Rubber compositions from modified trans-polybutadiene and rubber for tires

摘要

A rubber composition for tire having improved processability, wear resistance, rebound resilience and heat build-up comprises 20˜ 70 parts by weight of a specified butadiene polymer, 30˜80 parts by weight of at least one rubber selected from natural rubber, high cis-1,4 polyisoprene rubber and styrene-butadiene copolymer rubber, and 0˜ 30 parts by weight of high cis-1,4 polybutadiene and/or low cis-1,4 polybutadiene, and contains 35˜100 parts by weight of carbon black, 0˜50 parts by weight of process oil, 0.5˜5 parts by weight of aliphatic carboxylic acid and 0.1˜3 parts by weight of sulfur based on 100 parts by weight of the above rubber components.