PROBLEM TO BE SOLVED: To provide a rubber composition for a tire for improving low heat-generation property and mechanical characteristics.SOLUTION: There is provided a rubber composition for a tire obtained by blending 30 pts.wt. or more and less than 80 pts.wt. of carbon black having a nitrogen absorption specific surface area 30 to 150 m/g and 5 to 20 pts.wt. of a thermoplastic resin into 100 pts.wt. of a rubber composition which is composed of 50 to 100 wt.% of a masticated masterbatch in which 0.3 to 5.0 wt.% of a specific compound represented by the general formula (i) is coexisted in 40 wt.% or more of a natural rubber and/or an isoprene rubber and 100 wt.% of a diene-based rubber optionally including a styrene-butadiene rubber and 50 to 0 wt.% of the total of the styrene-butadiene rubber and the natural rubber and includes 50 to 100 wt.% of the total of the natural rubber and the isoprene rubber in the rubber component and 50 to 0 wt.% of the total of the styrene-butadiene rubber.SELECTED DRAWING: None
【課題】低発熱性および機械的特性を改良するタイヤ用ゴム組成物を提供する。【解決手段】天然ゴムおよび/またはイソプレンゴムを40重量%以上および任意にスチレンブタジエンゴムを含むジエン系ゴム100重量%に一般式(i)で表わされる特定の化合物0.3〜5.0重量%を共存させた素練りゴムマスターバッチ50〜100重量%、並びにスチレンブタジエンゴムおよび天然ゴムの合計50〜0重量%からなるゴム成分であると共に、該ゴム成分中天然ゴムおよびイソプレンゴムの合計を50〜100重量%、並びにスチレンブタジエンゴムの合計50〜0重量%を含むゴム成分100重量部に対し、窒素吸着比表面積が30〜150m2/gであるカーボンブラックを30重量部以上80重量部未満、熱硬化性樹脂を5〜20重量部配合したことを特徴とする。【選択図】なし
RUBBER COMPOSITION FOR TIRE
タイヤ用ゴム組成物
2016-11-10
Patent
Electronic Resource
Japanese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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