| 摘要 |
PURPOSE: A rubber composition for a tire tread is provided to manufacture a tire with excellent braking performance on wet roads without loss of fuel efficiency and abrasive performance. CONSTITUTION: A rubber composition includes silica and a copolymer represented by chemical formula 1. In chemical formula 1, PA is a repeating unit represented by chemical formula 2; PE is a repeating unit represented by chemical formula 3; and n is an integer from 2-10. In chemical formula 2 and 3, each of R1-R4 is C1-30 alkylene, C1-30 cycloalkyelne, C6-30 arylene, or C2-30 heteroarylene; I is an integer from 20-60; and m is an integer from 15-45. |
