| abstract |
Sulfur vulcanizable rubber composition having improved hysteresis, comprising silica as reinforcing filler as well as a diene polymer functionalized with a functionalizing agent corresponding to the general formula (Y) m -R¹-Si (OR²) 3- n R³n and suitable for use in the manufacture of tires with reduced rolling resistance.n n n The functionalized diene polymers are prepared by adding, under mixing conditions appropriate to the living diene polymer, an amount of functionalizing agent such that the molar ratio of functionalizing agent to the number of active sites is equal to or greater than 1. |