To provide a rubber composition for tires, capable of giving a tire and a heavy duty tire excellent in wet grip properties and low loss properties, and to provide a tire and a heavy duty tire excellent in wet grip properties and low loss properties.SOLUTION: The rubber composition for tires contains: a rubber component containing 50 mass% or more of natural rubber; at least one filler selected from the group consisting of carbon black and silica; polybutene in an amount of 5-50 pts.mass based on 100 pts.mass of the rubber component; and at least one phenolic resin selected from the group consisting of an unmodified phenolic resin and a modified phenolic resin in an amount of 1-30 pts.mass based on 100 pts.mass of the rubber component. The modified phenolic resin has at least one modifying group selected from the group consisting of a cyclic modifying group and a C1-7 acyclic modifying group.SELECTED DRAWING: None

    【課題】ウェットグリップ性と低ロス性に優れるタイヤ及び重荷重用タイヤが得られるタイヤ用ゴム組成物、並びに、ウェットグリップ性と低ロス性に優れるタイヤ及び重荷重用タイヤを提供する。【解決手段】天然ゴムを50質量%以上含むゴム成分と、カーボンブラック及びシリカから選択される群より選択される少なくとも1種の充填剤と、ゴム成分100質量部に対し、5〜50質量部のポリブテンと、ゴム成分100質量部に対し、1〜30質量部の、無変性フェノール樹脂及び変性フェノール樹脂から選択される群より選択される少なくとも1種のフェノール樹脂とを含み、変性フェノール樹脂が、環状変性基及び炭素数が1〜7の非環状変性基からなる群より選択される少なくとも1種の変性基を有するタイヤ用ゴム組成物。【選択図】なし


    Access

    Download


    Export, share and cite



    Title :

    RUBBER COMPOSITION FOR TIRES, TIRE, AND HEAVY DUTY TIRE


    Additional title:

    タイヤ用ゴム組成物、タイヤ及び重荷重用タイヤ


    Contributors:
    TODA TAKUMI (author)

    Publication date :

    2019-12-26


    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



    RUBBER COMPOSITION FOR HEAVY DUTY TIRES, AND HEAVY DUTY TIRE

    SUZUKI KENJI | European Patent Office | 2020

    Free access

    HEAVY-DUTY TIRE RUBBER COMPOSITIONS AND TIRES

    KODA DAISUKE / KANBARA HIROSHI | European Patent Office | 2020

    Free access

    HEAVY-DUTY TIRE RUBBER COMPOSITIONS AND TIRES

    KODA DAISUKE / KANBARA HIROSHI | European Patent Office | 2022

    Free access

    HEAVY-DUTY TIRE RUBBER COMPOSITIONS AND TIRES

    KODA DAISUKE / KANBARA HIROSHI | European Patent Office | 2020

    Free access

    Heavy-duty tire rubber compositions and tires

    KODA DAISUKE / KANBARA HIROSHI | European Patent Office | 2023

    Free access