MANUFACTURING METHOD OF MODIFIED RUBBER, RUBBER COMPOSITION AND ITS MANUFACTURING METHOD
To provide a manufacturing method of modified rubber, which suppresses a crosslinking reaction and does not damage a safety and hygiene environment in the manufacturing process, while maintaining a high introduction rate of modifying groups into diene-based rubber.SOLUTION: A method for manufacturin...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a manufacturing method of modified rubber, which suppresses a crosslinking reaction and does not damage a safety and hygiene environment in the manufacturing process, while maintaining a high introduction rate of modifying groups into diene-based rubber.SOLUTION: A method for manufacturing modified rubber, in which at least one kind of modifier selected from maleic acid monoesters, maleic acid diesters, maleic acid monoamides and maleic acid diamides is reacted, together with a radical initiator, with diene-based rubber. A rubber composition comprises a rubber component containing 10 mass % or more of the modified rubber, silica and/or carbon black are contained, a content of the silica and/or carbon black is 10 to 130 pts.mass to 100 pts.mass of the rubber component, a main chain of the modified rubber is diene-based rubber, the modified rubber has at least one kind of modifying group selected from a specific group, a content of the modified group in the modified rubber is 0.1 to 5 mol% relative to double bonds that the modified rubber has as the main chain.SELECTED DRAWING: None
【課題】ジエン系ゴムへの変性基の高い導入率を維持しながら、架橋反応を抑え、製造工程内の安全衛生環境を損なわない、変性ゴムの製造方法を提供する。【解決手段】ジエン系ゴムに対して、マレイン酸モノエステル、マレイン酸ジエステル、マレイン酸モノアミド及びマレイン酸ジアミドから選ばれる少なくとも1種の変性剤を、ラジカル開始剤と共に反応させる、変性ゴムの製造方法、変性ゴムを10質量%以上含むゴム成分と、シリカ及び/又はカーボンブラックとを含有し、上記シリカ及び/又はカーボンブラックの含有量が上記ゴム成分100質量部に対して10~130質量部であり、上記変性ゴムの主鎖はジエン系ゴムであり、上記変性ゴムは、特定の群から選ばれる少なくとも1種の変性基を有し、上記変性ゴム中の上記変性基の含有量が、上記変性ゴムが主鎖として有する上記ジエン系ゴムが有する二重結合に対して0.1~5モル%である、ゴム組成物。【選択図】なし |
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