Abstract: The invention is directed to a pneumatic tire comprising a vulcanization rubber composition, the vulcanizable rubber composition comprising: from 30 to 90 phr of a first functionalized styrene-butadiene rubber having a glass transition temperature Tg1 ranging from ?70 to ?50° C.; from 10 to 50 phr of a second functionalized styrene-butadiene rubber having a glass transition temperature Tg2 ranging from ?110 to ?70° C.; wherein Tg2?Tg1 is at least 10° C.; from 0 to 40 phr of at least one additional elastomer; from 50 to 150 phr of silica; from 0 to 50 phr of a hydrocarbon resin; and from 10 to 50 phr of an oil.

Abstract: Tire (1) comprising a carcass reinforcement (2) surmounted by a crown reinforcement (3), itself capped by a tread (7), the said tread being connected to two beads (6) via two sidewalls (4) each having an exterior surface (40), at least one of the said sidewalls comprising at least two circumferential protrusions (5a, 5b, 5c), each sidewall (4) comprising an equator point (E) situated on the exterior surface of the sidewall radially at the same position as the axially outermost point (20) of the carcass reinforcement (2) in the unladen reference configuration, each circumferential protrusion (5a, 5b, 5c) being bounded by a radially upper wall (51), by a radially lower wall (52), and by a connecting wall (53) situated between the radially upper wall (51) and the radially lower wall (52) tire.

Abstract: In a first aspect, the present invention is directed to a rubber composition comprising, based on 100 parts by weight of elastomer (phr), 70 phr to 95 phr of diene based elastomer, wherein said diene based elastomer comprises 25 phr to 60 phr of a first diene based elastomer having a glass transition temperature within a range of ?49° C. to ?15° C., and 10 phr to 45 phr of a second diene based elastomer having a glass transition temperature within a range of ?50° C. to ?110° C., 5 phr to 30 phr of one or more of natural rubber and synthetic polyisoprene rubber, 40 phr to 70 phr of silica, and 10 phr to 40 phr of at least one terpene resin having a weight average molecular weight (Mw) of at least 900 g/mol. In another aspect, the present invention is directed to tire comprising a tire tread with aforementioned rubber composition.

Abstract: A tire has a tread comprising a rubber composition based on at least an elastomer matrix, a reinforcing filler comprising between 65 and 115 phr of a reinforcing inorganic filler, more than 30 phr of a plasticizing agent, and more than 5 phr of crumb rubber particles having a median particle size by volume, which is measured by laser diffraction methods in accordance with ISO standard 13320-1, which satisfy the following relations: 100 ?m<D50<1000 ?m, wherein D50 is the medium particle size by volume corresponding to 50% of a cumulative distribution obtained from the volume particle size distribution.

Abstract: This invention relates to a rubber composition containing filler reinforcement comprised of precipitated silica with silica coupling agent therefore and conjugated diene-based elastomer which contains end-chain functionalization with multi-functional groups. The groups functionalizing the elastomer are multi-functional in the sense of containing one group reactive with at least one of said precipitated silica and silica coupling agent and another different group reactive with diene-based elastomers through sulfur cure of the rubber composition. A sulfur cured rubber composition containing said end-chain functionalization is provided. A tire is provided having a component comprised of said rubber composition. Representative of said tire component is a tire tread.

Abstract: A modified natural rubber has a branching degree of 0.40 to 0.70 and includes a linking structure represented by formula (C), the linking structure having been formed by allowing polyisoprene, having a structure represented by formula (A) and/or formula (B), to bind in the structure to an amino compound having two or more primary amino groups: wherein X represents a hydrogen atom or a methyl group, and Ps, which may be the same or different from each other, represent a polyisoprene unit; W-(Q)m??(C) wherein W represents a residue obtained by removing amino end groups from the amino compound Q represents at least one selected from the group consisting of the following general formulae (Q-1) to (Q-4), and m represents 2 to 4; wherein *1 indicates binding to a carbon atom of a polyisoprene unit, and *2 indicates binding to a carbon atom of the residue represented by W.

Abstract: There is provided a method for producing a recycled material, whereby a recycled material can be efficiently obtained from a tire. The method for producing a recycled material according to the present invention includes a step of subjecting a tire to a gasification treatment to generate a gas containing a C1 gas from the tire, and a step of obtaining a recycled material containing at least one species selected from the group consisting of isoprene, butadiene, a butanediol compound, a butanol compound, a butenal compound, succinic acid, and polymers of these compounds by using the gas containing the C1 gas.

Abstract: The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture comprising the rubber blend and to a vehicle tire comprising such a rubber mixture. The rubber blend comprises at least one solution-polymerized diene polymer A of high molecular weight and at least one solution-polymerized polymer B of low molecular weight, wherein at least one of polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups and amino group-containing alkoxysilyl groups.

Abstract: A tire has an outer sidewall, said outer sidewall comprising at least one composition based on an elastomeric matrix comprising: one or more thermoplastic elastomers comprising at least one elastomer block and at least one thermoplastic block, the elastomer block(s) not denoting one or more polyisobutylene blocks; and one or more synthetic diene elastomers selected from butadiene polymers having a glass transition temperature of less than or equal to ?50° C.; said composition comprising at least one crosslinking system and one or more reinforcing fillers.

Abstract: A rubber composition for a tire tread according to an embodiment includes a rubber component containing a natural rubber, a styrene-butadiene rubber, and a polybutadiene rubber; oil-absorbent polymer particles having a glass transition temperature of ?70 to ?20° C., formed from a polymer whose molecular weight distribution is less than 3.0, and having an oil absorption of 100 to 1,500 ml/100 g; an oil; and silica. The content of the oil-absorbent polymer particles is 0.5 to 25 parts by mass per 100 parts by mass of the rubber component. As a result, snow performance and wet performance can be improved.

Abstract: A rubber composition for vibrationproof rubber is disclosed in which when a total amount of one or more rubber components is regarded as 100 parts by mass, a solution-polymerized styrene butadiene rubber is included in an amount of 85 to 100 parts by mass. This solution-polymerized styrene butadiene rubber is a rubber in which an amount-proportion of styrene is from 10 to 45% by mass, and an amount-proportion of vinyl is from 30 to 65% by mass. The solution-polymerized styrene butadiene rubber is preferably a modified solution-polymerized styrene butadiene rubber. When the total amount of rubber components is regarded as 100 parts by mass, the solution-polymerized styrene butadiene rubber is preferably included therein in an amount of 90 to 100 parts by mass. A carbon black is preferably included therein in an amount of 30 to 100 parts by mass for the same 100 parts by mass.

Abstract: The present invention provides a rubber composition for tires which provides significantly improved abrasion resistance while maintaining fuel economy, and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires including: a silane coupling agent containing an alkoxysilyl group and a sulfur atom, the alkoxysilyl group being linked to the sulfur atom by six or more carbon atoms; and sulfur, the rubber composition including, per 100 parts by mass of the rubber component therein, 1.5 parts by mass or less of the sulfur.

Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.

Abstract: A door include a first skin, a second skin, and a glazing unit. The first skin includes a first skin body portion, and a first flange portion extending inward from the first skin body portion. The first skin body portion has a first tip. A second skin includes a second skin body portion, and a second flange portion extending inward from the second skin body portion. The second skin body portion has a second tip. A glazing unit has an edge disposed adjacent to and between the first tip and the second tip. The first flange portion and the second flange portion provide an interlocking structure.

Abstract: The invention relates to a tire having a tread of carbon black reinforced rubber composition containing a specialized styrene/butadiene elastomer with molecular weight profile containing a limited low molecular weight content and triglyceride vegetable oil.

Abstract: Provided in the present invention is an outsole formed of a polymer crosslinked product having a JIS A hardness of 90 or less and a tear strength of 40 kgf/cm or more and having a certain relationship between a storage modulus (E23) at 23° C. and 10 Hz and a storage modulus (E160) at 160° C. and 10 Hz, to reduce the weight of a shoe.

Abstract: There is provided a method for producing a recycled material, whereby a recycled material can be efficiently obtained from a tire. The method for producing a recycled material according to the present invention includes a step of subjecting a tire to a gasification treatment to generate a gas containing a C1 gas from the tire, and a step of obtaining a recycled material containing at least one species selected from the group consisting of isoprene, butadiene, a butanediol compound, a butanol compound, a butenal compound, succinic acid, and polymers of these compounds by using the gas containing the C1 gas.

Abstract: Provided is a rubber composition for tires that provides a balanced improvement of wet grip, abrasion resistance, handling stability, and fuel economy during high-speed running, and further has less performance degradation after long-term service. Also provided is a tire including the rubber composition. Included is a rubber composition for tires containing, based on 100% by mass of a rubber component therein: 3-25% by mass of a component derived from an aromatic vinyl monomer; 0-15% by mass of a component derived from a butadiene monomer and having a vinyl configuration; 1-90% by mass of a component derived from a butadiene monomer and having a cis configuration; and 1-6% by mans of a component derived from an isoprene monomer and having a cis configuration, the rubber composition having, after vulcanization, physical properties satisfying the following relationships (1) and (2): ?25° C.<Tg<0° C.??(1); and 65<Hs<75??(2).

Abstract: The invention provides a composition comprising at least one oil, and a first composition comprising the following: A) a first composition A comprising an ethylene/?-olefin/non-conjugated diene interpolymer A, B) an ethylene/?-olefin/non-conjugated diene interpolymer B; and wherein the weight ratio of component A to component B is from 1/1 to 20/1; wherein the Mw of the ethylene/?-olefin/non-conjugated diene B is greater than the Mw of the first composition A; and wherein the composition has a Mooney Viscosity (ML1+4, 100 C) from 20 to 100.

Abstract: Conveyor belts having an outer cover layer, an opposing inner cover layer, and a carcass disposed between the outer and inner cover layers. The outer cover layer includes a sulfur cured rubber formulation formed from a blend including from about 20 phr to about 40 phr of an EPDM elastomer, from about 1 phr to about 40 phr of a polybutadiene rubber, and from about 30 phr to about 80 phr of a natural rubber. The sulfur cured rubber formulation may include a sulfur curative in an amount of from about 1.0 phr to about 4.0 phr. The sulfur cured rubber formulation may exhibits no cracking under dynamic ozone testing conditions of 50 pphm ozone, 25% strain, and 40 deg C., at 168 hours, in accordance with ASTM D1149, and may have a rolling resistance factor value of from 0.05 to 0.06 at a temperature of 25 deg C.

Abstract: A rubber composition, capable of improving both on-ice performance and wear resistance of a tire, contains at least one type of diene polymer, silica, and a resin, wherein: 5 MP?storage elastic modulus (E?) of the rubber composition at ?20° C.?10 MPa; storage elastic modulus (E?) at ?20° C. and loss tangent (tan ?) at ?20° C. of the rubber composition satisfy formula (1) below; and a mass ratio of content (parts by mass) of the silica with respect to content (parts by mass) of the resin, or silica content/resin content, is in the range of 1.00 to 4.00. 0.02×(E??20° C.)+0.25?(tan ??20° C.)?0.65??(1) In the formula, (E??20° C.) represents storage elastic modulus (MPa) of the rubber composition at ?20° C. and (tan ??20° C.) represents loss tangent of the rubber composition at ?20° C.

Abstract: A hydrogenated norbornene-based ring-opening polymer having a syndiotacticity ((racemo diads)/(meso diads+racemo diads)×100) of more than 90% is disclosed. A method for producing the same is also disclosed. It is thus possible to provide a hydrogenated highly syndiotactic norbornene-based ring-opening polymer that is formed of a single material, and exhibits high solvent resistance, and a method for producing the same.

Abstract: An adhesion promoting composition for an anti-corrosion includes about 20% by weight to about 70% by weight of at least one polyolefin selected from polyethylene and/or polypropylene; about 20% by weight to about 65% by weight of at least one butyl rubber; and about 6% by weight to about 35% by weight of at least one elastomer selected from a group comprising ethylene-propylene-rubber and/or ethylene-propylene-diene rubber; each based on the total quantity of the adhesion promoting composition.

Abstract: A conjugated diene polymer having a high content of cis-1,4-structures with a high activity, a conjugated diene polymer and a modified conjugated diene polymer using the same, a rubber composition for a tire, and a rubber composition for a rubber belt. Described are a catalyst for a conjugated diene polymerization including: a non-metallocene type gadolinium compound (A) represented by the general formula (1); an ionic compound (B) formed of a non-coordinating anion and a cation; and an organic metal compound (C) of an element selected from the group consisting of a group 2, a group 12, and a group 13 of the periodic table, a conjugated diene polymer and a modified conjugated diene polymer obtained using the same, a rubber composition for a tire, and a rubber composition for a rubber belt.

Abstract: A natural rubber composition includes a natural rubber, a carbon black filler in an amount of 40 phr based on an amount of the natural rubber, a sulfur crosslinking agent in an amount of 1 phr of based on the amount of the natural rubber, and an accelerator to adjust vulcanization physical properties and a dynamic ratio. The accelerator includes a semi-ultra accelerator in an amount of 0.3 to 1 phr based on the amount of the natural rubber, a delayed accelerator in an amount of 1 to 2 phr based on the amount of the natural rubber, and an ultra accelerator in an amount of 0.3 to 1 phr based on the amount of the natural rubber.

Abstract: The present invention provides a pneumatic tire that achieves a balanced improvement in fuel economy, abrasion resistance, and processability. A pneumatic tire formed from a rubber composition, the rubber composition containing a rubber component including a hydrogenated copolymer and a general purpose rubber, the hydrogenated copolymer containing a structural unit derived from an aromatic vinyl compound and a structural unit derived from a conjugated diene compound, the hydrogenated copolymer having a degree of hydrogenation of the conjugated diene portion of 30 to 100 mol %, a weight average molecular weight of 50,000 to 2,000,000, and a styrene content of 5% to 50% by mass, the general purpose rubber being at least one selected from the group consisting of natural rubber, polyisoprene rubber, styrene-butadiene rubber, and polybutadiene rubber, the rubber component including, based on 100% by mass thereof, 10% to 80% by mass of the hydrogenated copolymer.

Abstract: The present invention provides a rubber composition for a tire having improved workability and abrasion resistance. A rubber composition for a tire according to the present invention comprises: a polybutadiene which has: (A) a Mooney viscosity (ML1+4,100° C.) being 43 or more; (B) a ratio (Tcp/ML1+4,100° C.) of 5 wt % toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4,100° C.) being 0.9 to 2.3; (C) a stress relaxation time (T80) being 10.0 to 40.0 seconds, which is a time until a torque is attenuated by 80% when the torque at the end of ML1+4,100° C. measurement is 100%; and (D) a molecular weight distribution (Mw/Mn) being 2.50 to 4.00; another rubber (ii); and a rubber reinforcing material (iii).

Abstract: A rubber compound comprising a polymer base with a cross-linkable unsaturated chain, a filler and a vulcanization system. The vulcanization system comprises at least sulphur, one or more vulcanization accelerators, and one or more vulcanization activators. The vulcanization system comprises, as a vulcanization activator, a zinc salt of a monocarboxylic acid with general formula (I) HO2C(CH2)mCO(CH2)nCH3??(I) wherein: m is an integer from 0 to 3; n is an integer from 0 to 4.

Abstract: Provided is a method for producing a vulcanized rubber composition, including: a first kneading step of obtaining a kneaded mixture comprising a rubber component comprising at least one selected from the group consisting of natural rubbers and synthetic rubbers, a filler comprising an inorganic filler, and a sulfur-containing silane coupling agent; a second kneading step of adding sulfur and a vulcanization accelerator to the kneaded mixture, followed by kneading, to thereby obtain an unvulcanized rubber composition; and a vulcanization step of vulcanizing the unvulcanized rubber composition to thereby obtain a vulcanized rubber composition having a glass transition temperature of ?30° C. to 0° C. by; wherein specific aminoguanidines are added, followed by kneading, in the first kneading step.

Abstract: The invention relates to a rubber mixture and to a motor vehicle tire. The rubber mixture comprises the following constituents: at least one rubber and at least one reinforcing filler and 0.5 to 10 phr of at least one hydrocarbon wax composition, where the hydrocarbons in the wax composition have 15 to 110 carbon atoms and where: a) 25% to 40% of the hydrocarbons are linear hydrocarbons having 20 to 30 carbon atoms; and where inter alia b) 5% to 18% of the hydrocarbons are linear hydrocarbons having 31 to 38 carbon atoms; and where inter alia c) 25% to 40% of the hydrocarbons are linear hydrocarbons having 39 to 60 carbon atoms, where the percentage in each case is based on the total number of hydrocarbons having 15 to 110 carbon atoms. The motor vehicle tire comprises the rubber mixture at least in an outer component.

Abstract: Provided herein are ionically conductive solid-state compositions that include ionically conductive inorganic particles in a matrix of an organic material. The resulting composite material has high ionic conductivity and mechanical properties that facilitate processing. In particular embodiments, the ionically conductive solid-state compositions are compliant and may be cast as films. In some embodiments of the present invention, solid-state electrolytes including the ionically conductive solid-state compositions are provided. In some embodiments of the present invention, electrodes including the ionically conductive solid-state compositions are provided. The present invention further includes embodiments that are directed to methods of manufacturing the ionically conductive solid-state compositions and batteries incorporating the ionically conductive solid-state compositions.

Abstract: A method for producing a rubber composition containing a rubber wet master batch has a masticating process. The masticating process comprises step 1 of charging the rubber wet master batch into an enclosed kneading chamber that has a stirring rotor showing a rotation speed controllable automatically through a control unit and that is capable of detecting and outputting an internal temperature, step 2 of setting a first control time and a first target temperature in the control unit, and step 3 of stirring the inside of the kneading chamber while making a PID control for adjusting an actually measured temperature in the kneading chamber to the first target temperature through the control unit on the basis of information on the actually measured temperature and the first target temperature, thereby automatically controlling the rotation speed, until the first control time elapses after the completion of the two steps.

Abstract: A rubber mixture and a pneumatic vehicle tire having a rubber mixture containing the following constituents: 15 to 55 phr of at least one natural polyisoprene and/or 15 to 55 phr of at least one synthetic polyisoprene and 15 to 85 phr of at least one polybutadiene and 25 to 55 phr of at least one carbon black and 1 to 10 phr of at least one ozone protection wax, wherein the ozone protection wax contains unbranched hydrocarbons having the following chain length distribution consisting of at least the three ranges A, B and C: range A: hydrocarbons having 26 to 31 carbon atoms, range B: hydrocarbons having 32 to 36 carbon atoms, range C: hydrocarbons having 37 to 47 carbon atoms, wherein the relative proportions of the ranges A to B to C are (0.7-1.5) to 1 to (0.6 - 1.4).

Abstract: A rubber mixture and a pneumatic vehicle tire including a rubber mixture containing the following constituents: 15 to 55 phr of at least one natural polyisoprene and/or 15 to 55 phr of at least one synthetic polyisoprene and 15 to 85 phr of at least one polybutadiene and 60 to 100 phr of at least one carbon black and 1 to 10 phr of at least one anti-ozone wax, wherein the anti-ozone wax contains unbranched hydrocarbons having the following chain length distribution including at least the three ranges A and B and C: range A: hydrocarbons having 26 to 31 carbon atoms, range B: hydrocarbons having 32 to 36 carbon atoms, range C: hydrocarbons having 37 to 47 carbon atoms, wherein the relative mass fractions of the ranges A to B to C are 0.7 to 1.5:1:0.6 to 1.4.

Abstract: A rubber composition for use in tire treads comprises a diene rubber including not less than 40% by weight of a modified conjugated diene polymer rubber and, per 100 parts by weight of the diene rubber, from 66 to 110 parts by weight of a filler. The filler comprises not less than 50% by weight of silica. The modified conjugated diene polymer rubber is obtained by copolymerizing a conjugated diene monomer unit and an aromatic vinyl monomer unit in a hydrocarbon solvent using an organic active metal compound as an initiator. A resulting active conjugated diene polymer chain thereof has a terminal modified group, obtained by reacting at least one type of compound having a functional group that is reactable with the active terminal of the polymer chain. Moreover, the terminal modified group has a functional group that interacts with the silica.

Abstract: Disclosed is an ethylene-propylene copolymer having isotactic polypropylene crystallinity compounded with a halobutyl rubber in an amount effective to improve one or more of aged tensile strength retention, fatigue resistance, and dimensional stability. Also disclosed is an elastomer composition wherein the copolymer can have at least 60 wt % propylene-derived units and at least 6 wt % ethylene-derived units, and a tire inner tube or tire innerliner composition comprising from 1 to 10 phr copolymer. Also disclosed is a vulcanizate of the elastomer composition, and articles, tire innerliners, tires, and tire inner tubes comprising the vulcanizate. Further disclosed are processes for making molded articles, tire inner tubes and tires.

Abstract: A rubber composition comprises a diene rubber including not less than 25% by weight of a modified conjugated diene polymer rubber and, per 100 parts by weight of the diene rubber, from 25 to 65 parts by weight of a filler, the filler comprising not less than 50% by weight of silica. The silica has a DBP absorption number of 190 to 250 ml/100 g, an N2SA of 194 to 225 m/g, and a CTAB of 185 to 215 m2/g. A ratio of the N2SA to the CTAB is from 0.9 to 1.4. The modified conjugated diene polymer rubber has a terminal modified group including a functional group that interacts with the silica. In the modified conjugated diene polymer rubber, aromatic vinyl unit content is from 38% to 48% by weight, vinyl unit content is from 20% to 35%, and weight-average molecular weight is from 600,000 to 1,000,000.

Abstract: The present invention aims to provide a rubber composition for a clinch or chafer which enables to improve the rim chafing resistance, elongation at break, handling stability, and fuel economy in a balanced manner, and to reduce the number of broken spews in tire demolding; and a pneumatic tire produced using the rubber composition. The rubber composition for a clinch or chafer includes 100 parts by mass of a rubber component; 1.2 to 2.9 parts by mass of zinc oxide; and 2.2 to 4.0 parts by mass of stearic acid, the rubber component including 15 to 80% by mass of a butadiene rubber and 15 to 50% by mass of an isoprene-based rubber based on 100% by mass of the rubber component.

Abstract: A multilayer laminated material which comprises at least one layer of glass and which has improved thermal stability is distinguished in that it comprises a lower substrate layer of a plastic, a metal or a combination of plastic and metal, an intermediate layer arranged thereon and comprising a soft material or comprising a thermoplastic, a further fibrous intermediate layer comprising plastic, which is provided with a solvent-free adhesive material, and a top layer of glass. The multilayer laminated material is suitable for the installation of glass elements in the area of the electrical, the electronics and the automotive industry and for other industrial applications.

Abstract: There is disclosed a functionalized elastomer of formula I where R1, R2 and R3 are independently C1 to C8 alkyl or C1 to C8 alkoxy, with the proviso that at least two of R1, R2 and R3 are C1 to C8 alkoxy; R4 is C1 to C8 alkanediyl, C1 to C8 arylene, C1 to C8 alkylarylene, C1 to C8 arylalkanediyl, or a covalent bond; R5 is C2 alkanediyl; Si is silicon; X is sulfur or oxygen; and P is a diene based elastomer, and n is 1 or 2.

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 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: A rubber composition for the manufacture of tires, based on a blend of at least one diene elastomer chosen from natural rubber and synthetic polyisoprene and of one or more diene elastomers chosen from the group consisting of polybutadienes, butadiene copolymers and isoprene copolymers, on one or more reinforcing fillers and on a vulcanization system, the said vulcanization system comprising one or more thiazoline compounds of formula:

Abstract: Provided herein are organic solvent-based processes for the isolation of purified natural rubber from non-Hevea plants. The processes are particularly useful with plant matter that comprises at least 90% by weight roots sourced from Taraxacum kok-saghyz (Russian dandelion), Scorzonera tau-saghyz (Tau-Saghyz), Scorzonera uzbekistanica, and combinations thereof. Also provided herein is a purified non-Hevea rubber product containing 100 phr of rubber sourced from Taraxacum kok-saghyz, Scorzon-era tau-saghyz, Scorzonera uzbekistanica, and combinations thereof, having a specified purity level. Additionally provided are sulfur-vulcanizable rubber compounds and sulfur-vulcanized rubber compounds that incorporate 10-100 phr of purified non-Hevea rubber product sourced from Taraxacum kok-saghyz, Scorzonera tau-saghyz, Scorzonera uzbekistanica, and combinations thereof, having a specified purity level.

Abstract: The present invention provides a rubber composition capable of improving fuel economy and wet grip performance while maintaining good processability, abrasion resistance and handling stability or improving them, as well as a pneumatic tire including the rubber composition. The rubber composition contains carbon black, silica, and a polymer mixture obtained by modifying a polymer derived from a conjugated diene compound and/or an aromatic vinyl compound with a compound containing an ester group and/or a carboxyl group, the polymer mixture having a weight average molecular weight of from 1.0×103 to 1.0×105, the rubber composition having a tan ? peak temperature of ?20° C. or higher, a rubber hardness of from 63 to 75, and a tan ? at 70° C. of from 0.15 to 0.45.

Abstract: Preparation of a rubber composition containing a dispersion of aligned exfoliated graphite platelets. Such rubber composition is prepared by a method comprised of a sequential combination of concentrated solvent or dry masterbatching of elastomer and exfoliated graphite platelets, followed by blending the masterbatch (after removing the solvent from the solvent based masterbatch) with additional elastomer(s) and then followed by processing the resulting rubber composition to align the dispersed exfoliated graphite platelets in a substantially parallel relation to each other. Such processing may comprise as least one of extrusion and calendaring the rubber composition. The invention further relates to a tire containing a component comprised of such rubber composition containing a dispersion of aligned exfoliated graphite platelets prepared by the aforesaid method.

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.

Abstract: The subject invention is directed towards tire components which are comprised of rubber compositions which are comprised of (1) about 2 phr to about 45 phr of a trans-1,4-isoprene-butadiene copolymer which has about 4 weight percent to about 16 weight percent butadiene repeat units and from about 84 weight percent to about 96 weight percent isoprene repeat units, wherein the trans-1,4-isoprene-butadiene copolymer has a Mooney ML 1+4 viscosity which is within the range of about 35 to about 80; and (2) about 55 phr to about 98 phr of at least one other elastomer, preferably a diene based elastomer. The most preferred tire components are those which contain cord reinforcements and require adequate green strength to enhance the tire building and shaping process to maintain cord integrity in the final cured tire.

Abstract: The present invention provides a rubber composition for tires capable of improving handling stability, fuel economy, wet grip performance, elongation at break, and abrasion resistance together while maintaining the balance between them. The present invention also provides a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires containing a diene rubber, silica having a BET specific surface area of 170 to 270 m2/g, sulfur, and a liquid resin having a softening point of ?20 to 45° C., wherein the amount of the liquid resin is 0.5 to 20 parts by mass, and the amount of the silica is 40 to 120 parts by mass, each per 100 parts by mass of the rubber component of the rubber composition.

Abstract: The present invention relates to a copolymer including a monomer unit (a) derived from isoprene and a monomer unit (b) derived from farnesene; a process for producing the copolymer including at least the step of copolymerizing isoprene 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.