RUBBER COMPOSITION

摘要

PURPOSE: To obtain a rubber composition having highly balanced wet skid resistance against brittleness at low temperature and hardwear properties by allowing to contain two or more rubbers being incompatible to each other. CONSTITUTION: This rubber composition is compounded two or more diene-based rubbers having different glass transition temperatures with a filler and an extender oil for rubber. The difference (χeff -χs ) between a parameter (χeff ) of a mutual action between each of the compounded rubbers and a parameter (χs ) of a mutual action at the spinodal point of the rubber compound system is in a range of 2.0×10<-4> -1.2×10<-2> and the difference (TgM-TgL) between the highest glass transition temperature (TgM) and the lowest glass transition temperature (TgL) in the compounded rubber is >=20 deg.C.