RESIN COATED SILICA, RUBBER COMPOSITION AND TIRE

摘要

PROBLEM TO BE SOLVED: To provide a resin coated silica which has good kneadability with rubber and is excellent in the hardness-imparting effect and to provide a rubber composition and a tire each of which has a good balance between the improvement of fuel efficiency due to the decrease in rolling resistance and steering stability.

SOLUTION: The resin coated silica is produced by coating silica having a nitrogen adsorption specific surface area of 50-300 m2/g determined by a BET method sequentially with a first coating material and a second coating material and is characterized in that the first coating material contains phenols and the second coating material contains at least one of (A) a novolac type phenolic resin and a curing agent and (B) a resol type phenolic resin.

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