This invention provides a rubber composition comprising 1-10 parts by mass of sulfur and 0.1-10 parts by mass of a compound represented by the following general formula (1) or a composition containing the compound as a main component based on 100 parts by mass of a rubber component as well as a pneumatic tire in which at least one of a carcass (
4
) and a belt (
6
) includes a layer composed of steel cords covered with a coating rubber, characterized in that the above rubber composition is used as the coating rubber covering the steel cords in at least one of the carcass (
4
) and the belt (
6
):
(wherein R represents a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group).
本发明提供一种橡胶组合物,包括100份橡胶组分,其中包括1-10份
硫和0.1-10份由下列通式(1)表示的化合物或含有该化合物作为主要组分的组合物,以及至少一个带子(4)和带层(6)中包括由涂覆橡胶覆盖的钢丝组成的层的气动轮胎,其特征在于上述橡胶组合物被用作覆盖至少一个带子(4)和带层(6)中的钢丝的涂覆橡胶,其中R表示碳数为1-16的二价脂肪族基或二价芳香族基。