COUPLING AGENT FOR RUBBER-CARBON BLACK, AND RUBBER COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a coupling agent for a rubber-carbon black suitable as a raw material of a tire which exhibits excellent wet grip performance and low fuel consumption performance without deteriorating processability during kneading of an unvulcanized rubber, and to provide a rubber composition in which the coupling agent is blended.SOLUTION: There is provided: a coupling agent for a rubber-carbon black containing a sulfide compound which has a median diameter of 0.1 to 5.0 μm and is represented by the chemical formula (I) as a component; and a rubber composition for a tire containing the same. There is provided a rubber composition in which 10 to 100 pts.wt. of carbon black is blended based on 100 pts.wt. of a dien-based rubber and 0.2 to 3.0 pts.wt. of the coupling agent for a rubber-carbon black is blended based on 100 pts.wt. of the carbon black.