Provided are a rubber composition for a high grip tire having excellent steering stability, rolling resistance and wear resistance, a tire tread partially using said rubber composition, a bead filler,a tire belt and a pneumatic tire. The rubber composition for the high grip tire contains 0.1-90 parts by mass of a modified liquid diene-based rubber (B) having a functional group derived from a silane compound represented by formula (1), and 20-150 parts by mass of a filler (C) with respect to 100 parts by mass of a solid rubber (A) containing 60 mass% or more of a styrene butadiene rubber having a styrene content of at least 20 mass%, wherein the modified liquid diene-based rubber (B) satisfies the following conditions (i)-(ii) of (i) a weight average molecular weight (Mw) of 15,000-120,000 and (ii) a vinyl content of 70 mol% or less.
提供操纵稳定性、滚动阻抗性能和耐磨耗性优异的高抓地轮胎用橡胶组合物、部分使用其的轮胎胎面、胎边芯、轮胎用带和充气轮胎。高抓地轮胎用橡胶组合物,其是含有固体橡胶(A)、相对于固体橡胶(A)100质量份而言0.1~90质量份的改性液体二烯系橡胶(B)、和20~150质量份的填料(C)的高抓地轮胎用橡胶组合物,所述固体橡胶(A)含有60质量%以上的苯乙烯含量为20质量%以上的丁苯橡胶,所述改性液体二烯系橡胶(B)具有源自下述式(1)所示的硅烷化合物的官能团,前述改性液体二烯系橡胶(B)满足下述(i)~(ii),(i)重均分子量(Mw)为15,000~120,000;(ii)乙烯基含量为70摩尔%以下。
Rubber composition for high grip tire
高抓地轮胎用橡胶组合物
2020-04-17
Patent
Elektronische Ressource
Chinesisch
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 |