PROBLEM TO BE SOLVED: To provide a rubber composition for a tire for improving air permeation resistance and fatigue resistance while reducing heat-generation property.SOLUTION: There is provided a rubber composition for a tire obtained by blending 40 to 80 pts.wt. of carbon black having a nitrogen absorption specific surface area of 25 to 90 m/g into 100 pts.wt. of a rubber composition including 10 to 30 wt.% of a masticated rubber masterbatch in which 0.3 to 5.0 wt.% of a specific compound represented by the general formula (i) is coexisted in 100 wt.% of a natural rubber and/or an isoprene rubber and 90 to 70 wt.% of a butyl rubber.SELECTED DRAWING: None
【課題】発熱性を小さくしながら耐空気透過性および耐疲労特性を従来レベル以上に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10〜30重量%、およびブチルゴム90〜70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25〜90m2/gであるカーボンブラックを40〜80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
Elektronische Ressource
Japanisch
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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