| 摘要 |
PURPOSE:A rubber composition having excellent workability and processability, obtained by incorporating a silicate filler and a silane coupling agent into a rubber. CONSTITUTION:A silica-compounded rubber composition prepared by incorporating 1-100pts.wt. silicate filler which has a mean primary particle diameter measured with an electron microscope of 30mmu or smaller and a specific surface area measured by BET method of 130m<2>/g or greater and contains at least 80% SiO2, and 0.1-20pts.wt. coupling agent of formula I (where R<1> and R<2> each are a 1-4C alkyl, a 5-8C cycloalkyl or phenyl; R<3> is a 1-8C bivalent straight- chain, branched or cyclic hydrocarbon group; m is 1, 2 or 3; n is 2-6; X is a group of formula II or III; R<4> and R<5> each are a 1-4C straight-chain or branched hydrocarbon group or phenyl) (e.g. a compound of formula IV or V) into 100pts.wt. natural rubber and/or diene rubber. This composition has excellent workability and processability and can be used widely as various tire members, especially a tread rubber and a side-tread rubber, and as various industrial goods such as a hose, a belt, and a rubber vibration isolator. |
