摘要:
Provided is a rubber composition for a tire containing a rubber component including 15 to 55 wt% of an end modified group-containing cycloolefin ring-opening polymer having a glass transition temperature of -120 to -90°C and 45 to 85 wt% of an end modified group-containing solution polymerized conjugated diene polymer having a glass transition temperature of -60 to -10°C and having an aromatic vinyl monomer unit content ratio of more than 30 wt% and 50 wt% or less, a silica, and a silane coupling agent including a monosulfide group and/or a thiol group, wherein the content of the silica with respect to 100 parts by weight of the rubber component is 30 to 200 parts by weight, and the content of the silane coupling agent including a monosulfide group and/or a thiol group with respect to 100 parts by weight of the silica is 0.3 to 20 parts by weight.
摘要:
Provided is a rubber composition for a tire containing a cyclopentene ring-opening polymer and a solution polymerized styrene-butadiene rubber. The present invention can provide a rubber composition for a tire containing a cyclopentene ring-opening polymer, which can give a cross-linked rubber excellent in wet grip and low heat buildup property.