摘要:
The present invention provides a polar group-containing copolymer which can provide a rubber composition and a winter tire achieving the abrasion resistance, performance on ice, and handling stability on dry roads in a balanced manner. The present invention relates to a polar group-containing copolymer obtainable by copolymerizing a conjugated diene compound and a polar group-containing vinyl compound, wherein the polar group-containing vinyl compound is a compound that has a polymerizable unsaturated bond and a polar group, wherein any one of carbon atoms forming the polymerizable unsaturated bond and a carbon atom linked to the polar group are connected to each other via at least one carbon atom, and wherein a cis content of the double bond portion of the conjugated diene compound in the polar group-containing copolymer is 80 mol % or more.
摘要:
The present invention provides a rubber composition for a base tread, which improves balance in low heat generating properties and steering stability, and a pneumatic tire using the same. Specifically, the present invention provides a rubber composition for a base tread of a tire comprising 5 to 120 parts by weight of a laminated natural mineral having aspect ratio of 3 to 30 and average particle size of 2 to 30 μm, based on 100 parts by weight of a diene rubber component, and a pneumatic tire having a base tread comprising the rubber composition.
摘要:
The present invention provides a rubber composition having more improved low heat build-up property and abrasion resistance, especially a rubber composition useful for the rubber composition used for a tread of tire, and the present invention also provides a tire having a tread prepared using the rubber composition. The rubber composition is one comprising 15 to 150 parts by weight of silica on the basis of 100 parts by weight of a rubber component, wherein the rubber component comprises not less than 10% by weight of a butadiene rubber which has a vinyl content of not more than 35% by weight and is modified with an un-substituted aminosilane compound.
摘要:
The present invention provides a rubber composition for a tread which can improve both of grip performance and rolling resistance in good balance and a tire having a tread prepared by using it. The rubber composition for a tread of the present invention contains 30 to 80 parts by weight of a silica having a pH of 7.1 to 12.0 when dispersed in water to prepare a 5% aqueous dispersion; and not more than 10 parts by weight of a carbon black on the basis of 100 parts by weight of a rubber component comprising an epoxidized natural rubber and the tire of the present invention has a tread prepared by using the rubber composition.
摘要:
A rubber composition for a tire having improved grip performance on an ice snow road surface while maintaining abrasion resistance performance, containing 5 to 150 parts by mass of an aromatic vinyl polymer and 5 to 200 parts by mass of silica based on 100 parts by mass of a diene-based rubber component containing not less than 20% by mass of a natural rubber and not less than 5% by mass of polybutadiene. It is preferable that a cis content of the polybutadiene is not less than 93%, and a weight average molecular weight of the aromatic vinyl polymer is 300 to 10000.
摘要:
A rubber composition favorably used for a reinforcing layer of a run flat tire, which have both low exothermic property and high strength.A rubber composition for a tire, comprising 10 to 100 parts by weight of carbon black having a nitrogen adsorbing-specific area of 30 to 100 m2/g and a dibutyl phthalate oil absorption amount of at least 50 ml/100 g and at least 2 parts by weight of sulfur or a sulfur compound based on 100 parts by weight of a rubber component containing 10 to 70% by weight of a butadiene rubber obtained by copolymerizing a compound represented by the formula (1): (wherein R1 represents an amino group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group or derivatives thereof).
摘要:
A rubber composition for a tire having improved in low fuel efficiency, wet skid performance, abrasion resistance, and steering stability with favorable balance, and tire which has tread, using the same. A rubber composition for a tire, comprising 30 to 150 parts by weight of silica having a nitrogen adsorbing-specific surface area of 20 to 200 m2/g, and a pH of 7.0 to 12.0 when the silica is dispersed in water to be 5% aqueous solution, based on 100 parts by weight of a rubber component, and a tire which has a tread, using the same.
摘要:
A rubber composition for reinforcing a side having both low exothermic property and high hardness is provided. The invention relates to a rubber composition for reinforcing a side of a run flat tire, comprising 10 to 100 parts by weight of carbon black having a nitrogen adsorbing-specific area of 30 to 100 m2/g and a dibutyl phthalate oil absorption amount of at least 50 ml/ml 100 g, at least 2 parts by weight of sulfur or a sulfur compound, and 5 to 120 parts by weight of (1) a lamellar alumina powder or (2) fluorine-containing mica having an aspect ratio of 3 to 50 based on 100 parts by weight of a diene rubber component.
摘要:
The object of the present invention is to provide a rubber composition for base tread enhancing a low fuel consumption property of a vehicle. A rubber composition for base tread comprises a rubber composition containing 15 to 80% by weight of a butadiene rubber obtained by copolymerizing a compound represented by the formula 1, wherein R1 represents an amino group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group or a derivative thereof.
摘要:
The present invention provides a rubber composition for a tire, which achieves both low heat generating properties and high strength and improves durability of a run flat tire, and a run flat tire obtained using the rubber composition. Specifically, the present invention provides a rubber composition for a tire comprising 10 to 100 parts by weight of carbon black having nitrogen-adsorbing specific surface area of 30 to 100 m2/g and dibutyl phthalate oil absorption of at least 50 ml/100 g, and at least 2 parts by weight of a vulcanizing agent, based on 100 parts by weight of a rubber component containing 10 to 50% by weight of star-shaped solution polymerization butadiene rubber, and a run flat tire using the composition as the reinforcing rubber layer of the sidewall.