申请人:SUMITOMO RUBBER INDUSTRIES, LTD.
公开号:EP2730433A1
公开(公告)日:2014-05-14
The present invention provides a rubber composition for a tread which improves in terms of the fuel efficiency of a rubber composition containing an isoprene-based rubber and also offers favorable abrasion resistance and elongation at break, and a pneumatic tire comprising a tread formed from the rubber composition. The present invention relates to a rubber composition for a tread, comprising: a rubber component; a specific amount of a carbon black having a predetermined nitrogen adsorption specific surface area; a specific amount of sulfur; and a specific amount of a compound represented by formula (I) below, the rubber component comprising specific amounts of an isoprene-based rubber and a high-cis butadiene rubber having a predetermined cis content:
本发明提供了一种用于胎面的橡胶组合物,该组合物可提高含有异戊二烯基橡胶的橡胶组合物的燃料效率,同时还具有良好的耐磨性和断裂伸长率,本发明还提供了一种充气轮胎,该轮胎包括由该橡胶组合物形成的胎面。本发明涉及一种用于胎面的橡胶组合物,包括:橡胶成分;一定量的具有预定氮吸附比表面积的炭黑;一定量的硫;以及一定量的下式(I)所代表的化合物,橡胶成分包括一定量的异戊二烯基橡胶和具有预定顺式含量的高顺式丁二烯橡胶: