| 摘要 |
PROBLEM TO BE SOLVED: To give a rubber composition capable to produce a tyre with sustainable abrasion resistance and grip property, improved tensile strength and excellent stiffness under a wide range of temperature, and a tyre having a tread using the rubber composition. SOLUTION: The rubber composition comprises: 100 pts.mass of a rubber component composed of 50 wt% or over of a solution polymerized styrene butadiene rubber with wt. average molecular wt. of 500,000-2,500,000, 40 wt% or less of a natural rubber and 40 wt% or less of a polybutadiene rubber; 50-120 pts.mass of a reinforcing filler containing a carbon black with a nitrogen adsorption specific surface area of 100-250 m<SP>2</SP>/g, an iodine adsorption volume of 110-200 mg/g and a ratio of the specific surface area based on cetyl trimethyl ammonium bromide adsorption to that based on iodine is adsorption of 0.85-1.2, and 0-100 pts.mass of silica relative to 100 pts.mass of the rubber components; and a synthetic resin. COPYRIGHT: (C)2006,JPO&NCIPI
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