The invention provides a rubber composition prepared by mixing, per 100 parts by mass of a rubber component comprising at least 50% by mass of a diene-based rubber, from 20 to 150 parts by mass of a filler, and from 0.05 to 30 parts by mass of a compound A which has a specific guanidine structure and has a functional group reactive with the diene-based rubber. The rubber composition improves both a high elastic modulus and a low tanδ. The invention also provides a pneumatic tire using the rubber composition.
本发明提供了一种橡胶组合物,其制备方法是将每 100 份质量的橡胶组分(其中至少含 50%质量的二烯基橡胶)、20 至 150 份质量的填料和 0.05 至 30 份质量的化合物 A(具有特定的
胍基结构,并具有与二烯基橡胶反应的官能团)混合在一起。该橡胶组合物可改善高弹性模量和低 tanδ。本发明还提供了一种使用该橡胶组合物的充气轮胎。