申请人:Sumitomo Rubber Industries, Ltd.
公开号:EP3495413A1
公开(公告)日:2019-06-12
The present invention provides a rubber composition having good abrasion resistance and a pneumatic tire formed from the rubber composition. Provided is a rubber composition containing: a compound having a group represented by the following formula (I):
wherein R11 and R12 are the same or different and each represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group optionally containing a heteroatom; and a sulfur atom-containing vulcanization accelerator, the rubber composition being obtained by, before kneading a rubber component with any sulfur, kneading the rubber component and the sulfur atom-containing vulcanization accelerator, and then kneading the kneaded mixture with sulfur.
本发明提供了一种具有良好耐磨性的橡胶组合物和一种由该橡胶组合物制成的充气轮胎。本发明提供了一种橡胶组合物,其中含有:具有下式(I)所代表基团的化合物:
其中 R11 和 R12 相同或不同,且各自代表一个氢原子或一个取代或未取代的单价烃基,可选择含有一个杂原子;以及一种含硫原子的硫化促进剂,该橡胶组合物是通过以下方法获得的:在用任何硫磺捏合橡胶组分之前,捏合橡胶组分和含硫原子的硫化促进剂,然后用硫磺捏合捏合混合物。