PROBLEM TO BE SOLVED: To provide a method for producing a tire rubber composition that improves fuel economy, wear resistance, wet performance and driving stability with an excellent balance, a tire rubber composition obtained by the production method, and a pneumatic tire prepared therewith.SOLUTION: The present invention provides a method for producing a tire rubber composition that comprises at least one rubber component selected from the group consisting of natural rubber and synthetic diene rubber (A), silica (B), carbon black (C), silane coupling agent represented by a specific formula (D), and vulcanization material comprising sulfur and vulcanization accelerator (E). The method comprises a base kneading step 1-1 for kneading all of the rubber component (A), part of the silica (B), all or part of the carbon black (C), and part of the silane coupling agent (D); a base kneading step 1-2 for kneading a kneaded product 1 obtained by the step 1-1, a remainder of the silica (B), a remainder of the carbon black (C) (in the case when it is partially kneaded in the step 1-1), and a remainder of the silane coupling agent (D); and a finishing kneading step 2 for kneading a kneaded product 2 obtained by the step 1-2, and all or part of the vulcanization material (E).SELECTED DRAWING: None
【課題】低燃費性、耐摩耗性、ウェット性能、操縦安定性をバランス良く改善するタイヤ用ゴム組成物の製造方法、該製造方法により得られるタイヤ用ゴム組成物、及びそれを用いた空気入りタイヤを提供する。【解決手段】天然ゴム及び合成ジエン系ゴムからなる群より選択される少なくとも1種のゴム成分(A)と、シリカ(B)と、カーボンブラック(C)と、特定式で示されるシランカップリング剤(D)と、硫黄及び加硫促進剤を含む加硫系材料(E)とを含有するタイヤ用ゴム組成物の製造方法であって、前記ゴム成分(A)の全量、前記シリカ(B)の一部、前記カーボンブラック(C)の一部又は全部、及び前記シランカップリング剤(D)の一部を混練するベース練り工程1−1、前記工程1−1で得られた混練物1、前記シリカ(B)の残部、前記工程1−1で前記カーボンブラック(C)を一部混練した場合はその残部、及び前記シランカップリング剤(D)の残部を混練するベース練り工程1−2、並びに、前記工程1−2で得られた混練物2、及び前記加硫系材料(E)の一部又は全部を混練する仕上げ練り工程2を含むタイヤ用ゴム組成物の製造方法に関する。【選択図】なし
METHOD FOR PRODUCING TIRE RUBBER COMPOSITION
タイヤ用ゴム組成物の製造方法
2016-08-22
Patent
Electronic Resource
Japanese
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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