Reduce Tire Road Wear Emissions

A diene rubber composition for tire applications with improved low rolling resistance, wear resistance, and wet grip compared to conventional diene rubbers. The composition involves modifying two different diene rubbers with specific silicon compounds, then hydrolyzing and drying them. One diene rubber is modified with a silicon compound represented by formula (1) and/or (2). The other diene rubber is modified with the same silicon compounds. This modified rubber composition, when blended with silica and carbon black, provides better low rolling resistance, wear resistance, and wet grip compared to conventional diene rubbers. The composition also has good workability and processability. The silicon compound modifications create specific branching structures on the rubber chains that enhance silica interaction and performance.

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ABSTRACT Significant advancements in developing highperformance, sustainable tyre tread compounds have been achieved through the strategic integration of modified silica into carbon black (CB)/thermally exfoliated graphite hybrid filler systems. While benefits fillers such as CB, graphite, and are recognized, limited understanding their interaction mechanisms with polymer chains has hindered widespread adoption. This study investigates mechanical, thermal, dynamic mechanical properties an ecofriendly, green compound, focusing on both binary (CB/silica) ternary (CB, graphite/modified silica) The key aspect this research is utilization prepared by latex imprinting technique along epoxidized natural rubber (ENR) a compatibilizer to enhance between NR matrix. partial replacement CB thermally novel lateximprinted enhanced surface area provides excellent properties, low rolling resistance, improved wet grip, reduced heat buildup. porosity silica, coupled system, play crucial role reducing hysteresis, resulting resistance (0.0376), grip (0.0796), very buildup (13C). attribu... Read More

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Retreading is a cornerstone in the remanufacturing process of tires, facilitating extraction maximum kilometers (Km) from tire carcass. Tire plays crucial role conserving raw materials, reducing environmental impacts, and lowering overall operating costs. This study employs predictive modeling techniques to forecast performance optimize resource allocation, departing traditional approaches, for bus transport system India. Machine learning models, including linear regression, ensemble boosted trees, neural network were used. Two scenarios devised: Scenario I addressed premature failures optimizing reduce procurement II used targeted interventions, such as eliminating new condemnations retread (RT) strategies, could potentially salvage 169 tires retirement. The results achieved R2 values 0.44, 0.51, 0.45 improved test datasets 0.46, 0.52 0.44. By leveraging these decision-makers can substantially improve mileage, condemnations, increase production, drive cost savings fleet operations. Notably, this approach contributes enhanced operational efficiency promotes sustainability by cutting ... Read More

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A braking control system for vehicles with regenerative braking and friction braking that balances tire wear and fuel efficiency. The system dynamically distributes braking force between regenerative and friction brakes based on factors like tire temperature and road conditions. During braking, if the front wheel temperature exceeds a threshold, it reduces the amount of regenerative braking and increases friction braking to prevent excessive tire wear. This avoids concentration of forces on the wheels that can cause accelerated wear and dust generation. The system also recommends routes with lower braking requirements to further mitigate tire wear.

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Using carbon nanotubes called Molecular Rebar in rubber compounds to improve tire durability and reduce environmental impact. The carbon nanotubes bind with the polymer matrix, improving wear resistance without detrimentally affecting rolling resistance, and reducing overall environmental concern over antiozonants in the tire. The nanotubes halt microcracks that form from ozone exposure, allowing use of less antizoonant or safer alternatives without increased tire failure. The nanotubes also slow antizoonant migration from the rubber.

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Optimizing control signals used in operating a vehicle to improve performance, efficiency, and wear while balancing conflicting objectives. The optimization involves iteratively replacing optimal values of individual control signals in sequences while measuring associated parameters. Confidence intervals are calculated to determine causal relationships between control signals and parameters. This allows identifying the best control signals for desired parameter values. By using these optimized signals, the vehicle can be operated to causally affect parameters. The iterative replacement and parameter measurement process is repeated to further refine the control signals.

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Tire-road wear results in particulate emission, which can either accumulate at the contact interface or be released into environment. While previous research has focused on collection and characterization of Tire-Road Wear Particles (TRWP), offering valuable insights their properties, less is known about tribological mechanisms governing TRWP generation subsequent modifications to tire-road conditions. A novel methodology introduced that integrates laboratory testing with particle analyze dynamics generation. pin-on-disc tribometer, housed an isolated chamber, was used replicate conditions a reduced scale. An Electrical Low Pressure Impactor (ELPI) system collect characterize airborne particles generated during testing. The findings provide important relationship between corresponding emissions. Results are presented terms evolution coefficient friction, morphology, number concentration. morphology evolves throughout test, increasing from approximately 50 m initial stage 500 later stages. concentration 0.64 size range decreases significantly, 1.9 particles/cm 0.08 stage, repre... Read More

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Tyres for vehicles with improved grip, wear resistance, and low weight. The tyres contain a rubber matrix with functionalized carbon nanoparticles like graphene and carbon nanotubes. The functionalization improves dispersion of the carbon nanoparticles in the rubber. This provides better grip, structural and chemical properties, and abrasion resistance compared to unfunctionalized carbon nanoparticles. The functionalization involves treating the carbon nanoparticles with chemicals like nitric acid to modify their surface.

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A system for optimizing tire inflation by calculating personalized target pressures based on factors beyond just the default value. The system involves vehicles calculating profile-based target pressures for tires using data like tire make, history, vehicle use, and environment. The target pressures are then wirelessly transmitted to devices like tire fillers or user devices to inflate the tires to the calculated optimal pressures. This customized tire pressure management goes beyond just default values to provide better tire performance and longevity.

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Additive composition for improving properties of silica-filled rubber compounds in tires, such as fuel economy, traction, and wear resistance. The composition comprises a reaction product of fatty acid and polyamine. It is added to silica-filled rubber compounds, like tire treads, at low parts per hundred (phr) levels. The additive enhances silica dispersion and reduces payne effect, without affecting key rubber properties like viscosity, scorch, hardness, tensile strength, elongation, abrasion, and modulus. This enables improved tire performance, including lower rolling resistance, enhanced winter/dry traction, and better dry handling, without compromising other properties.

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Rubber composition for truck tires with improved rolling resistance and wet grip while maintaining wear resistance. The composition contains 70-95 phr of polyisoprene and 5-30 phr of a low Tg SBR functionalized for silica coupling. It also has 40-80 phr of predominantly silica filler. This combination provides a balance of wear, wet, and rolling resistance properties for reduced environmental impact and safety in truck tires.

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<div class="section abstract"><div class="htmlview paragraph">As global warming and environmental problems are becoming more serious, tires required to achieve a high level of performance trade-offs, such as low rolling resistance, wet braking performance, driving stability, ride comfort, while minimizing wear, noise, weight. However, predicting tire wear life, which is influenced by both vehicle characteristics, technically challenging so practical prediction method has long been awaited.</div><div paragraph">Therefore, we propose an experimental-based life using measured characteristics the volume formula polymer materials. This achieves accuracy for use in early stages development without need time-consuming costly real tests. improved quietness compliance with dust regulations due electrification requires accuracy, leading increase cases requiring judgment through tests.</div><div paragraph">To address this technical issue, our new model introduces characteristic factors that affect specifically toe angle camber suspension alignment. Furthermor... Read More

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Rubber composition manufacturing method, tire manufacturing method, and rubber composition manufacturing apparatus that improve wear resistance and reduce heat generation in tires. The rubber composition is made by kneading a rubber component, silica, and a silane coupling agent in two chambers with rotors. Compressed gas is delivered to the second chamber during kneading. This allows better dispersion of silica without flocculation. It also reduces heat buildup during kneading. The compressed gas is delivered through a hole in the second chamber wall.

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Rubber composition for tire treads that improves wear resistance. The composition contains modified and unmodified butadiene rubbers in specific proportions along with carbon black with specific physical properties. The modified butadiene rubber content is 5% or more and the unmodified butadiene rubber content is 10% or more. The carbon black has a cetyltrimethylammonium bromide adsorption specific surface area (CTAB) of 130 m2/g or more, a CTAB/iodine adsorption ratio of 0.92 to 1.06, and a hydrogen release amount of 3,500 to 4,800 mass ppm. Using this composition in tire treads provides improved wear resistance compared to conventional tread rubber compositions.

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Rubber composition that improves wear resistance and chipping resistance. The composition includes silica and zinc oxide, which have a specific relationship between CTAB specific surface area and DBP oil absorption, into rubber including isoprene rubber.

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Wear-resistant tire rubber compound composition and preparation method that improves tire wear resistance by optimizing silica dispersion and rubber-silica interface adhesion. The method involves two-step modification of silica using a silane coupling agent and an active dispersant. The silane is dry-mixed with silica, heated to adsorb and hydrolyze, and the dispersant promotes uniform grafting. This reduces silica agglomeration, improves dispersion, and enhances rubber-silica bonding for better wear resistance.

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Rubber composition and tire design to reduce wear during low-speed applications like stop-and-go driving. The rubber composition contains a specific blend of isoprene, butadiene, and styrene-butadiene rubbers, along with a filler mix of fine carbon black and silica. The carbon black has an average particle size of 19 nm or less. This composition provides improved wear resistance when a high contact force is applied for long times at low speeds. The tire design incorporates this rubber compound into the tread layers. It includes a top layer with the specific rubber blend, sandwiched between inner layers. This configuration helps prevent premature wear during stop-and-go driving conditions.

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A tire with improved wear resistance at high speeds. The tire has a specific composition for the tread rubber, with controlled amounts of polymer and ash, along with a maximum thickness on the equatorial plane. The polymer content (PC) is 55% by mass, the ash content (Ash) is 25% by mass, and the equatorial plane thickness (G) is 10 mm or less. This combination improves wear resistance during high-speed running compared to conventional tires.

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A dry mixing method for tire rubber compositions with reduced rolling resistance and improved wear resistance. The method involves pre-dispersing white carbon black before adding it to the rubber. This improves white carbon black dispersion and modification by pre-processing. It can be mixed with carbon black masterbatch to reduce hysteresis loss. Using pre-dispersed white carbon black in tire tread rubber reduces rolling resistance while maintaining wear resistance.

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Heavy duty pneumatic tire with improved wear resistance for trucks and buses. The tire has a tread made with a specific rubber composition containing carbon black with high surface area, small particle size, and specific additives. The rubber composition has a carbon black with an average particle size of 20 nm or less and a cetyltrimethylammonium bromide (CTAB) adsorption specific surface area of 100 m2/g or more. It also has a land ratio of 81% or more in the tread. This composition helps achieve a wear resistance figure of merit of 140 or more. The tire provides better wear life compared to conventional heavy duty tires.

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Tire with improved wear resistance and adhesion compared to conventional tires. The tire has a tread with hard granules embedded in the wear surface. The granules are treated with low-temperature plasma to enhance adhesion to the tread. An adhesive is applied to the tread strip before the granules are added. This sequence of treating the granules, applying adhesive, and embedding them improves adhesion compared to adding granules directly to the tread.

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Rubber composition for engineering tire treads that improves tire durability and reduces wear compared to conventional rubber compounds. The composition contains specific additives like carbon black, silicon, modified resin, and a fatty acid salt compound. The additive combination provides better properties like stiffness, abrasion resistance, dispersion, and tear strength compared to standard tire rubber.

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White carbon black filled tread rubber composition for tires that provides wear resistance comparable to carbon black filler while improving wet grip and rolling resistance. The composition uses a combination of emulsion polystyrene-butadiene rubbers, solution polystyrene-butadiene rubbers, polybutadiene rubber, white carbon black, silane coupling agents, and other standard rubber ingredients. The mixing method involves blending the components in a specific sequence and order to optimize dispersion and compounding. The resulting white carbon black filled tread rubber provides superior wear resistance compared to traditional carbon black filled tires, while also improving wet grip and rolling resistance.

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Tire for a vehicle that reduces fine dust emissions from vehicles with tires. The tire is manufactured of a tire matrix with a branched microstructure with microcracks and / or is interspersed with fibers with a diameter between one nanometer and one hundred micrometers, the fibers being a have higher abrasion resistance than the tire matrix, so that even when the fibers and the tire matrix wear off, the fibers protrude from the tire matrix and are in contact with the road surface when the tire rolls, and / or where to reduce the emission of fine dust from the tire and to reduce Existing fine dust on the roadway.

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A wear-resistant tire rubber composition that improves tire durability and extends service life. The composition contains natural rubber, styrene-butadiene rubber, carbon black, modified silicon carbide, sulfur, accelerator, zinc oxide, stearic acid, antioxidant, and paraffin wax. The modified silicon carbide is prepared by dispersing silicon carbide in water, adding dopamine, adjusting pH, and freeze drying or spray drying. The modified silicon carbide replaces some carbon black, provides higher wear resistance, and reduces rolling resistance. The modified silicon carbide also has improved compatibility with the rubber matrix due to a thin surface coating layer.

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Rubber composition for tires with improved wear resistance. The composition contains specific materials and ratios to achieve better wear performance. It has a rubber component, a thermoplastic elastomer with non-conjugated olefin units, and a plasticizer. The rubber component has aromatic vinyl units and the thermoplastic elastomer has fewer aromatic vinyl units. The ratio of aromatic vinyl units in the rubber vs. the thermoplastic elastomer is greater. This separation of aromatic vinyl groups reduces stress concentration and improves wear. The composition also has silica loading of 180 m2/g or higher for better wear. The plasticizer content exceeds the thermoplastic elastomer content. This promotes silica dispersion and further enhances wear resistance.

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High-wear-resistance tread rubber for all-steel truck radial tires that provides improved wear resistance without compromising other tire properties like puncture resistance and chipping resistance. The tread formula uses a specific combination of rubber components to achieve this. It includes cis-1,4-polyisoprene rubber, cis-butadiene rubber with high cis content, carbon nanotubes or a pre-dispersed masterbatch of carbon nanotubes and cis-butadiene rubber, and ultra-abrasion-resistant carbon black with high specific surface area. This composition balances wear resistance with other tire properties like puncture resistance and chipping resistance.

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An environmentally friendly wear-resistant tire using recycled tires as the main material. The tire has an outer tread that contacts the road and an inner tread bonded to the outer tread. The inner tread is made from recycled tires. The inner tread helps reinforce the outer tread for improved wear resistance while utilizing waste material.

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Rubber composition for tire treads with improved wear resistance and lower rolling resistance. The composition contains modified nano-silica dispersed in styrene-butadiene rubber latex. The modified nano-silica is prepared by in-situ polymerization using unsaturated acid-based monomers and conjugated diene monomers. This prevents agglomeration of the nano-silica particles and provides better dispersion in the rubber matrix. The modified nano-silica enhances wear resistance while the styrene-butadiene latex reduces rolling resistance.

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Rubber composition for tire treads that improves elasticity, cut resistance, fracture resistance, and wear resistance in a balanced manner while reducing rolling resistance. The composition contains natural rubber, polyisoprene, and optionally polybutadiene rubber as the base. It also has an inorganic filler with specific properties like a repose angle of 40 degrees or more, BET surface area of 10 m2/g or more, and DBP absorption of 2.0 or more. This filler combination improves elasticity, cut/chipping resistance, fracture resistance, and wear resistance of the vulcanized rubber in a well-balanced manner, while reducing heat generation. The composition can further contain reinforcing fillers, vulcanization agents, etc.

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Rubber compositions for filling tire tread cavities that prevent cracking and premature wear. The compositions have a unique combination of high and low Tg diene elastomers along with a high loading of reinforcing filler and a lower loading of non-reinforcing filler. This allows the compositions to fill cavities without cracking or premature wear when the tire rolls. The high Tg elastomer provides reinforcement while the low Tg elastomer maintains flexibility. The high reinforcing filler load compensates for the reduced reinforcement from the lower filler load.

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Rubber composition for tire treads that provides high resistance, good wear, and low rolling resistance for fuel efficiency in all-steel tires. The composition contains natural rubber, synthetic rubber, and carbon black with specific surface area properties. The carbon black has a high surface area and small pore diameter. The carbon black specific surface area measured by mercury injection is at least 0.8 times the specific surface area measured by CTAB. This composition provides long tire life, low rolling resistance, and good wear in all-steel tire applications.

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Rubber composition for tire treads that improves grip and wear resistance while using less petroleum-derived materials. The composition contains zinc oxide particles with an average size of 200 nm or less. This reduces the amount of larger zinc oxide particles typically used as a vulcanization accelerator. The smaller particles improve grip and wear compared to larger zinc oxide. The composition also contains deproteinized natural rubber, epoxidized natural rubber, and silica filler. This allows replacing some conventional petroleum-based rubber components with renewable and recyclable materials.

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Rubber composition for tire treads that provides improved wear resistance without deteriorating rolling resistance. The composition contains a diene-based rubber, carbon black with specific properties, and conventional fillers. The carbon black satisfies a relationship between pore volume, oil absorption, and surface area. This allows improving wear resistance without increasing rolling resistance compared to conventional carbon blacks. The composition can be used in tire treads to provide better wear performance without sacrificing rolling efficiency.

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Rubber composition for heavy duty tires with improved wear resistance without impairing low heat buildup. The composition contains specific amounts of a modified natural rubber, carbon black, and silica filler. The modified natural rubber has a polar group content in the range of 0.001 to 0.5 mmol/g. The composition also has a tan delta value at 25°C below 166 and a glass transition temperature below -50°C. These properties optimize low rolling resistance and wear.

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Rubber composition for tire treads that improves wear resistance and lowers heat generation in heavy-duty tires without sacrificing cut and chip resistance. The composition uses a specific type of carbon black with a high structure and surface activity balance. The carbon black has a compressed dibutyl phthalate oil absorption (24M4DBP) of 105-115 ml/100g, indicating a high structure, and a nitrogen adsorption surface area (SA) and pore volume (IA) ratio of 1.25-1.30. This carbon black improves wear resistance and heat generation without negatively impacting properties like workability, cut resistance, and chip resistance.

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A tire tread rubber composition for trucks and buses that improves wear resistance, aging properties, and chipping resistance compared to conventional formulations. The composition contains oxidized carbon black, a silane coupling agent, and a specific range of carbon black particle size and structure development. The oxidation of the carbon black surface reduces heat generation and improves rubber interaction. The silane coupling agent enhances adhesion between the carbon black and rubber matrix. The optimized carbon black size and structure development provides better chipping resistance compared to larger carbon black particles. The composition has equivalent abrasion resistance to conventional formulations.

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Truck/bus tire tread rubber composition with improved wear resistance. The composition contains carbon black with specific properties to reduce heat generation and scorching during processing while maintaining wear resistance. The carbon black has an iodine adsorption value of 154-165 mg/g and a DBP adsorption value of 115-130 mL/100 g. The composition also contains carbon black at 40-60 parts per hundred rubber (phr) to achieve the wear improvement.

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Tire tread rubber composition for passenger cars with improved wear resistance, heat generation, and rolling resistance compared to conventional tread rubbers. The composition contains 65-80 parts carbon black based rubber (100 parts total) with specific properties: aggregate size distribution (ASD) of 2.1-2.7, DBP oil absorption of 125-145 ml/100 g, iodine adsorption 85-105 g/kg, nitrogen adsorption specific surface area 80-100 m2/g, and coloration 100-120%. This carbon black provides better wear resistance and reduces heat generation vs conventional carbon black.

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Tire tread rubber composition for heavy duty trucks that improves wear resistance, chipping/cutting resistance and heat resistance. The composition contains carbon black with a specific small particle size, reduced silica content, higher vulcanizing agent amount, and a specific accelerator/sulfur weight ratio. This balance of components provides improved wear, chipping resistance, and heat resistance compared to conventional heavy duty tire rubbers. The carbon black has a nitrogen adsorption surface area of 125-135 m2/g and tint color of 120-130%. The vulcanizing agent content is 3.0-4.0 parts/100 rubber, accelerator/sulfur weight ratio is 0.4-0.7, and silica is 5-10 parts/100 rubber.

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Tread rubber composition for truck and bus tires with improved low fuel efficiency and chipping resistance compared to traditional carbon black fillers. The composition uses a combination of carbon black and white rice husk ash (W-RHA) as fillers. The W-RHA provides low fuel efficiency benefits while the carbon black enhances wear resistance. This allows reducing carbon black content while maintaining wear performance. The W-RHA also improves chipping resistance compared to carbon black alone.

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Low rolling resistance tire with improved durability and wet grip compared to traditional low rolling resistance tires. The tire has a tread compound with a specific ratio and type of silica particles. The compound contains a higher percentage of silica with lower surface area compared to high surface area silica. This improves rolling resistance. The lower surface area silica provides better dispersion and interactions with the polymer matrix compared to high surface area silica. It also reduces the need for coupling agents that can degrade at high temperatures. The compound can have additional silica types for further optimization.

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Rubber composition for heavy duty tire treads with improved wear resistance for applications like trucks and buses. The composition contains a specific type of carbon black with optimized particle size, aggregation structure, surface chemistry, and dispersibility. The carbon black has a CTAB specific surface area of 115-145 m²/g, a DBP oil absorption of 24-36 ml/100 g, an IA value of 6-10 mg/g, and a TINT value of 4-7. These carbon black characteristics provide the balance of wear resistance without excessive heat generation and processing challenges.

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Tire tread rubber composition for passenger cars that improves both abrasion resistance and rolling resistance compared to conventional compositions. The composition uses carbon black with modified surface chemistry and larger particle size. This carbon black provides better reinforcement of the rubber, improving abrasion resistance, while also enhancing elasticity and heat generation properties. It allows reducing the amount of carbon black needed compared to conventional compositions, while still improving abrasion resistance. The composition also has lower rolling resistance due to reduced hysteresis loss at low strains. The modified carbon black allows achieving both better abrasion and rolling resistance compared to conventional compositions.

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Method to manufacture tire treads with improved uneven wear resistance by using different rubber compounds for the tread shoulder and center portions. The shoulder uses a rubber composition with excellent wear resistance, while the center uses a rubber composition with good wet braking performance. The center portion is extruded as a block protruding into the shoulder. This exposes the center compound after wear, providing better braking while preventing excessive shoulder wear. The shoulder compound still reinforces the edge. The key is selecting carbon blacks with specific nitrogen adsorption and oil absorption values for the shoulder compound.

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Pneumatic tire for trucks and buses with improved tread performance that balances resistance against heat build-up, cut resistance, chipping resistance, and wear resistance. The tire uses a rubber compound with specific carbon black properties. The carbon black has an iodine adsorption of 130-150 mg/g, dibutyl phthalate absorption of 80-105 ml/100 g, and tinting strength of at least 240%. This carbon black provides a rubber compound that avoids the trade-offs between resistance properties when compared to conventional carbon blacks.

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