A tire for a heavy vehicle of civil engineering type, intended to be fitted onto a rim, is provided. The nominal diameter of the tire is at least equal to 25 inches. The tire comprises a tread having a radial thickness HT at least equal to 30 mm. The tread has a composition based on at least one diene elastomer, a reinforcing filler predominantly comprising a filler at least partially covered with silica, an agent for coupling the filler to the at least one diene elastomer and a crosslinking system. The dispersion of the filler in the elastomeric matrix has a Z score of greater than or equal to 70.

The present invention relates to a modified conjugated diene-based polymer, a method for preparing the same and a rubber composition including the same, and relates to a modified conjugated diene-based polymer which is prepared by continuous polymerization and has excellent processability, a mooney large relaxation area of 300 MU-s to 1000 MU-s, and narrow molecular weight distribution, and if compounded into a rubber composition, shows improved tensile properties and viscoelasticity properties, particularly, a tan δ value at a high temperature (60° C.) among viscoelasticity properties, and excellent low hysteresis properties and fuel consumption properties, and a rubber composition including the same.

The present invention relates to a modified conjugated diene-based polymer, a method for preparing the same and a rubber composition including the same, and relates to a modified conjugated diene-based polymer which is prepared by continuous polymerization and has excellent processability, a mooney large relaxation area of 300 MU-s to 1000 MU-s, and narrow molecular weight distribution, and if compounded into a rubber composition, shows improved tensile properties and viscoelasticity properties, particularly, a tan δ value at a high temperature (60° C.) among viscoelasticity properties, and excellent low hysteresis properties and fuel consumption properties, and a rubber composition including the same.

A vulcanizate is provided that includes a crosslinked network of elastomeric polymer having hydrogen bonds and covalent bonds. A method for preparing a functionalized elastomeric polymer and a method for preparing the vulcanizate are also provided.

A vulcanizate is provided that includes a crosslinked network of elastomeric polymer having hydrogen bonds and covalent bonds. A method for preparing a functionalized elastomeric polymer and a method for preparing the vulcanizate are also provided.

Provided is a rubber composition that realizes excellent low heat generating properties while maintaining good steering stability when applied to a tire. The rubber composition of the present disclosure contains a rubber component containing a copolymer having a conjugated diene unit and an aromatic vinyl unit, and a filler, where the copolymer is a modified copolymer having a content of the aromatic vinyl unit of less than 10 mass % and modified with a modifier containing a compound represented by the formula (1).

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Provided is a rubber composition that realizes excellent low heat generating properties while maintaining good steering stability when applied to a tire. The rubber composition of the present disclosure contains a rubber component containing a copolymer having a conjugated diene unit and an aromatic vinyl unit, and a filler, where the copolymer is a modified copolymer having a content of the aromatic vinyl unit of less than 10 mass % and modified with a modifier containing a compound represented by the formula (1).

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A pneumatic tire is formed from a tread rubber composition, which comprises a combination of at least two different solution polymerized styrene-butadiene rubbers (s-SBRs), each extended with oil, and a low Tg traction resin. The low Tg traction resin replaces high Tg traction and the rubber processing oil added during rubber compounding in conventional compounds. The low Tg traction resin is a hydrocarbon resin having a Tg between 100° C. to about 30° C.

A pneumatic tire is formed from a tread rubber composition, which comprises a combination of at least two different solution polymerized styrene-butadiene rubbers (s-SBRs), each extended with oil, and a low Tg traction resin. The low Tg traction resin replaces high Tg traction and the rubber processing oil added during rubber compounding in conventional compounds. The low Tg traction resin is a hydrocarbon resin having a Tg between 100° C. to about 30° C.

Provided are a rubber composition for tires and a pneumatic tire, which are excellent in braking performance on ice and failure properties. The rubber composition for tires includes, per 100 parts by mass of a solid rubber component, 1 to 20 parts by mass of a liquid polybutadiene having a glass transition temperature of −80° C. or less and 1 to 30 parts by mass of vegetable granules having a particle size of 0.1 to 500 μm.