METHOD FOR PRODUCING TIRE RUBBER COMPOSITION

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METHOD FOR PRODUCING TIRE RUBBER COMPOSITION

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IZUMO SUGURU / KOJIMA RYOJI

PROBLEM TO BE SOLVED: To provide a method for producing a tire rubber composition with its fuel economy, fracture characteristics and workability improved in a balanced manner.SOLUTION: This invention relates to a method for producing a tire rubber composition that includes a first step of inputting a rubber component, silica and a silane coupling agent for kneading, to obtain a first kneaded product; a second step for further kneading the first kneaded product, to obtain a second kneaded product; and a third step for inputting the second kneaded product and a vulcanization agent for kneading, to obtain an unvulcanized rubber composition. In the first step, a reaction treatment for kneading the rubber component, the silica and the silane coupling agent while maintaining a reaction temperature set in a range of 150-170°C, is performed until the following formulas (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、破壊特性及び加工性がバランスよく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、１５０〜１７０℃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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Title :

METHOD FOR PRODUCING TIRE RUBBER COMPOSITION

Additional title:

タイヤ用ゴム組成物の製造方法

Contributors:

IZUMO SUGURU (author) / KOJIMA RYOJI (author)

Publication date :

2018-05-10

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 / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS