To provide a manufacturing method of a natural rubber composition with a reduced odor and a stable viscosity, usable regardless of latex or cup lump, a natural rubber composition obtained by the manufacturing method, a rubber composition for a tire containing the natural rubber composition, and a tire having a tire member composed of the rubber composition for a tire.SOLUTION: A manufacturing method of a natural rubber composition includes: a first step of making a natural rubber piece whose specific surface area is 315 mm/g or more and citric acid solution contact with each other; and a second step of mixing the natural rubber and a hydrazide compound after the first step. A natural rubber composition is manufactured by the manufacturing method. A composition for a tire contains the manufactured natural rubber composition. A tire has a tire member composed of the rubber composition for a tire.SELECTED DRAWING: None
【課題】ラテックスであるか、カップランプであるかを問わず使用可能な、臭気低減および恒粘度化された天然ゴム組成物の製造方法、その製造方法により得られる天然ゴム組成物およびその天然ゴム組成物を含むタイヤ用ゴム組成物、ならびにそのタイヤ用ゴム組成物により構成されたタイヤ部材を備えるタイヤを提供する。【解決手段】比表面積が315mm2/g以上の天然ゴム片とクエン酸水溶液とを接触させる第1工程と、第1工程の後に天然ゴムとヒドラジド化合物とを混合する第2工程とを含む天然ゴム組成物の製造方法、その製造方法で製造される天然ゴム組成物、製造される天然ゴム組成物を含むタイヤ用組成物およびそのタイヤ用ゴム組成物で構成されたタイヤ部材を備えるタイヤ。【選択図】なし
MANUFACTURING METHOD OF NATURAL RUBBER COMPOSITION AND RUBBER COMPOSITION FOR TIRE USING THE SAME
天然ゴム組成物の製造方法およびそれを用いたタイヤ用ゴム組成物
2019-10-31
Patent
Elektronische Ressource
Japanisch
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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