407564
    Abstract: Provided herein are cured rubber compositions containing guayule natural rubber with 2.5-4 weight % resin and fillers. By the use of a specified cure package that contains increased amounts of sulfur and accelerator, the cured rubber compositions are found to exhibit strain induced crystallization (as can be observed by X-ray diffraction). Also provided are related methods for preparing the rubber compositions.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: September 10, 2019
    Assignee: Bridgestone Corporation
    Inventors: Sheel P. Agarwal, Yingyi Huang
  • Patent number: 10214638
    Abstract: The disclosure relates to a rubber composition based on at least one styrene/butadiene copolymer SBR, the SBR having a content of greater than or equal to 50 parts per hundred parts of elastomer, phr, a reinforcing filler comprising predominantly carbon black with a CTAB specific surface area of greater than or equal to 90 m2/g, wherein the composition comprises an aromatic dicyclopentadiene plasticizing resin comprising essentially styrene, ethylene and dicyclopentadiene units, at a content ranging from 2 to 40 phr, the composition containing less than 5 phr of another plasticizer.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: February 26, 2019
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche Et Technique, S.A.
    Inventors: Cecile Belin, Olivier Goncalves
  • Patent number: 10072131
    Abstract: The present invention provides a rubber composition a tire, by which both low rolling resistance and wet grip performance can be achieved at high levels. This rubber composition for a tire is obtained by blending from 66 to 180 parts by weight of a silica having a nitrogen adsorption specific surface area of from 150 to 400 m2/g into 100 parts by weight of a diene rubber; a size Rss of aggregates of the silica forming a hierarchical structure being from 14 to 23 nm when the rubber composition is measured by ultra-small-angle X-ray scattering and an obtained scattering profile is applied to a Unified-Guinier function.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 11, 2018
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Masaki Sato, Satoshi Mihara
  • Patent number: 10059833
    Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler including at least carbon black, having a specific surface area CTAB greater than or equal to 130 m2/g, a plasticizing hydrocarbon resin, the vitreous transition temperature of which, Tg, is greater than 20° C. and the softening point of which is less than 170° C., and a cross linking system, the dispersion of the filler in the elastomeric matrix having a Z score greater than or equal to 70.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: August 28, 2018
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Marc Sevignon, Cecile Belin
  • Patent number: 9969865
    Abstract: A rubber composition for tires comprises a diene rubber, silica, and a silane coupling agent, and is characterized in that a function v of a shear modulus G? of the rubber composition at 0.28% shear stress at 110° C., a CTAB specific surface area (CTAB) of the silica, a volume fraction (?) of the silica in the rubber composition, and a stress at 100% elongation (M100) of the rubber composition satisfies the relationship of the following equation (i): G?=K×v, where K is a coefficient greater than 0 and not greater than 450, and v is represented by the following equation (ii): v=?×(1+0.0258×CTAB×M100) and is a real number not less than 2.5 and not greater than 20.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 15, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Satoshi Mihara
  • Patent number: 9938398
    Abstract: The invention relates to vulcanizable rubber compositions comprising at least the following components: a) at least one functionalized polymer, b) at least one modified polybutadiene having a proportion of cis-1,4 units of >95% by weight and a proportion of 1,2-vinyl content of <1% by weight, the polybutadiene having been modified by means of sulphur chlorides after the polymerization, c) at least one silica, d) at least one further filler, e) at least one vulcanizing agent, f) at least one oil and g) optionally at least one further rubber additive.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: April 10, 2018
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: David John Hardy, Heike Kloppenburg, Alex Lucassen, Norbert Steinhauser, Yan Zhang
  • Patent number: 9915331
    Abstract: A friction material for a clutch pad comprising: a plurality of fibers; and, a filler material including at least 0.1% and at most 100% calcium silicate particles by weight based on total weight of the filler. A friction material for a clutch comprising: a plurality of fibers; a filler material including at least 0.1% and at most 40% calcium silicate particles by weight based on total weight of the friction material; the calcium silicate particles characterized by a specific surface area of at least 40 m2/g and an average particle size of at most 60 ?m; and, a binder. In an example aspect, the calcium silicate particles are characterized by a spherical morphology. In another example aspect, the calcium silicate particles are characterized by a specific surface area of about 105 m2/g and an average particles size of about 10 ?m.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 13, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Rashid Farahati, Murat Bakan, Babak LotfizadehDehkordi
  • Patent number: 9688846
    Abstract: Disclosed is a rubber composition for tire treads and a tire manufactured using the same. The rubber composition for tire treads includes 50 to 200 parts by weight of a wet masterbatch, 60 to 70 parts by weight of a raw rubber, and 50 to 200 parts by weight of a carbon black, the wet masterbatch being prepared by reacting 50 to 200 parts by weight of a carbon black, 20 to 100 parts by weight of a plant based resin and 50 to 200 parts by weight of a processing oil with respect to 100 parts by weight of a styrene-butadiene latex, according to a batchwise method. Accordingly, high grip performance is exhibited under a condition of heavy load, high slip and high speed, thereby being applicable to an ultra-high performance tire.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: June 27, 2017
    Assignee: HANKOOK TIRE CO., LTD.
    Inventor: Byung Lip Kim
  • Patent number: 9650503
    Abstract: This invention relates to a tire with tread for promoting a combination of winter service at low temperatures and for promoting wet traction. The tread is of a rubber composition containing low Tg styrene/butadiene elastomer and cis 1,4-polybutadiene rubber, along with high Tg liquid styrene/butadiene polymer, traction resin and vegetable triglyceride oil.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: May 16, 2017
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul Harry Sandstrom, Georges Marcel Victor Thielen, Pascal Patrick Steiner, Nihat Ali Isitman
  • Patent number: 9624358
    Abstract: The invention relates to a tire rubber composition based on at least one diene elastomer, an inorganic filler as reinforcing filler, a coupling agent providing the bonding between the inorganic filler and the diene elastomer, characterized in that the coupling agent is an azosilane compound of following formula (I): (G1)3-a(G2)aSi—Z—NH—C(O)—N?N—C(O)—NH—Z—Si(G1)3-a(G2)a??(I) in which: G1, identical to or different from one another, each represent a monovalent hydrocarbon-based group chosen from branched or unbranched, substituted or unsubstituted alkyls, having from 1 to 18 carbon atoms, substituted or unsubstituted cycloalkyls or aryls, having from 5 to 18 carbon atoms, G2, identical to or different from one another, each represent a hydroxyl group or a monovalent group in the form (G3)n-OG1 in which G3 is a divalent linking group having from 1 to 18 carbon atoms and comprising one or more heteroatoms chosen from O, S, Si and N, n being a number equal to or higher than 0 and less than or equal to 18, Z r
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 18, 2017
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Christelle Darnaud, José Carlos Araujo Da Silva, Karine Longchambon, Anne Veyland
  • Patent number: 9493639
    Abstract: The present invention relates to rubber mixtures comprising respectively at least one rubber, one sulfur-containing alkoxysilane, one silicon-based filler, and one ?-mercaptocarboxylic ester of polyhydric alcohols.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: November 15, 2016
    Assignee: LANXESS Deutschland GmbH
    Inventors: Ulrich Feldhues, Heinz Unterberg, Hermann-Josef Weidenhaupt, Melanie Wiedemeier-Jarad
  • Patent number: 9475924
    Abstract: A rubber composition for tire tread contains a diene-based rubber including 30 wt % or more of a terminal modifying group-containing conjugated diene-based copolymer, silica, carbon black, and at least one of silane coupling agents represented by specified formulae. The total amount of silica and carbon black in the composition is 35 to 140 parts by weight relative to 100 parts by weight of the diene-based rubber, while the silane coupling agent content is 4 to 18 wt % on the silica content. The copolymer is produced by a specified method such that the aromatic vinyl monomer content in the copolymer is 38 to 48 wt %, the vinyl unit content in all the conjugated diene-based monomers is 20 to 35 mol %, the weight average molecular weight of the copolymer is 600,000 to 1,000,000, and the terminal modifying group in the copolymer contains a functional group which interacts with the silica.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: October 25, 2016
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoshihiro Kameda, Makoto Ashiura
  • Patent number: 9475923
    Abstract: A rubber composition by which a rubber elastic body having both of excellent low rolling resistance and wet skid resistance and also having excellent mechanical strength and wear resistance can be obtained, a rubber elastic body, a tire, and a block copolymer are provided. The rubber composition of the present invention comprises a block copolymer (A) comprising a block (a-1) of a conjugate diene and an aromatic vinyl and a block (a-2) of a conjugate diene or the diene and an aromatic vinyl, a specific polymer (B) other than the copolymer, and a filler (C), wherein the block copolymer (A) has a specific functional group; the block copolymer (A) has two glass transition temperatures separated from each other by 5° C. or more within a range of ?100 to 20° C. in measurement in accordance with ASTM D3418; and the ratio of the block copolymer (A) is 10% by mass or more when the sum of the block copolymer (A) and the polymer (B) is taken as 100% by mass.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 25, 2016
    Assignee: JSR CORPORATION
    Inventors: Takaomi Matsumoto, Ryoji Tanaka
  • Patent number: 9365703
    Abstract: Rubber composition for treads, providing pneumatic tires (particularly for passenger vehicles and sport utility vehicles) having both excellent abrasion resistance and good wet grip performance. The rubber composition also provides the tires with good fuel economy and elongation at break. The rubber composition includes, per 100% by mass of a rubber component, 40-75% by mass of BR and 25-55% by mass of SBR, and includes, per 100 parts by mass of the rubber component, 40-120 parts by mass of a silica having a nitrogen adsorption specific surface area of 160-270 m2/g and 15-50 parts by mass of a carbon black having a nitrogen adsorption specific surface area of 100-250 m2/g. A ratio of a total content of silica to a total content of SBR in the rubber composition is 0.70-2.50, and a ratio of a total content of carbon black to a total content of BR therein is 0.25-0.75.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: June 14, 2016
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tatsuya Miyazaki
  • Patent number: 9096742
    Abstract: Provided is a pneumatic tire including a bead apex and/or sidewall reinforcing layer, which achieves balanced improvements in high-hardness properties, elongation at break, and self-heating properties to provide good run-flat durability while maintaining good processability. The pneumatic tire includes a bead apex and/or sidewall reinforcing layer formed from a rubber composition, the composition containing a rubber component (A) and carbon black (B), the rubber component (A) containing, per 100% by mass thereof: 10-75% by mass of a modified butadiene rubber (A1) with a cis content of 50% by mass or less; 5-40% by mass of a polybutadiene rubber (A2) containing 1,2-syndiotactic polybutadiene crystals; and 10-40% by mass of a diene rubber (A3) different from (A1) and (A2), the composition containing 35-65 parts by mass of carbon black (B) per 100 parts by mass of rubber component (A), the carbon black (B) having a BET specific surface area of 18-50 m2/g.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 4, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Toshifumi Haba, Tatsuya Miyazaki
  • Patent number: 9086105
    Abstract: Provided is a friction material composition comprising: a binder; a fibrous base material; an abrasive material; an inorganic filler; and an organic filler, wherein the friction material composition further comprises: at least one selected from the group consisting of zinc, a cellulose fiber as the fibrous base materials and a flame retardant fiber as the fibrous base materials; an iron-based fiber as the fibrous base material in an specified amount; and an inorganic abrasive material having a Mohs hardness of 8 or higher and a particle size of 1 ?m or larger as the abrasive material in an amount of 1 wt % or less.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: July 21, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Mitsuo Unno, Manabu Ono, Takashi Kikudome
  • Publication number: 20150148447
    Abstract: A rubber composition for tires comprises: per 100 parts by weight of diene rubber containing from 5 to 50 wt. % of terminally modified S-SBR, from 2 to 50 parts by weight of an aromatic modified terpene resin having a softening point of 100° C. or higher. A total content of 60 to 130 parts by weight of two types of silica, that is silica X and silica Y. A functional group of the modified S-SBR has reactivity with a silanol group. A proportion of the silica relative to a total amount of a reinforcing filler containing the silica X, the silica Y, and an optionally compounded carbon black is 85 wt. % or greater. A nitrogen adsorption specific surface area of the silica X is 140 m2/g or greater; a nitrogen adsorption specific surface area of the silica Y is greater than 100 m2/g and less than 140 m2/g.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 28, 2015
    Applicant: The Yokohama Rubber Co., LTD.
    Inventor: Shinya Takeda
  • Publication number: 20150148448
    Abstract: The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising from 20 to 90 parts by weight per 100 parts by weight of rubber (phr) of solution polymerized styrene-butadiene rubber, from 10 to 80 phr of polybutadiene rubber, wherein from 0 to 20 weight percent of the polybutadiene rubber is a syndiotactic polybutadiene rubber comprising at least 70 percent of monomeric units in syndiotactic 1,2 configuration and the balance of the polybutadiene rubber comprises at least 90 percent of monomeric units in cis-1,4 configuration; and from 50 to 150 phr of pre-hydrophobated precipitated silica wherein the pre-hydrophobated precipitated silica is hydrophobated prior to its addition to the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventors: Manfred Josef Jung, Jean-Paul Piret, Carlo Kanz, William Urbano Villamizar, Maurice Peter Klinkenberg, Eric Engeldinger, Uwe Ernst Frank
  • Publication number: 20150133581
    Abstract: The present invention relates to a silica-containing rubber mixture produced from at least one rubber, one sulphur-containing alkoxysilane, one crosslinking agent, one filler, and optionally further rubber auxiliary products and from 0.1 to 15 phr of a polysulphide additive of the formula (I) A-S—(S)x—S—Y—S—(S)x—S-A??(I) where x is 0, 1 or 2, Y is an aliphatic, cycloaliphatic or aromatic group that is optionally substituted or else comprises heteroatoms and A is an optionally substituted hydroxyethyl, carboxyaryl, hydroxyaryl, carboxyalkyl or thionamide moiety, and comprises from 0.1 to 15 parts by weight, based on 100 parts by weight of rubber used, of 1,6-bis(N,N-dibenzylthiocarbamoyldithio)hexane (CAS No.: 151900-44-6).
    Type: Application
    Filed: June 5, 2013
    Publication date: May 14, 2015
    Applicant: LANXESS Deutschland GmbH
    Inventors: Ulrich Feldhues, Heinz Unterberg, Hermann-Josef Weidenhaupt, Melanie Wiedemeier-Jarad
  • Publication number: 20150126643
    Abstract: The present technology provides a rubber composition for a tire which improves the low rolling resistance, dry performance, wet performance, and workability so as to surpass conventional levels. In the rubber composition for a tire according to the present technology, silica is blended into the composition in an amount of 90 to 150 parts by mass relative to 100 parts by mass of a diene rubber containing at least 25 mass % of a modified conjugated diene polymer rubber having a siloxane structure in at least some of the terminal-modifying groups. A silane coupling agent is blended into the composition in an amount of 3 to 20 mass % relative to the amount of silica, and an alkyltriethoxysilane having an alkyl group with 7 to 20 carbons is blended in an amount of 0.1 to 20 mass % relative to the amount of silica.
    Type: Application
    Filed: March 8, 2013
    Publication date: May 7, 2015
    Inventors: Masaki Satou, Makoto Ashiura, Masaki Satou
  • Publication number: 20150119492
    Abstract: A tire, the tread of which comprises a rubber composition comprising at least: one diene elastomer, one reinforcing filler, one plasticizing system comprising at least one thermoplastic hydrocarbon resin and at least one plasticizer based on one or more isosorbide diesters of following general formula (I): in which the R1 and R2 radicals, which are identical or different, independently represent a hydrocarbon radical comprising from 1 to 30 carbon atoms.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 30, 2015
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Didier Vasseur, JR., Christine Nourry, David Lavialle
  • Publication number: 20150119493
    Abstract: The present invention relates to diene polymers, wherein the diene polymers have, at the start of the polymer chains, tertiary amino groups of the formula (I) or (II) where R1, R2 are the same or different and are each alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si, Z is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si, and, at the end of the polymer chains, silane-containing carbinol groups of the formula (III) or metal salts thereof or semimetal salts thereof, where R3, R4, R5, R6 are the same or different and are each an H or alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si, A is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 30, 2015
    Inventors: Norbert Steinhauser, Thomas Gross, Fernanda Albino
  • Publication number: 20150119491
    Abstract: A rubber composition includes a diene rubber containing at least a polybutadiene rubber produced by use of a rare earth element based catalyst; a carbon black in an amount of 10 to 99 parts by mass for 100 parts by mass of the diene rubber; and a dihydrazide compound in an amount of 0.1 to 5.0 parts by mass for the same.
    Type: Application
    Filed: June 12, 2014
    Publication date: April 30, 2015
    Applicant: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Kazuya Hirabayashi
  • Publication number: 20150118429
    Abstract: The present invention relates to diene polymers or diene copolymers, wherein she diene polymers or diene copolymers have, at the start of the polymer chains, tertiary amino groups of the formula (Ia), (Ib), (IIa) or (IIb) where R1, R2 are the same or different and are each alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, M, S and/or Si, Z is a divalent organic radical which, as well as C and H, may contain heleroatoms such as O, N, S and/or Si, and, at the end of the polymer chains, silane-containing carbinol groups of the formula (III) or metal salts thereof or semimetal salts thereof, where R3, R4, R5, R6 are the same or different and are each an H or alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals which may contain heteroatoms such as O, N, S and/or Si, A is a divalent organic radical which, as well as C and H, may contain heteroatoms such as O, N, S and/or Si.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 30, 2015
    Inventors: Norbert Steinhauser, Thomas Gross, Fernanda Albino
  • Publication number: 20150111985
    Abstract: The present invention provides a rubber composition formed by blending from 1 to 100 parts by mass of carbon black and/or from 5 to 150 parts by mass of an inorganic filler, from 0.5 to 30 parts by mass of a sulfur-containing compounding agent, and from 0.01 to 20 parts by mass of a boron-containing compounding agent into 100 parts by mass of a sulfur-crosslinkable diene rubber, and a pneumatic tire in which the rubber composition is used in at least one type selected from the group consisting of a capped tread, a side wall, a belt, an inner liner, a carcass, and a bead.
    Type: Application
    Filed: March 19, 2013
    Publication date: April 23, 2015
    Inventor: Yusuke Tanabe
  • Publication number: 20150107733
    Abstract: The invention relates to a vegetable oil based rubber cement and tire with fabricated tread. In one embodiment, the invention relates to a tire with a rubber tread with a splice containing a vegetable oil based rubber cement. In one embodiment the tread rubber contains precipitated silica reinforcement. In one embodiment, the vegetable oil is comprised of soybean oil. In one embodiment the vegetable oil is provided in a vegetable oil extended elastomer. In one embodiment, the vegetable oil is provided as an additive to the rubber based adhesive.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 23, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventor: Paul Harry Sandstrom
  • Patent number: 9012535
    Abstract: The present invention is to provide a production method of a natural rubber master batch including a step of mixing a natural rubber latex and an aqueous slurry having carbon black dispersed in water, wherein a mixing amount of the carbon black is from 10 to 100 parts by mass based on 100 parts by mass of a natural rubber component; and the carbon black is satisfied with the relationships expressed by (1) 120<CTAB adsorption specific surface area<160, (2) 50<24M4DBP<100, and (3) 75<toluene discoloration transmittance<95. Also, the present invention is to provide a natural rubber master batch obtained by the subject production method. Furthermore, the present invention is to provide a rubber composition using the foregoing natural rubber master batch and a tire using the subject rubber composition.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: April 21, 2015
    Assignee: Bridgestone Corporation
    Inventors: Hiroshi Yamada, Atsushi Nakayama, Tomohiro Urata
  • Patent number: 9012560
    Abstract: The present invention provides a rubber composition that can enhance the fuel economy, wet-grip performance, and abrasion resistance in a balanced manner, and a pneumatic tire using this rubber composition. The present invention relates to a rubber composition that contains a rubber component, silica, and a silane coupling agent, wherein the rubber component contains, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified with a specific compound; an amount of the silica is 5 to 150 parts by mass per 100 parts by mass of the rubber component; and the silane coupling agent contains a mercapto group.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 21, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tetsuya Kunisawa, Tsuyoshi Tsuchida, Kenichi Uesaka, Isamu Tsumori, Reika Otake, Noboru Okabe, Naoya Omura, Tatsuhiro Tanaka, Takafumi Taguchi, Kenya Watanabe, Toru Iizuka
  • Publication number: 20150099823
    Abstract: Provided are a tread rubber composition that can achieve a balanced improvement in fuel economy, wet-grip performance, and abrasion resistance, and a pneumatic tire including the composition.
    Type: Application
    Filed: June 7, 2013
    Publication date: April 9, 2015
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yoji Imoto, Masato Kawase, Masako Nakatani, Ryuichi Tokimune, Akinori Nagae
  • Publication number: 20150087744
    Abstract: A rubber compound for the manufacture of antistatic tires used in vehicles comprising a rubber component derived from epoxidized natural rubber, a white filler component for reducing rolling resistance of said tire, an electrically conductive filler component, and a vulcanization agent. An antistatic tire for vehicles comprising a body and a tread wherein said tread is produced from said rubber compound above.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 26, 2015
    Applicant: Lembaga Getah Malaysia
    Inventors: Kok Chong Yong, Ahmad Kifli Che Aziz
  • Publication number: 20150087745
    Abstract: Rubber articles, including tires and tire treads, that are manufactured from a rubber composition that includes a functionalized styrene-butadiene rubber (SBR) and a polybutadiene rubber, wherein the functionalized SBR includes a functional group attached as an active moiety and wherein the butadiene portion of the SBR has as trans-1,4 content of between 30 wt. % and 70 wt. %. The rubber composition further includes a plasticizing system having a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid, wherein the plasticizing system is added in an effective amount to provide the rubber composition with a glass transition temperature of between ?25° C. and ?15° C. and with a dynamic modulus G* at 60° C. of between 0.8 MPa and 1.3 MPa. The rubber composition is reinforced with a silica filler.
    Type: Application
    Filed: March 30, 2012
    Publication date: March 26, 2015
    Inventors: Yuri A Chekanov, Raymond Stubblefield
  • Publication number: 20150080493
    Abstract: A rubber composition for a tire tread comprising 100 parts by mass of a diene rubber, 10 to 150 parts by mass of a reinforcing filler, and 0.1 to 30 parts by mass of an acid-treated silk powder having a 90% volume particle diameter (D90) of 500 ?m or less. A pneumatic tire having a tread comprising the rubber composition.
    Type: Application
    Filed: July 3, 2014
    Publication date: March 19, 2015
    Applicant: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Shinsaku Kamada
  • Patent number: 8980974
    Abstract: A low copper-containing friction material composition used for brake pad is provided, which consists of 4-6 parts of aramid fiber, 2-2.5 parts of tire powder, 5-6 parts of magnesia, 5-6 parts of red vermiculite, 8-10 parts of ceramic fiber, 3.5-5 parts of magnetite, 7-8 parts of boron-containing phenolic resin, 15-17 parts of calcium sulfate crystal whisker, 16-18 parts of potassium titanate, 15-17 parts of barite, 5.5-7 parts of flake graphite, 6-8 parts of friction powder of cashew nut oil, 6-8 parts of calcined petroleum coke, 1.5-2 parts of boron nitride, 5-7 parts of flake aluminum powder, 0.4-0.5 parts of pure copper fiber, and 0.4-0.6 parts of black silicon carbide. The friction material composition has low content of heavy metal, wherein the content of copper is lower than 0.5%, has a satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: March 17, 2015
    Assignee: Ruiyang Automotive Materials (Xiantao) Co., Ltd.
    Inventor: Jim Zewei Zhang
  • Publication number: 20150073067
    Abstract: The present invention provides a rubber composition that can offer excellent abrasion resistance when applied to a tire member such as a tread, without deteriorating rolling resistance. To solve the problem, a rubber composition according to the present invention contains a rubber component, hydrous silicate, and a surfactant, in which the hydrous silicate is modified by the surfactant before being kneaded with the rubber component.
    Type: Application
    Filed: May 8, 2013
    Publication date: March 12, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kouichi Saitou
  • Publication number: 20150057391
    Abstract: Provided are a rubber composition for tire tread containing 100 parts by weight of raw material rubber, 10 parts to 100 parts by weight of a reinforcing filler, and 1 part to 20 parts by weight of a silane compound represented by the following formula (1), the raw material rubber containing 40 parts to 90 parts by weight of a styrene-butadiene rubber and 10 parts to 60 parts by weight of a butadiene rubber; and a tire produced using the rubber composition. The rubber composition for tire tread exhibit improved dispersibility, processability, mechanical characteristics, abrasion resistance performance, and rolling resistance characteristics. wherein X represents a vinyl group; Y represents an alkoxy group; Z represents an alkoxy group; a represents an integer from 0 to 6; b and c each independently represent an integer from 0 to 2 and do not necessarily represent 0 at the same time; and x represents an integer from 1 to 3.
    Type: Application
    Filed: March 21, 2014
    Publication date: February 26, 2015
    Applicant: HANKOOK TIRE CO., LTD.
    Inventors: Cheol Han KANG, Il Yong PARK
  • Publication number: 20150057392
    Abstract: The present invention relates to a random copolymer including a monomer unit (a) derived from an aromatic vinyl compound and a monomer unit (b) derived from farnesene; a process for producing the copolymer including at least the step of copolymerizing an aromatic vinyl compound with farnesene; a rubber composition including (A) the copolymer, (B) a rubber component and (C) carbon black; a rubber composition including (A) the copolymer, (B) a rubber component and (D) silica; a rubber composition including (A) the copolymer, (B) a rubber component, (C) carbon black and (D) silica; and a tire using the rubber composition at least as a part thereof.
    Type: Application
    Filed: April 2, 2013
    Publication date: February 26, 2015
    Applicants: KURARAY CO., LTD., AMYRIS, INC.
    Inventors: Daisuke Koda, Kei Hirata
  • Patent number: 8962711
    Abstract: A copper-flee friction material composition for brake pads consists of: 0.43 parts of aramid fiber, 1.9 parts of tire powder, 6 parts of heavy magnesia, 2.55 parts of calcined petroleum coke, 8 parts of ceramic fiber, 6.5 parts of phenolic resin, 14 parts of aluminum silicate fiber, 22 parts of potassium hexatitanate crystal whisker, 25 parts of barite powder, 5 parts of granular graphite, 2 parts of antimony sulfide, 2.8 parts of friction powder of cashew nut oil, 0.9 part of boron nitride, 5 parts of flake aluminum powder, and 0.6 parts of tantalum carbide. Trials show that it has satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient. With the friction material of the present invention used, the brake pad of vehicles is sensitive and stable during braking, produces no screech, is comfortable and has no damage on coupling plate.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 24, 2015
    Assignee: Ruiyang Automotive Materials (Xiantao) Co., Ltd.
    Inventor: Jim Zewei Zhang
  • Publication number: 20150031788
    Abstract: A low copper-containing friction material composition used for brake pad is provided, which consists of the following components by weight parts: 4˜6 parts of aramid fiber, 2˜2.5 parts of tyre powder, 5˜6 parts of heavy magnesia, 5˜6 parts of red vermiculite, 8˜10 parts of ceramic fiber, 3.5˜5 parts of magnetite, 7˜8 parts of boron-containing phenolic resin, 15˜17 parts of calcium sulfate crystal whisker, 16-18 parts of potassium titanate, 15˜17 parts of barite, 5.5˜7 parts of flake graphite, 6˜8 parts of friction powder of cashew nut oil, 6˜8 parts of calcined petroleum coke, 1.5˜2 parts of boron nitride, 5˜7 parts of flake aluminum powder, 0.4˜0.5 parts of pure copper fiber, 0.4˜0.6 parts of black silicon carbide. Said friction material composition is highly environmental friendly and has low content of heavy metal, wherein the content of copper is lower than 0.5%, and an excellent friction layer and transfer membrane can be formed when using said friction material composition.
    Type: Application
    Filed: June 22, 2011
    Publication date: January 29, 2015
    Applicant: Ruiyang Automotive Materials (Xiantao) Co., Ltd.
    Inventor: Jim Zewei Zhang
  • Publication number: 20150031789
    Abstract: A rubber tyre compound having a polymer base; a curing system, which cures the polymer base by means of heating; and basalt fibres with a length/diameter ratio ranging from 20 to 2000.
    Type: Application
    Filed: December 24, 2012
    Publication date: January 29, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Francesco Botti, Pasquale Agoretti