本発明は、温度に関わらず、氷上性能及び耐摩耗性をバランス良く改善できるスタッドレスタイヤ用ゴム組成物、及びこれを用いたスタッドレスタイヤを提供する。本発明は、イソプレン系ゴム、ブタジエンゴム、水溶性微粒子、窒素吸着比表面積180m2/g以上の微粒子シリカ、及び液体可塑剤を含み、ゴム成分100質量部に対する微粒子シリカの含有量が105質量部以上、液体可塑剤の含有量が30質量部を超えているスタッドレスタイヤ用トレッドゴム組成物に関する。
The present invention provides a rubber composition for studless winter tires that provides a balanced improvement of performance on ice and abrasion resistance, regardless of temperature, and a studless winter tire including the rubber composition. The present invention relates to a tread rubber composition for studless winter tires, containing: an isoprene-based rubber; a polybutadiene rubber; a water-soluble fine particle; a fine particle silica having a nitrogen adsorption specific surface area of 180 m2/g or more; and a liquid plasticizer, the fine particle silica being present in an amount of 105 parts by mass or more, the liquid plasticizer being present in an amount of more than 30 parts by mass, each per 100 parts by mass of the rubber component in the tread rubber composition.
スタッドレスタイヤ用トレッドゴム組成物
2020-01-16
Patent
Electronic Resource
Japanese
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 |