申请人:Sumitomo Rubber Industries, Ltd.
公开号:EP3299414A1
公开(公告)日:2018-03-28
An object of the present invention is to provide a rubber composition which is excellent in cord adhesiveness, steering stability and elongation at break. The present invention relates to a rubber composition for coating a steel cord comprising not less than 0.12 part by mass of zinc benzoate and/or zinc t-butylbenzoate, 0.03 to 0.30 part by mass of fatty acid cobalt salt in terms of cobalt element, and less than 0.5 part by mass in total of a fatty acid having 16 to 22 carbon atoms and a fatty acid derived from the fatty acid cobalt salt which has 16 to 22 carbon atoms based on 100 parts by mass of a rubber component, and a tire having a breaker and/or a carcass obtained by use of the rubber composition for coating a steel cord.
本发明的目的是提供一种在帘线粘合性、转向稳定性和断裂伸长率方面性能优异的橡胶组合物。本发明涉及一种用于涂覆钢帘线的橡胶组合物,该组合物包含质量份数不少于 0.12 份的苯甲酸锌和/或叔丁基苯甲酸锌、质量份数为 0.03 至 0.30 份(以钴元素计)的脂肪酸钴盐、以及质量份数少于 0.以 100 重量份的橡胶成分为基准,具有 16 至 22 个碳原子的脂肪酸和由脂肪酸钴盐衍生出的具有 16 至 22 个碳原子的脂肪酸的总重量小于 0.5 重量份,以及通过使用该橡胶组合物涂覆钢帘线而获得的具有破胎器和/或胎体的轮胎。