Provided are: a rubber composition for a high grip tire having highly balanced wet grip performance, dry grip performance, and steering stability; a tire tread partially using said rubber composition;a bead filler; a tire belt; and a pneumatic tire. The rubber composition for a 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 having a specific structure, 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 (i)-(iii): (i) a weight average molecular weight (Mw) of no less than 1,000 and less than 15,000; (ii) a vinyl content of 70 mol% or less; and (iii) 1-20 functional groups on average per one molecule of the modified liquid diene-based rubber (B).
提供以高平衡性兼具湿抓地性能、干抓地性能、和操纵稳定性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)具有源自具有特定结构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)~(iii),(i)重均分子量(Mw)为1,000以上且低于15,000;(ii)乙烯基含量为70摩尔%以下;(iii)改性液体二烯系橡胶(B)的平均一分子的平均官能团数为1~20个。
RUBBER COMPOSITION FOR HIGH GRIP TIRE
高抓地轮胎用橡胶组合物
2020-04-24
Patent
Electronic Resource
Chinese
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 |