To provide a winter tire, and a rubber composition for tire tread therefor, and in particular, specifically, improve the braking performance of a tire on a wet road surface and an icy/snowy road surface and maintain the performance for a long period of time.SOLUTION: A rubber composition for tire tread comprises: 100 pts.wt. of raw rubber; 20-180 pts.wt. of a reinforcing filler, which comprises low specific surface area silica having a CTAB adsorption specific surface area of 60 to 150 m/g; and 2-50 pts.wt. of a liquid polymer, which has a glass transition temperature of -110 to -70°C and has a weight average molecular weight of 3,000 to 100,000 g/mol. Also provided is a winter tire manufactured using the same.SELECTED DRAWING: None
【課題】冬用タイヤ及びそのためのタイヤトレッド用ゴム組成物を提供する。特には、具体的には、タイヤの濡れた路面や氷雪路面での制動性能を向上させ、これを長期間維持できるようにする。【解決手段】本発明は、原料ゴム100重量部と、CTAB吸着比表面積が60〜150m2/gである低比表面積のシリカを含む補強性充填剤20〜180重量部と、ガラス転移温度が−110〜−70℃であり、重量平均分子量が3,000〜100,000g/molである液状高分子2〜50重量部とを含むタイヤトレッド用ゴム組成物、及びそれを用いて製造された冬用タイヤに関する。【選択図】なし
RUBBER COMPOSITION FOR TIRE TREAD AND TIRE MANUFACTURED USING THE SAME
タイヤトレッド用ゴム組成物及びそれを用いて製造したタイヤ
2020-02-27
Patent
Elektronische Ressource
Japanisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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