To provide a method for producing a rubber composition for a tire improved in overall performance of low fuel consumption performance, abrasion resistance and wet grip performance.SOLUTION: The method for producing a rubber composition for a tire includes: a first step of feeding a rubber component, silica and a silane coupling agent and kneading the same to produce a first kneaded product; a second step of further kneading the first kneaded product to produce a second kneaded product; and a third step of feeding the second kneaded product and vulcanization chemicals and kneading the same to produce an unvulcanized rubber composition. In the first step, a reaction treatment of kneading the rubber component, the silica and the silane coupling agent while keeping a reaction temperature predetermined in the range of 130 to 140°C is performed until the following formulae (1) and (2) are satisfied: formula (1): ΔG*t/ΔG*0×100<80 and formula (2): Vt/V0×100<80.SELECTED DRAWING: None

    【課題】低燃費性、耐摩耗性及びウェットグリップ性能の総合性能が改善されたタイヤ用ゴム組成物の製造方法を提供する。【解決手段】ゴム成分、シリカ及びシランカップリング剤を投入して混練し、第一混練物を得る第一工程と、前記第一混練物を更に混練し、第二混練物を得る第二工程と、前記第二混練物及び加硫薬品を投入して混練し、未加硫ゴム組成物を得る第三工程とを含み、前記第一工程において、130〜140℃の範囲内で設定された反応温度を維持しながら、前記ゴム成分、前記シリカ及び前記シランカップリング剤を混練する反応処理を、下記式(1)及び(2)を満たすまで実施するタイヤ用ゴム組成物の製造方法に関する。式(1) ΔG*t/ΔG*0×100<80式(2) Vt/V0×100<80【選択図】なし


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    Titel :

    METHOD FOR PRODUCING RUBBER COMPOSITION FOR TIRE


    Weitere Titelangaben:

    タイヤ用ゴム組成物の製造方法


    Beteiligte:

    Erscheinungsdatum :

    2020-06-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    C08J Verarbeitung , WORKING-UP / 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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