Sumitomo Rubber Industries Limited

Jun Okamoto

Takayuki Hattori

Takao Wada

Hiroshi Ito

Kazuyuki Nishioka

Ai Matsuura

Toshikazu Kondo

Ayuko Yamada

Sakae Okubo

Shinichiro Honda

Takanobu Kawamura

Ryoichi Kasahara

Kenji Murata

Kazuhiro Kodama

Ai Takeda

Daichi Fuji

A laminate body of a rubber layer and a resin layer made of a resin, wherein the rubber layer includes a surface-treated superficial layerdirectly united with the resin layer without any intervening adhesive layer.

Laminate body, manufacturing method therefor, and airless tire

A rubber composition that can improve in good balance the fuel economy, wet-grip performance, and abrasion resistance, and a pneumatic tire that uses this rubber composition are provided. This rubber composition contains a rubber component, and carbon black and/or silica, wherein based on 100% by mass of the rubber component, the rubber component contains 5 to 50% by mass of natural rubber, 0.3 to 10% by mass of an epoxidized natural rubber, and at least 5% by mass of a conjugated diene polymer that has a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified, and wherein a total content of the carbon black and the silica is 3 to 100 parts by mass per 100 parts by mass of the rubber component. 

Rubber composition and pneumatic tire

The present invention has its object to provide a rubber composition for a tread which can prevent reversion and can also achieve environmental performance (excellent rolling resistance, response to depletion of oil resources, attention to COemission), wet grip performance, dry grip performance, handling stability, and durability (abrasion resistance, crack resistance) in a well-balanced manner. The present invention also aims to provide a pneumatic tire using the rubber composition for the tread thereof. The rubber composition for a tread includes a rubber component containing 35% by mass or more of an epoxidized natural rubber; and a white filler, wherein a total sulfur content is less than 1.75% by mass, and a crosslink density is 7.0&#xd7;10mol/cmor more.

Rubber composition for tread and pneumatic tire

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Kobe, Japan

Jun Okamoto