| 摘要 |
PURPOSE:To obtain a rubber composition for tires, consisting of a processed powder product containing a cellulosic substance and a rubber component and suitable for use in treads of studless tires excellent in performance on snow and ice. CONSTITUTION:A rubber composition obtained by blending (A) 100 pts.wt. rubber component consisting essentially of a diene-based rubber (e.g. natural rubber or polybutadiene), preferably a rubber component consisting of 65-95 pts.wt., preferably 80-95 pts.wt. above-mentioned rubber and 35-5 pts.wt., preferably 20-5 pts.wt. liquid diene-based polymer having 2000-50000 viscosity-average molecular weight with (B) 3-25 pts.wt., preferably 5-15 pts.wt. processed powder product (preferably chaff of rice) containing a cellulosic substance having 20-600mum, preferably 100-200mum average particle diameter. A tire having a tread consisting of the above-mentioned rubber composition, especially studless tire excellent in performance on snow and ice. |
