PROBLEM TO BE SOLVED: To solve problems, for example, a side wall of a tire for heavy load requires tear resistance strength such as cut resistance, but in a conventional method, it is difficult to achieve both of it and breaking extension, therefore, there is a method for blending syndiotactic-1, 2-polybutadiene into a rubber composition, but dispersibility between natural rubber and the syndiotactic-1, 2-polybutadiene is extremely poor, so that strong points of each rubber cannot be exhibited sufficiently.SOLUTION: The tire side wall rubber composition is characterized in that: with respect to 100 mass parts of a rubber component including at least natural rubber and syndiotactic-1, 2-polybutadiene, 0.1-1.5 mass parts of a dihydrazide compound is blended, for solving the problems.

    【課題】重荷重用タイヤのサイドウォールには、耐カット性等の耐引裂強度が求められているが、従来の手法では破断伸びとの両立が困難であった。そのため、シンジオタクチック−1,2−ポリブタジエンをゴム組成物に配合する方法があるが、天然ゴムとシンジオタクチック−1,2−ポリブタジエンとの分散性が非常に乏しいため、それぞれのゴムが有する長所を存分に発揮できないという問題点があった。【解決手段】天然ゴムおよびシンジオタクチック−1,2−ポリブタジエンを少なくとも含むゴム成分100質量部に対し、ジヒドラジド化合物を0.1〜1.5質量部配合してなることを特徴とするタイヤサイドウォール用ゴム組成物によって上記課題を解決した。【選択図】なし


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    Title :

    TIRE SIDE WALL RUBBER COMPOSITION AND PNEUMATIC TIRE USING THE SAME


    Additional title:

    タイヤサイドウォール用ゴム組成物およびそれを用いた空気入りタイヤ


    Contributors:

    Publication date :

    2015-07-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / 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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