PROBLEM TO BE SOLVED: To provide a natural rubber having improved low hysteresis loss property and abrasion resistance and a manufacturing method therefor.SOLUTION: There are provided a natural rubber having long chain branched index (LCB index) at 70°C of 10.6 to 17.9 and long chain branched index (LCB index) at 130°C of 3.0 or less and a manufacturing method of a natural rubber by adding laccase to a raw material natural rubber having long chain branched index (LCB index) at 70°C of 7.8 or more and long chain branched index (LCB index) at 130°C of 3.5 or less.SELECTED DRAWING: None

    【課題】低ヒステリシスロス性及び耐摩耗性を向上させた天然ゴムとその製造方法を提供する。【解決手段】70℃での長鎖分岐指数(LCB index)が10.6以上17.9以下で、且つ130℃での長鎖分岐指数(LCB index)が3.0以下であることを特徴とする、天然ゴム、並びに、70℃での長鎖分岐指数(LCB index)が7.8以上で且つ130℃での長鎖分岐指数(LCB index)が3.5以下である原料天然ゴムにラッカーゼを添加することを特徴とする、天然ゴムの製造方法である。【選択図】なし


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    Title :

    NATURAL RUBBER, MANUFACTURING METHOD OF NATURAL RUBBER, RUBBER COMPOSITION AND TIRE


    Additional title:

    天然ゴム、天然ゴムの製造方法、ゴム組成物及びタイヤ


    Contributors:

    Publication date :

    2017-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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