RUBBER COMPOSITION AND PNEUMATIC TIRE

摘要

PROBLEM TO BE SOLVED: To provide: a rubber composition having the excellent on-ice performance; and a pneumatic tire formed using this rubber composition.

SOLUTION: This rubber composition comprises 100 pts.wt. of a diene-based rubber and 0.3-20 pts.wt. of a porous hydroxyapatite powder. This pneumatic tire is provided with a tread formed with the rubber composition. The powder uses a natural hydroxyapatite powder obtained from domestic-animal bones or the like, and may combine a plant granular material such as a pulverized product of walnut shell or a plant granular material whose surface is surface-treated with a resin liquid of a rubber adhesion improver.

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