| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tread rubber composition capable of providing rolling resistance characteristics and durability (particularly abrasion resistance) with good balance, and to provide a pneumatic tire having a tread manufactured using the same. <P>SOLUTION: The tread rubber composition contains: a rubber component in which a total content of natural rubber and isoprene rubber is≥65 mass% and a content of butadiene rubber modified with a compound represented by formula (1) is≥5 mass%; silica; carbon black; and an alkylphenol-sulfur chloride condensate represented by a specific formula, wherein a content of the silica is 10-45 pts.mass, a content of the carbon black is 10-40 pts.mass, and a content of the alkylphenol-sulfur chloride condensate is 0.2-2.5 pts.mass, based on 100 pts.mass of the rubber component. In formula (1), R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>are the same or different and represent alkyl, alkoxy, silyloxy, acetal, carboxyl, mercapto or derivatives of these; R<SP>4</SP>and R<SP>5</SP>are the same or different and represent H, alkyl or cyclic ether; and n represents an integer. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
