TIRE RUBBER COMPOSITION AND TIRE

An object of the present invention is to provide a rubber composition of a tire that is excellent in crack growth resistance, groove cracking resistance, wear resistance, and chipping resistance and a tire using the rubber composition of the tire. In the rubber composition of the tire, a composition...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IZUNO, Kakeru, SAWA, Hideaki, ITO, Keisuke, SATO, Masaki
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:An object of the present invention is to provide a rubber composition of a tire that is excellent in crack growth resistance, groove cracking resistance, wear resistance, and chipping resistance and a tire using the rubber composition of the tire. In the rubber composition of the tire, a composition according to an embodiment of the present invention contains a rubber component, a silica, and a silane coupling agent. In the rubber component, a specific conjugated diene rubber is a conjugated diene rubber. The specific conjugated diene rubber has the content of 35 mass% or more and a natural rubber has the content of 10 mass% or more. The specific conjugated diene rubber includes a block (A) containing an isoprene unit and a block (B) containing a 1,3-butadiene unit and has a modified structure by a siloxane compound at a terminal. At least one of (A) and (B) contains a unit of a vinyl compound containing an amino group. (Mw) of (A) is from 1000 to 30000 and entire (Mw) is from 50000 to 5000000. An entire aromatic vinyl content is from 30 to 45 mass%. An entire vinyl bond content is from 15 to 35 mass%.