| 摘要 |
PURPOSE:To provide a pneumatic radial tire which has a belt layer consisting of aromatic polyamide fiber cords and a belt layer consisting of steel cords and in which the generation of the separation of the belt layer consisting of aromatic polyamide fiber cords and by which productivity is improved. CONSTITUTION:As the coating rubber which constitutes a belt layer, is used the rubber composition in which 1.0-5 pts.wt. partial condensate of hexamethylol melamine pentamethyl ether, 0.5-5 pts.wt., cresol resin, 4-7 pts.wt. sulfur, and 0.1-0.8 pts.wt. cobalt salt of organic acid are compounded for 100 pts.wt. basic material. |
