发明名称 |
RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE |
摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for a tire tread which is excellent in rubber hardness at high temperatures, 300% modulus, and dry grip performance when formed into a tire, and to provide a pneumatic tire using the composition.SOLUTION: A rubber composition for a tire tread according to the present invention contains carbon black and a diene rubber comprising a carboxy-modified polymer. The content of the carbon black is 80-150 pts.mass with respect to 100 pts.mass of the diene rubber. The carboxy-modified polymer is obtained by modifying a styrene-butadiene rubber (A) with a nitrone compound (B) having a carboxy group, and the content of the carboxy-modified polymer in the diene rubber is 10-100 mass%. The content of styrene units in the styrene-butadiene rubber (A) is 36 mass% or more. The modification ratio of the carboxy-modified polymer is 0.02-4.0 mol%.SELECTED DRAWING: None |
申请公布号 |
JP2016175987(A) |
申请公布日期 |
2016.10.06 |
申请号 |
JP20150056656 |
申请日期 |
2015.03.19 |
申请人 |
YOKOHAMA RUBBER CO LTD:THE |
发明人 |
KATO MANABU;TAKAHASHI RYOTA;OKAMATSU TAKAHIRO;KIRINO YOSHIAKI |
分类号 |
C08L15/00;B60C1/00;C08C19/22;C08K3/04 |
主分类号 |
C08L15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|