To provide a polymer filler which has a small average particle size and can improve a balance between tanδ(0°C) and tanδ(60°C) when being blended with a rubber composition, and a method for producing the same.SOLUTION: A polymer filler contains at least a liquid crystal polymer and has an average particle size of 500 μm or less, and has a ratio ((ABS-1)/(ABS-2)) of absorbance (ABS-1) of a peak in the vicinity of 1280 cm-1 to absorbance (ABS-2) of a peak in the vicinity of 1530 cm-1, which are measured using an FT-IR (ATR method), of 4.0 or less.SELECTED DRAWING: None

    【課題】平均粒子径が小さく、かつゴム組成物に配合した場合に、tanδ(0℃)とtanδ(60℃)とのバランスを改良することが可能な高分子フィラーおよびその製造方法を提供すること。【解決手段】少なくとも液晶高分子を含有し、平均粒子径が500μm以下の高分子フィラーであって、FT-IR(ATR法)を用いて計測した1280cm-1付近のピークの吸光度(ABS-1)と1530cm-1付近のピークの吸光度(ABS-2)との比((ABS-1)/(ABS-2))が4.0以下である高分子フィラー。【選択図】 なし


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    Title :

    POLYMER FILLER AND METHOD FOR PRODUCING THE SAME, AND RUBBER COMPOSITION CONTAINING THE POLYMER FILLER AND PNEUMATIC TIRE


    Additional title:

    高分子フィラーおよびその製造方法、ならびに該高分子フィラーを含有するゴム組成物および空気入りタイヤ


    Contributors:

    Publication date :

    2023-06-28


    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 / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind



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