PROBLEM TO BE SOLVED: To provide a modified cellulose fiber-containing rubber composition and a rubber composition for a tire, achieving excellent rigidity and fracture characteristics as well as a low energy loss by improving dispersibility of cellulose fibers in rubber, and a pneumatic tire excellent in steering stability, rolling resistance characteristics and durability, manufactured by using the above composition.SOLUTION: The modified cellulose fiber-containing rubber composition comprises modified cellulose fibers (A) prepared by adding a cyclic polybasic acid anhydride (a) having a hydrophobic group and 15 or more carbon atoms to cellulose fibers to esterify, a polymer (B) for dispersion having a softening point of 135°C or lower, and a rubber component (C).SELECTED DRAWING: None

    【課題】 ゴム中でのセルロース繊維の分散性を改善することで、優れた剛性及び破断特性と低いエネルギーロスとが両立された変性セルロース繊維含有ゴム組成物、タイヤ用ゴム組成物、並びにそれを用いて作製される、操縦安定性、転がり抵抗特性及び耐久性に優れる空気入りタイヤを提供する。【解決手段】 セルロース繊維に疎水性基を有する炭素数が15以上の環状多塩基酸無水物(a)を付加してエステル化した変性セルロース繊維(A)、軟化点が135℃以下である分散用高分子(B)、及びゴム成分(C)を含有することを特徴とする変性セルロース繊維含有ゴム組成物。【選択図】なし


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    Title :

    RUBBER COMPOSITION, RUBBER COMPOSITION FOR TIRE AND PNEUMATIC TIRE


    Additional title:

    ゴム組成物、タイヤ用ゴム組成物及び空気入りタイヤ


    Contributors:

    Publication date :

    2016-12-22


    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 / C08J Verarbeitung , WORKING-UP



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