TREAD RUBBER COMPOSITION AND TIRE MANUFACTURED BY USING THE SAME

摘要

PURPOSE: A tire tread rubber composition is provided to ensure excellent braking property while maximizing good fuel efficiency by reducing hysteresis and to improve processability, braking ability, abrasion resistance, and rolling resistance. CONSTITUTION: A tire tread rubber composition comprises 100 parts by weight of a base rubber and 60-90 parts by weight of silica. The base rubber includes: 70-90 parts by weight of a solution polymerized styrene butadiene rubber(S-SBR) in which the styrene content is 20-30 weight% and the vinyl content including butadiene is 50-60 weight%; and 10-30 parts by weight of a butadiene rubber. The end of the solution polymerized styrene butadiene rubber is modified with alkoxy silane. The molecules of the solution polymerized styrene butadiene rubber are coupled by silicon(Si).