TREAD RUBBER COMPOSITION FOR TIRE

摘要

PURPOSE: To obtain a tread rubber composition for high-performance tires highly excellent in wear resistance and blowout resistance while retaining their high grip-performance. CONSTITUTION: This tread rubber composition for tires contains (A) 100 pts.wt. of a polymer blend with an average styrene content of 25 to 45wt.%, consisting of 20 to 60 pts.wt. of at least one kind of styrene-butadiene copolymer rubber (Tg : >-25 deg.C) and the balance of at least one kind of diene-rubber (Tg:<=-30 deg.C), (B) 60 to 130 pts.wt. of carbon black (CTAB: 130 to 180m<2> /g, 24M4DBP: 106 to 135ml/100g andΔDst/Dst: 0.60 to 0.80) and (C) 5 to 30 pts.wt. of an ester-based plasticizer.