RUBBER COMPOSITION CONTAINING LIQUID POLYMER HAVING HIGH TG AND TIRE HAVING TREAD COMPRISING THE SAME RUBBER COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a rubber composition for high-performance tire treads having good dry static frictional characteristics and good durability including frictional resistance. SOLUTION: This sulfur-curable rubber composition containing 100 phr of a diene-based elastomer having a high Tg, 5-50 phr of a liquid polymer of a polybutadiene having a high Tg and a high vinyl content such as a (1,2-)vinyl content within the range of 40-95% and the Tg within the range of -5 to -40 deg.C, 5-60 phr of a tackifying resin and 3.0-110 phr of a reinforcing microparticle filler is prepared. A tire having a tread prepared from the composition has good dry static frictional characteristics, frictional resistance and durability.