| 摘要 |
PURPOSE:The titled composition having a storage elastic modulus after vulcaniza tion of a specific value, capable of using a tackifier without deteriorating crack occurrence resistance performance in both low-temperature and common travel, having improved performance in unvulcanization and after vulcanization, obtained by blending a rubber composition with a softener of a specific compo nent. CONSTITUTION:(A) 100pts.wt. rubber composition consisting of A1-100pts.wt. butyl halide and A2: 0-40pts.wt. diene rubber is blended with (B) 3-15pts.wt. softener containing >=60% paraffin component and <=5% aromatic component and storage elastic modulus after vulcanization at 10 deg.C is kept <=1.4X10<8> dyn/cm<2> and <=8X10<9>dye/cm<2> at -45 deg.C, respectively. |
