PROBLEM TO BE SOLVED: To provide a rubber composition for a tire which has improved low heat generation properties and mechanical characteristics.SOLUTION: There is provided a rubber composition for a tire which is a rubber component formed of 40-100 wt.% of a masticated rubber master batch where 0.3-5.0 wt.% of a specific compound represented by general formula (i) is made to coexist with 100 wt.% of a diene rubber containing 40 wt.% or more of natural rubber and/or isoprene rubber and arbitrarily containing a styrene-butadiene rubber, and 60-0 wt.% of the total of styrene-butadiene rubber and natural rubber; and contains 160-220 pts.wt. of a reinforcing filler containing 80-150 pts.wt. of a carbon black having a nitrogen adsorption specific area of 50 m/g or less and 1-20 pts.wt. of a thermosetting resin with respect to 100 pts.wt. of a rubber component containing 40-100 wt.% of the total of the natural rubber and the isoprene rubber in the rubber component and 60-0 wt.% 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40〜100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60〜0重量%からなるゴム成分であると共に、該ゴム成分中の前記天然ゴムおよびイソプレンゴムの合計を40〜100重量%、並びに前記スチレンブタジエンゴム60〜0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50m2/g以下であるカーボンブラックを80〜150重量部を含む補強性充填剤を160〜220重量部、熱硬化性樹脂を1〜20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
2016-11-17
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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