CONJUGATED DIOLEFIN COPOLYMER RUBBER, METHOD FOR PRODUCING THE SAME, RUBBER COMPOSITION AND TIRE

A conjugated diolefin copolymer rubber is produced by copolymerization of a conjugated diolefin and an aromatic vinyl compound and has a primary amino group and an alkoxysilyl group bonded to the copolymer chain. The conjugated diolefin copolymer rubber contains the aromatic vinyl compound in an amo...

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Bibliographische Detailangaben
Hauptverfasser: SHIBATA, MASAHIRO, TADAKI, TOSHIHIRO, SONE, TAKUO, NAGAOKA, TAMOTSU
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A conjugated diolefin copolymer rubber is produced by copolymerization of a conjugated diolefin and an aromatic vinyl compound and has a primary amino group and an alkoxysilyl group bonded to the copolymer chain. The conjugated diolefin copolymer rubber contains the aromatic vinyl compound in an amount of 5 to 60 wt%. The aromatic vinyl compound is densely distributed in one terminal of the copolymer chain, and is scarcely distributed in the other terminal. The conjugated diolefin copolymer rubber has a temperature difference (”Tg) of 25°C or more. The conjugated diolefin copolymer rubber has low hysteresis loss properties as well as improved abrasion resistance, rupture characteristics, and road grip characteristics without impairing wet skid characteristics. A method for producing the conjugated diolefin copolymer rubber is also disclosed.