In a first aspect of the invention, a pneumatic tire is provided, the tire comprising two spaced apart bead portions, a tread portion, a pair of sidewalls extending radially inward from axially outer edges of the tread portion to join the respective bead portions, the axially outer edges of the tread portion defining a tread width, a carcass, an innerliner covering the carcass and defining a tire cavity, and a metal coated foam material attached to the innerliner within the tire cavity.

Provided are a rubber composition for an inner liner having excellent air permeability resistance and low temperature fatigue resistance, and a pneumatic tire using the same. The rubber composition for an inner liner contains 1 to 20 parts by mass of a polybutadiene which contains 30 mol % or less of 1,2-vinyl group and which is liquid at room temperature, with respect to 100 parts by mass of a rubber component which is solid at room temperature.

Provided are a rubber composition for an inner liner having excellent air permeability resistance and low temperature fatigue resistance, and a pneumatic tire using the same. The rubber composition for an inner liner contains 0.05 to 2.0 parts by mass of a thiosulfuric acid compound represented by the general formula (1) or (2) (m indicates an integer of 2 to 5, n indicates an integer of 1 to 3, and M.sup.n+ indicates a monovalent to trivalent metal ion) with respect to 100 parts by mass of rubber component, in which a whole sulfur content is 0.8 parts by mass or less.

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Provided are a rubber composition for an inner liner having excellent air permeability resistance and low temperature fatigue resistance, and a pneumatic tire using the same. The rubber composition for an inner liner contains 0.05 to 0.9 parts by mass of 1,6-hexamethylene dithiosulfate sodium dihydrate with respect to 100 parts by mass of a rubber component, in which a whole sulfur content is less than 0.3 parts by mass.

A rubber composition for a tire inner liner according to an embodiment contains a rubber component containing halogenated butyl rubber, a carbon black, a pulverized bituminous coal, and an aliphatic/aromatic copolymer petroleum, resin. A pneumatic tire according to the embodiment includes an inner liner formed of the rubber composition for a tire inner liner.

The tire of the present disclosure includes an inner surface layer that forms a tire inner surface and is formed of a thermoplastic resin or contains a thermoplastic resin, and a porous body that is partially embedded in the inner surface layer.

An elastic barrier coating composition includes an aqueous dispersion of core-shell particles and an elastomeric polymer that is different from the aqueous dispersed core-shell particles. The aqueous dispersion of core-shell particles include an aqueous medium and core-shell particles dispersed in the aqueous medium. The core-shell particles have a polymeric core at least partially encapsulated by a polymeric shell in which the polymeric shell includes: (i) a barrier segment comprising aromatic groups and urethane linkages, urea linkages, or a combination thereof; and (ii) an elastomeric segment that is different from (i). The barrier segment includes at least 30 weight % of the polymeric shell based on the total solids weight of the polymeric shell. Further, the polymeric shell is covalently bonded to at least a portion of the polymeric core.

Disclosed herein are rubber compositions comprising shea butter and a rubber, and tires (and tire components) made from the rubber compositions. Also disclosed are methods of improving the wear resistance of a rubber composition by utilizing shea butter.

The present invention provides an innerliner rubber composition having an excellent balance of sheet processability and air retention properties, and a pneumatic tire including the rubber composition. The present invention relates to an innerliner rubber composition, containing a rubber component; a mixture of a fatty acid metal salt and a fatty acid amide; an oil; and a C5 petroleum resin, the rubber component including, based on 100% by mass thereof, at least 70% by mass of a butyl-based rubber, the mixture being present in an amount of 0.8 to 3.2 parts by mass per 100 parts by mass of the rubber component, the mixture, the oil, and the C5 petroleum resin being present in a combined amount of 6.0 to 16.0 parts by mass per 100 parts by mass of the rubber component.

Disclosed is a tire with reduced cavity noise including an adhesive agent layer applied to an inside of an inner liner and a sound absorber layer attached to the adhesive agent layer, wherein the adhesive agent layer includes polyether containing alkoxysilane at both ends thereof and a benzotriazole-based UV absorber. The tire with reduced cavity noise is stable without causing separation of a sound absorber even upon heating and deformation during driving.