| 摘要 |
<p>A tread mix comprising a cross-linkable unsaturated-chain polymer base; curing agents; silica; and a silane bonding agent; said mix being characterized in that said polymer base comprises a first SBR rubber comprising 20-40% of a first fraction with a mean molecular weight of 50-100×103 and a molecular weight distribution of <1.5, and 80-60% of a second fraction with a mean molecular weight of 800-1500×103 and a molecular weight distribution of <3.0; and in that said silane bonding agent is a mercaptosilane of formula I: SH(CH2)1SiR1R22 (I) where: 1 is an integer of 1 to 6, R2 is—O(CH2)gCH3, R2 is—O(CH2CH2O)m(CH2)nCH3, g is an integer of 0 to 5, m is an integer of 2 to 8, and n is an integer of 3 to 20.</p> |
