Silica Fillers in Tire Compound Development

Thermally conductive adhesive for bonding electronic components that has low viscosity, fast curing speed, low temperature curing, and high thermal conductivity. The adhesive composition contains a silicone resin, silanes, epoxy resin, and fillers like aluminum hydroxide, alumina, and silica. The silanes are organosilanes with specific end group structures. The composition can be a one-component or two-component system. It provides strong adhesion, fast curing, and high thermal conductivity for bonding electronic components at low temperatures without specialized equipment.

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Silica particle with reduced electrostatic charge for preventing static electricity buildup. The silica particle contains a quaternary ammonium salt. The particle size, pore structure, and surface charge are controlled to prevent excessive electrostatic capacitance. The particle size is in the range of 1.0-1.6 um, with a pore size of 2 nm or less accounting for 90-110% of the total pore volume before washing, and 85-200% after washing. The electrostatic capacitance ratio of particles before and after washing is 0.90-1.10. After sintering at 600°C, the pore volume is 5-20 times the pre-sintering value. The controlled particle size, pore structure, and charge prevent excessive electrostatic capacitance and static charge accumulation on the

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Fuel cell system for vehicles and other applications that switches fuel gas supply strategies at startup below freezing to prevent catalyst degradation and component freezing. The fuel cell system has two fuel gas supply methods: direct hydrogen supply and circulating hydrogen supply. The system starts with direct hydrogen supply below freezing to prevent fuel shortage and ice formation. If the fuel tank temperature is below freezing, it switches to circulating hydrogen supply to warm the fuel and prevent freezing. The switch is made when ice accretion reaches a threshold to avoid functional failure. This allows starting the fuel cell below freezing without degradation or failure.

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Anode active material for lithium-ion batteries made from recycled waste glass that contains silica and metal oxides. The material is produced by reducing waste glass at temperatures around 300°C to create silicon particles with a unique bond structure containing metal-oxygen-silicon bonds. This bonding helps prevent the silicon from expanding and delaminating during battery cycling, which is a major issue with pure silicon anodes. The recycled waste glass source also reduces costs and environmental impact compared to high-temperature silicon production methods.

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High-performance organic-inorganic composite solid-state electrolytes (OICSEs) are pivotal for advancing lithium metal batteries (SSLMBs), offering the potential enhanced safety and higher energy density compared to conventional liquid electrolytes. This study systematically explores influence of nanofiller physicochemical properties (particle size, specific surface area, energy) on electrochemical performance polyethylene oxide (PEO)-based OICSEs. By optimizing these parameters, we developed a PEO/superhydrophobic SiO2 OICSE incorporating low nanofillers with an optimized particle size 7 nm high area 300 m2 g-1. engineered demonstrated exceptional ionic conductivity (4.3 10-4 S cm-1 at 30 C), Li-ion transference number (0.5), superior stability (up 5.1 V vs Li+/Li). When integrated into Li|LiFePO4 battery, battery exhibited outstanding rate 5.0 C) remarkable cycling (93.8% capacity retention after 500 cycles C) maintained stable even 0 C. These improvements attributed transport pathways solid/solid interfacial stability. The superhydrophobic presents scalable commercially v... Read More

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Binder composition for rechargeable battery anodes that improves adhesion, coating uniformity, and performance. The binder is a cross-linked polymer obtained by grinding. It contains specific monomers (1,3 butadiene, (hydroxyethyl)methacrylate, trimethylolpropane trimethacrylate) with a particle size range of 180-450 μm. The binder also has a silica anti-caking agent. This composition provides better adhesion to the anode current collector compared to spray-dried binders. It also enables extrusion-based electrode processing for improved anode coating uniformity.

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Battery pack design with reduced components, improved energy density, and enhanced safety for applications like electric vehicles, drones, and portable electronics. The battery pack has a single enclosure that houses the battery cells directly against the inner wall without an intermediate module case. Filler material surrounds the cell sides to prevent electrical shorting and thermal runaway propagation. This simplifies the pack structure, reduces cost, and increases energy density compared to separate cell and pack housings. The filler also blocks heat transfer between cells to mitigate thermal runaway chain reactions.

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Method to increase the bulk density of low bulk density materials like fumed silica without forming agglomerates, grit, or altering absorption properties. The method involves gently mixing the low bulk density material with a liquid, like water or acid, to create a homogenous, densified material that retains its powdery form and dispersibility. The liquid is evaporated to leave behind the denser product. This avoids issues like over-densification, agglomeration, and reduced dispersion when using mechanical methods.

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Controlling the morphology of precipitated silica by using polycation-polyanion phase separation. The process involves mixing oppositely charged polymer ions with silicon sources to induce silicification. The polymer dense phase formed by phase separation provides a distinct environment for silica precipitation. This enables regulating the silica morphology by tuning the polymer concentration and ionic strength.

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Rubber compositions for vehicle tires that balance wet performance, rolling resistance, and wear resistance. The compositions contain a filler system with two different silicas. One is a surface-functionalized silica with specific surface areas of 250-310 m2/g and 230-285 m2/g. The other is an unfunctionalized silica with specific surface areas of 60-120 m2/g and 55-105 m2/g. This blend of silicas improves wet grip, rolling resistance, and wear resistance compared to similar filler systems using only one type of silica.

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Rubber mixture for tire treads with improved properties like rolling resistance, grip, and tear resistance. The mixture contains a specific type of styrene-butadiene rubber (SSBR) with a glass transition temperature between -35°C and -85°C. This rubber is combined with silica filler and a specific amount of a silane. The silane has a formula with a thioacetate or thiopropyl group (X) bonded to a silicon atom (Si) and a propyl group (R) with a siloxane (S) bond between them. The silane amount is 1-30 parts per hundred parts of rubber (phr). The mixture can be used in tire treads for vehicles to provide better balance of properties like rolling resistance, grip, and tear resistance compared to conventional tire tread compositions.

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Rubber composition for tires that provides improved rolling resistance, wet grip, and handling compared to conventional tire rubbers. The composition uses a blend of natural rubber, polybutadiene rubber, and two different solution-polymerized styrene-butadiene rubbers with specific glass transition temperatures. It also contains two silicas with different surface areas, along with coupling agents. The composition enables optimizing winter performance without sacrificing rolling resistance, by balancing silica-filler interactions and silanization. The cross-linkable composition can be used in tire treads, and the cross-linked tire has improved properties like rolling resistance, wet grip, and handling.

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Tire rubber composition for improved wet grip and fuel efficiency. It contains a specific combination of rubber components, hydrogenated resin, silica, and carbon black. The rubber components are isoprene-based and modified styrene-butadiene rubber with high styrene content (30% or more). The hydrogenated resin has a high softening point (100°C or above) and moderate molecular weight (1200-1600 g/mol). The silica loading is 50-100% of the total filler content. This composition balance provides optimal wet grip and rolling resistance.

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Rubber composition for tire treads that provides a balance of low rolling resistance, good wet traction, and wear resistance. The composition contains specific diene rubber, silica, a silane coupling agent, a fatty acid metal salt, and an alkylsilane. The diene rubber has a high percentage of a specific conjugated diene rubber formed by reacting a siloxane with a diene-based polymer. This improves silica dispersion for rolling resistance. The alkylsilane plasticizer suppresses silica aggregation. The fatty acid salt further aids silica dispersion. The blend ratio of these components provides a balance of rolling resistance, wet traction, and wear resistance.

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Rubber compound for tire treads that improves wet grip, rolling resistance, and profile stiffness. The compound contains a functionalized butadiene rubber, a liquid-modified diene polymer, a polar filler like silica, and a diene rubber. The functionalized butadiene rubber interacts with the polar filler. The modified diene polymer has a backbone modification that also allows interaction with the polar filler. This filler-rubber interaction improves wet grip and rolling resistance while maintaining stiffness.

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Tire rubber composition that provides improved wet grip and fuel efficiency. The composition contains an isoprene skeleton rubber, a modified styrene-butadiene rubber with 15% or less bound styrene, hydrogenated resin with a softening point over 100°C and Mw of 1200-1600, silica with 50-100% filler content, and carbon black. This balance of components enables optimized wet traction and reduced rolling resistance.

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Rubber composition for tires that balances wet grip, fuel efficiency, and wear resistance. The composition contains a styrene-butadiene rubber (A) with a modified terminal group, and an unmodified styrene-butadiene rubber (B) with a higher glass transition temperature. The modified rubber (A) is produced by modifying an active polymer with a compound containing a silicon atom bonded to an amine group. This improves dispersion of fillers like silica for better wet grip and wear resistance. The unmodified rubber (B) provides the balance of fuel efficiency.

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Rubber composition for tires with improved steering stability, wet performance, and low rolling resistance over a wide temperature range. The composition contains specific amounts of modified styrene-butadiene rubber, silica, thermoplastic resin, and a silane coupling agent. The modified styrene-butadiene rubber has a vinyl content of 9-45 mol% and a glass transition temperature of -45°C or lower, with terminal groups containing siloxane or amine functionalities. The composition also has silica, thermoplastic resin, and a silane coupling agent in specific ranges.

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Rubber composition for tire treads that provides improved wet grip and rolling resistance compared to conventional tire rubber compositions. The composition contains a diene elastomer, a high surface area silica (Tl > 100 m2/g) as the main reinforcing filler, a microsilica (T2 < 50 m2/g) as a secondary filler, a silane coupling agent, and a crosslinking system. The microsilica in addition to the high surface area silica enhances wet grip and reduces rolling resistance compared to using just the high surface area silica.

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Low-rolling-resistance high-wear resistance tire tread rubber composition that can improve the dispersion of white carbon black in tread rubber and the processability of rubber materials by using white carbon black and silica fume as fillers and selecting a silane coupling agent capable of mixing at high temperature. The composition includes carbon black and white carbon black as fillers, and selecting a silane coupling agent capable of mixing at high temperature.

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Pneumatic tire with improved durability and wear resistance by using a specific silane coupling agent in the tread rubber. The coupling agent is represented by a formula with a specific alkyl group, alkoxy group, and substitution on the silicon atom. This coupling agent provides enhanced durability and wear resistance when used in tire tread rubber containing silica as a reinforcing filler. The formula is: (R1)3Si(OR3)x, where R1 is an alkyl group with 5 to 20 carbon atoms, n is 1 to 3, and x is 1 to 5.

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Rubber composition that is excellent in wet grip performance and low rolling resistance. The composition includes an isoprene skeleton rubber and a styrene-butadiene rubber, the filler contains at least silica, the silane coupling agent has a thiol group, the content of the silane coupling agent is 1 part by mass or more and 10.5 parts by mass or less with respect to 100 parts by mass of the rubber component, and the content of the fatty acid metal salt is 0.1 part by mass with respect to 100 parts by mass of the rubber component.

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Tire tread composition with improved properties like reduced rolling resistance, stiffness, and tear without compromising other performance metrics like traction, wear, and tensile strength. The composition uses a specific combination of silane coupling agents along with a diene rubber and silica filler. The silane agents include bis(dialkylalkoxysilyl-alkyl) polysulfide coupling agents. The agents improve silica dispersion and compatibility in the rubber matrix. This leads to better processing, reduced agglomeration, and enhanced rubber properties like hysteresis and stiffness without impacting tear and strength.

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Rubber composition for tire treads that improves wet grip and processing while maintaining rolling resistance. The composition contains specific fillers like silica, white carbon black, and silane coupling agent along with other components like butadiene and styrene-butadiene rubbers. The white carbon black R300 improves dispersibility and processing when using high filler loadings like over 60 parts by weight of silica. This allows better wet grip without sacrificing rolling resistance.

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Rubber composition for heavy duty tires with improved wear resistance, fuel efficiency, processability, and tensile strength compared to conventional rubber compositions. The composition contains 60-85% isoprene rubber, 15-40% modified styrene-butadiene rubber with a glass transition temperature below -50°C, and 40 parts or more of silica per 100 parts diene rubber. The isoprene rubber provides wear resistance, the modified styrene-butadiene rubber improves low rolling resistance, and the high silica content enhances wear resistance.

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Tire rubber composition that provides improved fuel efficiency, breaking strength, and abrasion resistance in tires while also having good moldability and vulcanization speed. The composition contains an aminoguanidine weak acid salt like aminoguanidine bicarbonate or aminoguanidine phosphate. This salt improves properties like fuel efficiency when combined with specific amounts of particulate silica. It allows using higher silica loading without delaying vulcanization or degrading dispersion. The composition may also have additional components like styrene-butadiene rubber and plasticizers.

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Tire rubber composition for improved fuel efficiency and moldability, containing a large amount of silica in the rubber compound, along with an aminoguanidine weak acid salt. This composition provides better fuel efficiency, breaking strength, moldability, and vulcanization speed compared to traditional silica-filled tire rubbers. The aminoguanidine salt improves dispersion of the silica and reduces scorch time. The composition contains 100 parts rubber, 80 parts silica, and 0.01-10 parts aminoguanidine salt.

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Rubber composition for tire treads that improves rolling resistance by promoting bonding between silica and the rubber matrix and preventing silica reagglomeration. The composition contains a compound formed through hydrolysis between the silica and rubber during processing. This compound helps the silica disperse properly in the rubber instead of clumping. It allows better silica utilization and rolling resistance compared to regular silica-reinforced tire treads.

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Pneumatic tire with improved durability and abrasion resistance. The tire rubber composition contains silica as a reinforcing filler and a mercapto silane coupling agent. The mercapto silane improves the crosslinking density of the rubber and provides better durability and abrasion resistance compared to conventional silica-reinforced tires. The mercapto group in the silane reacts well with the polymer matrix and enhances the bonding between the silica and polymer. This improves the reinforcing properties and prevents separation between the silica and polymer. The mercapto silane also has lower scorch time compared to other silanes, allowing better processing.

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Rubber composition that reduces rolling resistance while maintaining the grip properties of the resulting rubber composition on wet road surfaces. The composition includes a rubber component, a white filler containing silica, a silane coupling agent, and a compound such as monoalkanolamide in order to improve the dispersibility of silica in the rubber composition.

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Rubber composition for tires that can be used for heavy loads or construction vehicles. The composition contains specific amounts of natural rubber, silica and a silane coupling agent and a specific amount of an acetylenic compound having a specific structure.

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Rubber composition for tire treads with improved wet grip and a pneumatic tire using this composition. The composition contains styrene-butadiene rubber, particulate silica, and a specific silane coupling agent with a sulfur-containing alkoxysilyl group. The coupling agent has a sulfur:silicon ratio of 1:1-1.2 and a carbon count of 6 or more between the alkoxysilyl group and sulfur atom. This composition provides significantly improved wet grip performance in tires while maintaining other properties like fuel efficiency and wear resistance.

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Vulcanizable rubber compositions for tire treads that replace traditional silane coupling agents for reinforcing silica fillers. The compositions have silica particles coated with chains of partially epoxidized oligomers directly bonded to the surface. The coating is formed by reacting the epoxidized oligomer with the silica in the solid state without solvents. This eliminates the need for silanes to improve silica-rubber interaction. The epoxidized oligomer chains provide chemical bonding to the silica without requiring additional functional groups like silanes.

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Rubber composition for a tire which improves the overall performance of fuel consumption and chipping resistance at high speed. The composition includes isoprene-based rubber, butadiene rubber and styrene-butadiene rubber, silica, and a silane coupling agent.

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Rubber composition for a tire and a winter tire having excellent overall performance of high-speed turning performance on ice and high-speed turning performance on ice after aging. The composition includes an isoprene-based rubber and a butadiene rubber, a filler containing silica, and a silane coupling agent.

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Rubber composition for tires that balances steering stability and wet grip performance. The composition contains silica and a water-soluble inorganic filler with whisker structure. The silica-to-whisker filler ratio is 2.5 to 40. This combination improves elastic modulus for steering stability without degrading wet grip. The tires made with this composition have better steering and wet traction compared to tires using just silica or just the whisker filler.

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A rubber composition for tire treads that improves wet grip performance by increasing surface roughness and friction on wet roads. The composition contains fumed silica that doesn't interact with the rubber. The fumed silica is added in an amount of 50-120 parts per hundred parts (phr) of rubber, along with other components like styrene-butadiene rubber, silica, coupling agent, zinc oxide, oil, accelerator, and sulfur. The fumed silica boosts wet grip by increasing surface roughness and friction on wet roads.

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Rubber composition for tires that balances wet skid performance and steering stability. The composition contains both silica and aluminum hydroxide fillers. The silica has a specific CTAB and BET surface area of at least 180 m2/g and 185 m2/g, respectively. The aluminum hydroxide has an average particle size of 10 microns or less. This combination improves both initial wet skid and long-term steering stability compared to using silica alone.

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Rubber composition for tire treads with improved workability, tensile strength, and rolling performance. The composition contains a conjugated diene rubber, silica, silane coupling agent, and a specific nonionic surfactant. The silica content is 30 parts by mass or more relative to the conjugated diene rubber. The silane coupling agent is 3-30% by mass relative to the silica. The nonionic surfactant is 0.1-15% by mass relative to the silica. The surfactant has polypropylene oxyblock and polyethylene oxyblock segments. This composition provides better processing, tensile strength, and rolling performance compared to similar compositions without the specific surfactant. The surfactant entangles with the conjugated diene rubber, reducing aggregation between silica particles.

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Rubber composition for tires with improved processability and reduced curing time when using prehydrophobic silica as filler. The composition contains diene-based elastomers with functional groups reactive with hydroxyl groups in the prehydrophobic silica, along with a zinc salt of fatty acid soap. This counterbalances the increased cure rate from the prehydrophobic silica and allows lower zinc oxide content. The functionalized elastomers have groups like amine, thiol, and siloxy. The soap prevents curing promotion from the silica and reduces zinc oxide addition.

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Elastomeric tire compositions with improved properties like tear resistance and abrasion resistance, particularly for tire treads, using specific silicas derived from rice husk ash. The silicas have high surface areas above 190 m2/g, but also low salt content. These silicas disperse well in the elastomer matrix without needing pre-treatment or higher filler loading. The composition involves a diene elastomer like natural rubber, silica, and other typical tire components.

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Rubber composition for tires that improves dispersion of silica filler in the rubber matrix while maintaining good low heat generation and elongation at break. The composition includes silica, a tetrazine compound, zinc or a zinc compound, and optionally a silane coupling agent. The tetrazine compound and zinc ratios are specified. The tetrazine compound improves silica dispersion, and zinc helps with low heat generation. The composition is suitable for tire treads.

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A rubber composition for tires with improved dispersibility of silica, low heat generation, and high breaking strength. The composition contains 30 parts silica, 0.7-5 parts of a specific tetrazine compound, and zinc or a zinc compound. Blending silica, the tetrazine compound, diene rubber, and zinc in specific steps improves silica dispersion, lowers heat generation, and maintains elongation compared to conventional methods.

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A filled rubber composition for tires with improved wet grip and skid resistance, and reduced sulfur content. The composition uses multiple silane coupling agents on the silica filler instead of just one. This allows simultaneous attachment of different silanes to different silica sites. The resulting filled rubber has better properties like resilience and grip performance compared to using just one silane. The reduced sulfur content comes from using multiple silanes instead of just one, as sulfur can interfere with silane bonding.

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Rubber composition for tires that provides low rolling resistance and high wear resistance. The composition contains natural rubber, solution polymerized styrene butadiene rubber, butadiene rubber, high specific surface area silica, mercaptosilane coupling agent, reinforcing agent (carbon black), accelerator, antioxidant, and sulfur. The specific surface area of the silica is 175-230 m2/g. The mercaptosilane coupling agent improves silica dispersion and compatibility with the rubber matrix, reducing rolling resistance. The high specific surface area silica and reinforcing agent provide wear resistance.

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Rubber composition for tire treads containing highly dispersed nano-silica for improved wet grip and rolling resistance. The composition uses a unique modification technique to disperse nano-silica in the rubber matrix without using surfactants or coupling agents. The nano-silica is modified with a phthalate diester compound that anchors to the silica surface. This is followed by grafting a styrene-butadiene rubber with unsaturated acrylate. The anchor points on the silica and modified rubber attract each other, forming a coating layer that stabilizes the silica dispersion without separating. The coating layer improves compatibility between the silica and rubber matrix, providing better wet grip and rolling resistance.

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Rubber composition for tires that improves on-ice performance, fuel efficiency, and wear resistance in a well-balanced manner. The composition contains a tetrazine compound, a low molecular weight diene polymer, and silica. The tetrazine compound reacts with the diene rubber to increase its side chains, improving affinity with silica. The low molecular weight diene polymer further widens the rubber chain spacing. This synergistic effect of tetrazine, diene, silica, and low molecular weight diene polymer enables better on-ice traction, low rolling resistance, and wear resistance in tires.

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Rubber composition for tire treads with improved performance from reinforcement fillers like silica without degrading polymer properties. The composition uses a surface modification process aid that binds to the reinforcement filler surface. This prevents agglomeration of the filler and enables better dispersion and long-term storage stability. The process aid modifies the filler surface at a weight ratio of 0.005 to 0.15 parts per 100 parts filler. It has a specific chemical structure with ethoxy groups. The modification amount is 0.25 to 18 parts per 100 parts rubber. This allows controlling the surface treatment based on filler surface area.

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Rubber composition for tire treads that provides excellent wet grip, rolling resistance, and processability. The composition contains a specific conjugated diene rubber, silica, and a silane coupling agent. The specific conjugated diene rubber is made by polymerizing conjugated dienes with siloxane units. This rubber structure is compatible with silica and prevents agglomeration. The silica content is high, but the silane coupling agent is limited to 3-40% to balance silica dispersion.

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A rubber composition for tire treads that provides improved rolling resistance, wear resistance, and break elongation when used in tires. The composition contains a specific conjugated diene rubber, natural rubber, silica, and a silane coupling agent. The conjugated diene rubber is made using a special synthesis process. The silica content is high, at least 30 parts by mass relative to the diene rubber. This composition allows tires made with it to have better rolling performance, wear resistance, and break elongation compared to traditional rubber compounds.

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