To improve secular change properties while having excellent grip performance due to blending of a resin.SOLUTION: A rubber composition for tires contains: a rubber component comprising a diene rubber; silica; a resin; and an ether ester compound represented by general formula (1) and having an HLB of 10 or less. In the formula, Rand Reach represent a C1-30 hydrocarbon group; Rrepresents a C2-4 alkylene group; n represents an average addition molar number; and 60 mass% or more of (RO)consists of oxyethylene groups. A pneumatic tire includes a tread comprising the rubber composition.SELECTED DRAWING: None
【課題】樹脂を配合したことによる優れたグリップ性能を持ちつつ、経年変化性を改善する。【解決手段】ジエン系ゴムからなるゴム成分、シリカ、樹脂、及び、下記一般式(1)で表されるHLBが10以下のエーテルエステル化合物、を含むタイヤ用ゴム組成物である。式中、R1及びR2は炭素数1〜30の炭化水素基、R3は炭素数2〜4のアルキレン基、nは平均付加モル数を表し、(R3O)nの60質量%以上がオキシエチレン基からなる。また、該ゴム組成物からなるトレッドを備えた空気入りタイヤである。【化1】【選択図】なし
RUBBER COMPOSITION FOR TIRES, AND PNEUMATIC TIRE
タイヤ用ゴム組成物及び空気入りタイヤ
2019-08-08
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / 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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