| 摘要 |
<p>The rubber composition for chafer is characterised in that 55-75 parts by weight of carbon black having a nitrogen adsorption specific surface area of 70-120 m<2>/g and 0.2-0.5 parts by weight of 1, 3-bis (citraconimidomethyl) benzene are blended with respect to 100 parts by weight of a rubber component including 30-50 parts by weight of natural rubber and/or polyisoprene rubber and 50-70 parts by weight of polybutadiene rubber. The pneumatic tyre utilising the chafer rubber composition is excellent in creep resistance, toe-cracking resistance, rim-slippage resistance of a bead portion through its lifetime from the beginning to the end of running, and durability of the bead portion. In the case of a tubeless tyre, it also exhibits good airtightness, thereby ensuring retention of the internal pressure. <IMAGE></p> |
