To provide a rubber composition for tires which can enhance grip force without impairing wear resistance and steering stability.SOLUTION: The rubber composition for tires contains 3-100 pts.mass of an aromatic hydrocarbon resin satisfying the following inequalities (1) and (2) based on 100 pts.mass of a diene rubber: Tg>36×Mw/Mn+22 (1) and Mw>3000 (2) (where Tg is a glass transition temperature [unit: °C]; Mw is a weight average molecular weight; and Mn is a number average molecular weight).SELECTED DRAWING: None
【課題】耐摩耗性や操縦安定性を損なうことなくグリップ力を高めることを可能にしたタイヤ用ゴム組成物を提供する。【解決手段】ジエン系ゴム100質量部に対し、下記式(1)および(2)の条件を満たす芳香族系炭化水素樹脂を3質量部~100質量部配合する(式中、Tgはガラス転移温度〔単位:℃〕、Mwは重量平均分子量、Mnは数平均分子量である)。Tg>36×Mw/Mn+22 ・・・(1)Mw>3000 ・・・(2)【選択図】なし
RUBBER COMPOSITION FOR TIRES
タイヤ用ゴム組成物
2024-04-25
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 |
RUBBER COMPOSITION FOR TIRES, VULCANIZED RUBBER COMPOSITION FOR TIRES, AND TIRE
European Patent Office | 2023
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