| 摘要 |
PURPOSE:To obtain a rubber composition of improved grip performance at elevated temperatures, suitable for tire tread use, by incorporating a rubber with each specific amount of carbon black and aromatic process oil having specified viscosity. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of a rubber (e.g., natural rubber, styrene-butadiene copolymer rubber) with (B) 30-180pts.wt. of carbon black and (C) 5-180pts.wt. of an aromatic process oil with a dynamic viscosity at 40 deg.C>=6,000cst and ratio of dynamic viscosity at 40 deg.C to that at 100 deg.C>=90 (esp. >=110). |
