The purpose of the present invention is to provide a base tread rubber composition which makes it possible to improve pass-by noise and achieve excellent rolling resistance when used in a tire. The present invention is a base tread rubber composition to be used in the base tread of the tread section of a tire, said composition being characterized in that the ratio (0 DEG Ctan[delta]/30 DEG Ctan[delta]) of tan[delta] at 0 DEG C (0 DEG Ctan[delta]) to tan[delta] at 30 DEG C (30 DEG Ctan[delta]) is at least 2.90.
本发明的目的为提供一种胎面基部用橡胶组合物,当应用于轮胎时其可以改善通过噪音并且实现优异的滚动阻力。本发明为一种要在轮胎胎面部中的胎面基部中使用的胎面基部用橡胶组合物,所述组合物的特征在于:在0℃下的tanδ(0℃tanδ)相对于在30℃下的tanδ(30℃tanδ)的比例(0℃tanδ/30℃tanδ)为2.90以上。
BASE TREAD RUBBER COMPOSITION AND TIRE
胎面基部用橡胶组合物和轮胎
2022-02-01
Patent
Electronic Resource
Chinese
RUBBER COMPOSITION, TREAD, BASE TREAD RUBBER COMPOSITION, AND TIRE
European Patent Office | 2020
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