Patent ID: 6635713
Filing Date: 2003-10-21
Classification: C08C,C08L

Abstract:
A rubber composition comprising (A) 2% to 40% by weight of a conjugated diene polymer selected from a group consisting of (A1) a conjugated diene polymer having a vinyl bond content of at least 60% by weight based on the conjugated diene monomer units, and (A2) a conjugated diene polymer having a vinyl bond content of at least 30% by weight based on the conjugated diene monomer units and a coupling ratio of at least 75% by weight, and (b) 98% to 60% by weight of an aromatic vinyl-conjugated diene copolymer having an aromatic vinyl monomer unit content of 25% to 50% by weight and a blocked aromatic vinyl content of at least 50% by weight based on the aromatic vinyl monomer units.