To provide a tread rubber composition having excellent wet grip performance after heat degradation and a pneumatic tire.SOLUTION: The present invention relates to a tread rubber composition in which an acetone extraction amount AEf before heat aging and an acetone extraction amount AEo after heat aging satisfy the following formulae (1) and (2). AEf≥16.0% (1), AEo/AEf×100≥95% (2).SELECTED DRAWING: None
【課題】熱劣化後のウェットグリップ性能に優れたトレッド用ゴム組成物及び空気入りタイヤを提供する。【解決手段】熱老化前のアセトン抽出量AEf及び熱老化後のアセトン抽出量AEoが、下記式(1)及び(2)を満たすトレッド用ゴム組成物。AEf≧16.0% (1)AEo/AEf×100≧95% (2)【選択図】なし
TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE
トレッドゴム組成物及び空気入りタイヤ
2020-03-19
Patent
Elektronische Ressource
Japanisch
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 |