Abstract: The present invention provides a rubber composition capable of improving the rubber strength and fuel economy in a balanced manner, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition including a rubber component, carbon black, and a compound represented by formula (I) below, wherein the amount of the carbon black is 10 to 100 parts by mass per 100 parts by mass of the rubber component: wherein R1 and R2 are the same as or different from each other, and each represent a hydrogen atom, a C1-C20 alkyl group, a C1-C20 alkenyl group, or a C1-C20 alkynyl group; Mr+ represents a metal ion; and r represents a valence of the metal ion.

Abstract: A rubber composition includes high molecular weight diene elastomer, 5 to 120 phr of silica, 0 to 100 phr of a carbon black, and a silane modified oligomer including diene monomers and optionally vinyl aromatic monomers in polymerized form, wherein the silane modified oligomer has a molecular weight of 1000 to 5000 g/mol. A method of making the rubber composition includes compound mixing the components of the rubber composition in situ.

Abstract: A pneumatic truck drive tire comprising a tread, the tread comprising a tread cap, a tread base, and a tread underlayer disposed between the tread cap and the tread base; the tread cap comprising a rubber composition comprising 100 part by weight, per 100 parts by weight of rubber (phr) of a rubber consisting of from 52 to 64 phr of polyisoprene rubber, from 22 to 27 phr of polybutadiene rubber, and from 13 to 21 phr of styrene-butadiene rubber; and 47 to 57 phr of carbon black; wherein the tread cap has a tan delta (100° C., 10% strain, 1 Hz) ranging from 0.13 to 0.16, a storage modulus (100° C., 1% strain, 1 Hz) ranging from 2 to 2.5 MPa, and a tear strength (100° C.) ranging from 19 to 23 N; the undertread comprising a rubber composition comprising 100 phr of a rubber consisting of from 71 to 86 phr of polyisoprene rubber and from 14 to 29 phr of polybutadiene rubber; from 19 to 23 phr of silica; and from 29 to 36 phr of carbon black wherein the undertread has a tan delta (100° C.

Abstract: An object of the present invention is to provide a tire rubber composition capable of producing a studless tire that has excellent performance on ice and wear resistance, and to provide a studless tire using the composition. The tire rubber composition of the present invention is composed of 100 parts by mass of a diene type rubber (A), from 30 to 100 parts by mass of a carbon black and/or a white filler (B), from 0.3 to 30 parts by mass of a cross-linkable oligomer or polymer (C) that is not phase-soluble with the diene type rubber (A); and from 0.1 to 12 parts by mass of three dimensionally crosslinked fine particles (D) of 1 to 200 ?m average particle diameter.

Abstract: A rubber composition for manufacturing tyres is based on one or more diene elastomers, one or more reinforcing fillers, and a vulcanization system. The vulcanization system includes one or more 1,2,4-triazine compounds chosen from compounds of formula I and compounds of formula II: Certain specific 1,2,4-triazine derivatives are described.

Abstract: 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.

Abstract: The invention relates to a tire with an outer rubber sidewall layer containing elastomers consisting of synthetic elastomers.

Abstract: The invention relates to a tire with tread of a rubber composition containing a functionalized elastomer and pre-hydrophobated precipitated silica reinforcement.

Abstract: A rubber composition for a sidewall is disclosed, which includes a specific amount of an alkylphenol-sulfur chloride condensate indicated by the formula (B1): and a specific filler, based on a rubber component including a specific amount of a natural rubber and/or an isoprene rubber and a modified butadiene rubber. A tire having the above sidewall is also disclosed.

Abstract: A rubber composition for sidewall and a tire having sidewall using thereof as well as a rubber composition for clinch and a tire having clinch using thereof that adjust scorch time and suppress surface bloom, reduce rolling resistance, can obtain sufficient rigidity as sidewall and clinch, and can improve elongation at break and durability is disclosed. Specifically, a rubber composition for sidewall and a rubber composition for clinch including specific amount of an alkylphenol-sulfur chloride condensate indicated by the formula (B1): and specific filler, based on a rubber component including specific amount of a natural rubber and/or an isoprene rubber and a butadiene rubber and/or an epoxidized natural rubber, and a tire having sidewall using thereof and clinch using thereof is disclosed.

Abstract: 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.

Abstract: A polypropylene resin composition, including 75-90 wt. % of polypropylene resin as a matrix, 7-15 wt. % of hydrogenated styrene-butadiene-styrene copolymer elastomer (A) having a styrene content of 18-42 wt. %, and 3-10 wt. % of hydrogenated styrene-butadiene-styrene copolymer elastomer (B) having a styrene content of 12-15 wt. %. The polypropylene resin composition has an excellent scratch resistance compatible with impact resistance, and outstanding melt-moldability and is suitable for providing a colored-resin molding compound.

Abstract: The present invention provides a rubber composition for a tread which enables not only to improve handling stability, abrasion resistance, and fuel economy in a balanced manner, but also to improve wet grip performance and processability in a balanced manner, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a tread, comprising a terminally-modified solution-polymerized styrene-butadiene rubber, a butadiene rubber synthesized in the presence of a rare earth catalyst, and a reinforcing agent.

Abstract: A continuous process for preparing a pressure sensitive adhesive using a planetary roller extruder is described. The continuous process includes introducing at least one non-thermoplastic elastomer into a planetary roller extruder and initially compounding the non-thermoplastic elastomer in the planetary roller extruder to form an initially masticated non-thermoplastic elastomer. Then, a solid raw material, a liquid material, or both are introduced into the initially masticated non-thermoplastic elastomer in the planetary roller extruder, and subsequent compounding of the initially masticated non-thermoplastic elastomer with these additional components occurs to form an adhesive composition.

Abstract: 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.

Abstract: The present invention relates to polymers functionalized by terminal groups, where these have, at the chain end, an ether-containing carbinol group of the formula (I) ?O-A-OH]??(I) where A is a divalent organic moiety which can comprise not only C and H but also heteroatoms, such as O, N, S, Si.

Abstract: A rubber composition which can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and a tire having small rolling resistance and excellent impact resilience are provided. The rubber composition of the present invention is obtained by kneading a rubber component comprising a conjugated diene polymer having at least one functional group selected from the group consisting of a tertiary amino group, a thiol group, an epoxy group, a thioepoxy group, an oxetane group and a hydrocarbylthio group, a catalyst for condensing silanol, and silica.

Abstract: The present invention provides a rubber composition that is used for manufacturing a rubber excellent in weather resistance, fracture resistance and crack growth resistance, and that contains a conjugated diene compound/non-conjugated olefin copolymer, a conjugate diene-based polymer and a non-conjugated diene compound/non-conjugated olefin copolymer, a rubber composition for tire side use using the rubber composition for tire sidewall members, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire. The rubber composition includes: (A) a conjugated diene compound/non-conjugated olefin copolymer containing a conjugated diene compound-derived unit by at least 40 mol %; (B) a conjugated diene-based polymer; and (C) a non-conjugated diene compound/non-conjugated olefin copolymer containing an ethylene-propylene-diene rubber.

Abstract: The present invention provides a tire rubber composition which improves in fuel economy, processability, adhesion, and rubber strength in a balanced manner, and a pneumatic tire. The tire rubber composition includes: a rubber component; a plasticizer (a); and at least one of a resin and a plasticizer (b), the resin being at least one selected from the group consisting of aromatic petroleum resins, terpenic resins, and rosin resins. The plasticizer (a) has a glass transition point of ?50° C. or lower. The resin and the plasticizer (b) each have a glass transition point of ?40° C. to 20° C. The tire rubber composition includes, for each 100 parts by mass of the rubber component, 1 to 30 parts by mass of the plasticizer (a) and 1 to 30 parts by mass in total of the at least one of the resin and the plasticizer (b).

Abstract: A composition comprising at least the following components: (A) a first composition comprising the following: i) a first interpolymer comprising, in polymerized form, ethylene, an ?-olefin, and a nonconjugated polyene; ii) a second interpolymer comprising, in polymerized form, ethylene, an ?-olefin and a nonconjugated polyene; and wherein the first composition has an MWD less than, or equal to, 3.5, a Mooney Viscosity (ML (1+4 @125° C.)) greater than, or equal to, 80, and an [(ML(1+4 @125° C.))/Mw(conv)]*1000 greater than 0.429 mole/g; (B) a thermoplastic polymer; and (C) a vulcanization agent is provided. A crosslinked composition made by heating one or more of the inventive compositions is also provided. Articles made from one or more of the inventive compositions are also provided.

Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler comprising at least carbon black and an inorganic filler with an inorganic filler content of less than or equal to 50 parts by weight per hundred parts of elastomer, characterized in that the composition is obtained from a first masterbatch comprising at least one first diene elastomer and carbon black, and having a dispersion of the carbon black in the elastomeric matrix that has a Z value of greater than or equal to 90, added to which is the inorganic filler and at least one second elastomer, identical to or different from the first elastomer, and also to the process for preparing such a composition.

Abstract: Pneumatic rubber tire with a component comprised of a silica reinforced rubber composition comprised of specialized polybutadiene rubber, functionalized styrene/butadiene elastomer and cis 1,4-polyisoprene rubber.

Abstract: A tyre, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: 20 to 100 phr of a first diene elastomer bearing at least one SiOR function, with R being hydrogen or a hydrocarbon radical, and with phr referring to parts by weight per hundred parts of elastomer; 100 to 160 phr of a reinforcing inorganic filler; and a plasticizing system. The plasticizing system includes: a content A of between 5 and 60 phr of a hydrocarbon resin having a Tg above 20° C.; and a content B of between 5 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 45 phr. The rubber composition optionally includes 0 to 80 phr of a second diene elastomer.

Abstract: The present invention provides a rubber composition for a tire, which results in both excellent fuel economy and high wet grip performance as well as good abrasion resistance; and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a tire, the rubber composition containing a modified styrene butadiene rubber formed using a specific nitrogen-containing compound as a monomer, silica, and a specific amount of a diene rubber gel.

Abstract: This invention relates to preparation of precipitated silica-containing EPDM based rubber compositions and their use as components of articles of manufacture such as, for example, tires and industrial products. Such preparation relies upon phase mixing of EPDM based rubber compositions which contain particulate reinforcement, such as for example precipitated silica, which may optionally include exfoliated clay reinforcement, to create an enhanced EPDM rubber composition. In one aspect, the invention relates to a pneumatic rubber tire with a visible outer sidewall rubber layer comprised of such rubber composition.

Abstract: A rubber blend, particularly for pneumatic vehicle tires, harnesses, straps and hoses. The rubber blend includes at least one rubber blend A of a solid styrene-butadiene rubber with an average molecular weight Mn of 100,000 to 5,000,000 g/mol and a liquid butadiene rubber with an average molecular weight Mn of 500 to 9000 g/mol, wherein the styrene-butadiene rubber is solution-polymerized or emulsion-polymerized, as well as 30 to 300 phr of at least one silicic acid and further blend components.

Abstract: The present invention relates to polymers functionalized by terminal groups, where these have, at the chain end, a silane-containing carbinol group of the formula (I) where R1, R2, R3, R4 are identical or different and are H, alkyl moieties, cycloalkyl moieties, aryl moieties, alkaryl moieties and aralkyl moieties, where these can comprise heteroatoms such as O, N, S, Si, A is a divalent organic moiety which can comprise, alongside C and H, heteroatoms such as O, N, S, Si.

Abstract: A tyre, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: from 50 to 100 phr of a copolymer based on styrene and butadiene, e.g., a styrene/butadiene copolymer (SBR), with phr referring to parts by weight per hundred parts of elastomer; from 100 to 150 phr of a reinforcing inorganic filler, e.g., silica; and a plasticizing system. The plasticizing system includes: a content A of between 10 and 60 phr of a thermoplastic hydrocarbon resin exhibiting a Tg of greater than 20° C.; and a content B of between 10 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 50 phr. Optionally, the rubber composition includes from 0 to 50 phr of another copolymer, e.g., a diene elastomer such as a polybutadiene or natural rubber.

Abstract: The present invention describes a composition comprising a diene-based rubber and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether. The present invention also describes a composition comprising at least one extending oil and at least one cyclo-aliphatic epoxide-based polyether or polyglycol ether, wherein the at least one extending oil is selected from the group consisting of an aromatic oil, an aliphatic oil, a naphthenic oil, and mixtures thereof.

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.

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.

Abstract: A system for devulcanizing rubber by contacting vulcanized rubber with a turpentine liquid in a reaction mixture in the absence of an alkali metal.

Abstract: A pneumatic tire for a commercial vehicle with a tread, wherein at least the part of the tread which comes into contact with the road contains a sulphur-vulcanized rubber mixture. The sulphur-vulcanized rubber mixture contains 90 to 50 phr (parts by weight, based on 100 parts by weight, of all of the rubbers in the mixture) of natural rubber, 10 to 50 phr of at least one polybutadiene having a glass transition temperature Tg of ?110 to ?65° C. and 5 to 50 phr of at least one aliphatic and/or aromatic hydrocarbon resin having a softening point (ring and ball to ASTM E 28) of 0 to 150° C., and a mean molecular weight Mn of less than 2000 g/mol and a polydispersity D=Mw/Mn of 1 to 5.

Abstract: Elastomeric isoprene rubber compositions contain an effective amount of a coupling system (A) as an inorganic filler/elastomer coupling agent, and (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcing filler, (D) other conventional constituents or additives comprising (a) vulcanization agent(s), the coupling system (A) being a particular mixture of the following combination of constituents (A1) and (A2): (A1) is at least one coupling agent selected from among the following functionalized organosilicon compounds of formula (I):[(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z—CO—N?N—CO-A)SiO(3-a-a?)/2]g and (A2) is at least one coating agent for the reinforcing filler including one compound with the single function Y in the structure thereof which is capable of bonding physically and chemically to the inorganic filler and resulting in an increase in dispersion of the charge within the rubber matrix and a reduction in viscosity of the composition.

Abstract: Elastomeric isoprene rubber compositions contain an effective amount of a coupling agent (A) comprising an organosilicon compound with coupling agent functions for inorganic/elastomeric fillers and include (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcement filler, (D) other conventional constituents or additives comprising vulcanization agents; the coupling agent (A) being a functionalized organosilicon compound, including the following two compounds (i) and (2i), (i) being at least one functionalized siloxane corresponding to the formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n [G0SiO3/2]o [SiO4/2]p [(G2)a(G1)a?(Z—CO—N?N—CO-A)SiO(3-a-a?)/2]q and (2i) being a mixture of at least one functionalized siloxane (i) with (3i) at least one functionalized organosilane also corresponding to formula (I) where m=n=o=p=0 (zero), q=1, a=0, 1, 2 or 3 and the sum a+a?=3.

Abstract: A rubber composition for a tire sidewall includes 100 parts by mass of a rubber component comprising from 40 to 70% by mass of natural rubber and/or an isoprene rubber, and from 60 to 30% by mass of a butadiene rubber having 96% or more of cis-1,4 bond content, polymerized using a rare earth element-based catalyst, from 25 to 50 parts by mass of a filler comprising carbon black and/or silica, and from 0.3 to 3 parts by mass of a vulcanization accelerator, wherein the vulcanization accelerator comprises from 0.1 to 1.5 parts by mass of a sulfenimide compound represented by the following formula (1) and a sulfenamide-based vulcanization accelerator; wherein R represents a hydrocarbon group having from 1 to 18 carbon atoms.

Abstract: Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as “elastomer A”, and a natural rubber or synthetic polyisoprene elastomer, referred to as “elastomer B”, the elastomer A:elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler, in which, during a first stage or stage (a), a masterbatch comprising at least the elastomers A and B and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.

Abstract: A rubber composition usable as tread for a winter tire, having a high grip on melting ice, comprising at least one diene elastomer such as natural rubber and/or a polybutadiene, more than 30 phr of a liquid plasticizing agent, between 50 and 150 phr of a reinforcing filler such as silica and/or carbon black, and between 5 and 40 phr of magnesium sulphate microparticles.

Abstract: Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a solid unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler; between 0.5 and 15 phr of thiuram polysulphide, in which, during a first stage or stage (a), a masterbatch comprising at least the solid unsaturated diene elastomer and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.

Abstract: Tires, especially tires for passenger and light track vehicles, that have treads constructed of a silica reinforced material that is based upon a cross-linkable rubber composition that includes, per hundred parts by weight of rubber (phr), between 50 phr and 90 phr of natural rubber and between 10 phr and 50 phr of a silanol end-functionalized styrene-butadiene rubber and may include between 5 phr and 40 phr of a plasticizing resin. The plasticizing resin may be characterized as having a glass transition temperature Tg of between 30° C. and 120° C. or alternatively, between 45° C. and 85° C. The plasticizing resin may be a polylimonene resin. Tires manufactured with such treads may be characterized as having improved rolling resistance with no loss in wet or dry grip properties.

Abstract: A tire, the tread of which comprises a rubber composition comprising at least a diene elastomer, such as, for example, an SBR or BR elastomer, a thermoplastic elastomer vulcanizate of EPDM and polypropylene, at a content preferably of greater than 5 phr, and a reinforcing filler, such as silica and/or carbon black. Such a composition confers, on the tire, an improvement in the wet grip.

Abstract: A laser-engravable composition comprises one or more EPDM elastomeric rubbers, at least one of which comprises at least 8 weight % polyene recurring units. This laser-engravable composition of elastomeric rubbers can be quickly crosslinked using sulfur-containing vulcanizing compositions to provide laser-engravable compositions and layers in flexographic printing plate precursors. These precursors can be laser-engraved to provide relief images for flexographic printing.

Abstract: The present invention relates to a pneumatic rubber tire having an integral innerliner of a rubber composition comprised of a combination of cis 1,4-polyisoprene rubber and medium to high vinyl styrene/butadiene rubber together with compatible resin.

Abstract: Disclosed are a resin composition for laser engraving, comprising (Component A) at least one polymer selected from the group consisting of following (Component A-1) to (Component A-3), (Component B) a polyfunctional ethylenically unsaturated compound, and (Component C) a polymerization initiator, (Component A-1) a polyisoprene that is a plastomer at 20° C. and does not have an ethylenically unsaturated group at the ends of the main chain, (Component A-2) a polybutadiene that is a plastomer at 20° C. and does not have an ethylenically unsaturated group at the ends of the main chain, and (Component A-3) an unsaturated polyester urethane that is a plastomer at 20° C., has an ethylenically unsaturated group in the interior of the main chain, and does not have an ethylenically unsaturated group at the ends of the main chain.

Abstract: A rubber composition, which can be used for manufacturing tyres, is based on one or more diene elastomers, on one or more reinforcing fillers, and on a crosslinking system. The rubber composition includes particles of one or more thermoplastic materials chosen from thermoplastic materials with melting or softening points varying from 80° C. to 300° C. The rubber composition also includes one or more compatibilizing agents chosen from block copolymers that includes at least one diene elastomer block and at least one thermoplastic block compatible with the one or more thermoplastic materials.

Abstract: A rubber composition for a tire, and a pneumatic tire are provided in which the fuel economy, abrasion resistance, and deterioration resistance can be improved in a good balance. The present invention relates to a rubber composition for a tire, containing a rubber component that contains: a modified natural rubber having a phosphorus content of not more than 200 ppm; and butadiene rubber, wherein 60 to 95% by mass of the modified natural rubber and 5 to 40% by mass of the butadiene rubber are contained based on 100% by mass of the rubber component.

Abstract: The disclosure is directed to a thermoplastic vulcanizate composition comprising a dynamically-cured rubber; from about 20 to about 300 parts by weight of a thermoplastic resin per 100 parts by weight rubber and from about 30 to about 250 parts by weight additional oil per 100 parts by weight rubber; wherein the rubber comprises a multimodal polymer composition cured with a curing agent, the multimodal polymer composition comprising 45 to 75 wt % of a first polymer fraction and 25 to 55 wt % of a second polymer fraction, each comprising ethylene, a C3-C10 alpha-olefin, and a non-conjugated diene. A method of producing the thermoplastic vulcanizate is also disclosed.

Abstract: Tires having treads constructed of a material that is based upon a cross-linkable rubber composition, the rubber composition in some embodiments including between 25 phr and 5.0 phr of a butadiene rubber and between 50 phr and 75 phr of a styrene-butadiene rubber (SBR). wherein the butadiene portion of the SBR has at least 50% vinyl content. The rubber composition may further include between 25 phr and 60 phr of a plasticizing resin having a glass transition temperature Tg of between 30° C. and 120° C. and between 25 phr 60 phr of a vegetable oil. The ratio of the vegetable oil phr to the high Tg resin phr may, in some embodiments, be between 0.75 and 3. Further, such rubber compositions may also be reinforced with between 100 phr and 200 phr of a silica filler.

Abstract: The present invention relates to a chafer using a rubber composition for a chafer comprising: (A) a diene rubber comprising (A1) 10 to 60% by mass of a butadiene rubber containing 2.5 to 20% by mass of a 1,2-syndiotactic polybutadiene crystal, (A2) 5 to 50% by mass of a tin-modified butadiene rubber polymerized with a lithium initiator and having 50 to 3000 ppm content of tin atoms, 5 to 50% by mass of vinyl bond amount and a molecular weight distribution of at most 2.0, and (A3) 20 to 75% by mass of a diene rubber other than the butadiene rubber (A1) and the tin-modified butadiene rubber (A2); and (B) 5 to 30 parts by mass of silica; and (C) 30 to 55 parts by mass of carbon black based on 100 parts by mass of the diene rubber components.

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, the vulcanization system comprising one or more thiazole compounds of formula: