The purpose of the present invention is to provide a rubber composition with a reduced change in peak temperature tan[delta] over time, and a pneumatic tire. The present invention pertains to a rubber composition containing a copolymer obtained by copolymerizing an aromatic vinyl compound and a conjugated diene compound, the rubber composition being characterized in that the heat aging resistance index, represented by formula (1), is 0.45 or less.
本发明目的在于提供橡胶组合物和充气轮胎,其tanδ峰值温度随时间的变化减小。本发明涉及包含至少一种通过共聚芳族乙烯基化合物和共轭二烯化合物获得的共聚物,橡胶组合物的根据式(1)定义的耐热老化性指数为0.45以下。
Rubber composition and pneumatic tire
橡胶组合物和充气轮胎
2021-06-11
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 |