Vulcanizable rubber composition for vehicle tire tread, low rolling resistance tread for vehicle tires, processes for making a tire for vehicle wheels and for reducing tire rolling resistance, and, tire for vehicles

摘要

"VULCANIZABLE RUBBER COMPOSITION FOR VEHICLE TIRES, LOW-RESISTANCE TIRES FOR VEHICLE TIRES, PROCESSES FOR MANUFACTURING A TIRE FOR VEHICLE WHEELS AND TO REDUCE THE TIRES, AND TIRE RESISTANCE, VEHICLES ". A vulcanizable rubber composition for vehicle tire treads, comprising: a) a crosslinkable unsaturated chain polymer base, including from 1 to 40 ppct of at least one modified unsaturated chain polymer including polar groups, b) 15 to 100 ppct of a silica-based reinforcement filler, including surface hydroxyl groups, c) 0.5 to 5 parts by weight for every 100 parts by weight of said silica-based reinforcement filler of at least one sulfur-stabilizing agent from the vulcanization network, d) an effective amount of at least one vulcanization agent. Advantageously, said rubber composition allows to obtain a tread with reduced rolling resistance, good wear resistance and good wet skid resistance, while reducing associated production problems to a minimum the use of silica as a reinforcement filler.