| abstract |
(I) Conjugated diene rubber gel having a toluene swelling index of 16 to 70, (ii) Diene rubber such as natural rubber, polyisoprene rubber, aromatic vinyl-conjugated diene copolymer rubber and / or polybutadiene rubber, and (iii) ) Rubber composition containing optional carbon black and / or silica and composition thereof (a) Improved fluidity and dimensional stability during extrusion molding while maintaining sufficient hardness of high hardness reinforced rubber The pneumatic tire used for the high-hardness reinforcing layer extending along the tire sidewall from the bead portion, and (b) used at both ends of the tire tread extrudate, while maintaining the bending fatigue at both ends of the tread, Pneumatic tires with improved extrudability and extrusion dimensional stability, and (c) high used as an under tread with a thickness of 1.5 mm to 6 mm Discloses a pneumatic tire excellent and undertread of relatively thick gauge the processability and handling stability arranged in sex ratio. |