| 摘要 |
PURPOSE:To provide a rubber compsn. which has low specific gravity and high frictional resistance on any road surface without detriment the resistance to breaking and abrasion. CONSTITUTION:100 pts.wt. rubber component is compounded with 5-60 pts.wt. syndiotactic 1,2-polybutadiene resin particles having a mean particle size of 1-500mum and a crystalline m.p. of 110 deg.C or higher. |
