| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject mixture capable of avoiding a tendency of a pre-vulcanization on using a long chain organosilanepolysulfane in a rubber mixture and useful as a tire tread by including the organosilanepolysulfane and a trivalent phosphorus compound for desulfurization. SOLUTION: This rubber mixture contains (A) at least one kind of the organosilanepolysulfane [e.g.; bis-[3-(triethoxysilyl)-propyl]tetrasulfane] and (B) at least one kind of desulfurizing reagent (e.g.; triphenylphosphine) consisting of trivalent phosphorus compound. In the mixture, it is preferable to contain a synthetic rubber and silicic acid as filler. The component A is contained in an amount of preferably 0.1-15 mass %, more preferably 5-10 mass % based on the amount of the used filler, and the component B is contained in an amount of preferably 5-80 mass %, more preferably 10-40 mass % based on the amount of the component A.
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