Polymères de diènes à basse hystérésis et à viscosité amélioré obtenu par incorporation d'agents de couplage partielle et d'agents de terminaison à base de composés aromatiques polycycliques condensés ou de nitriles aromatiques

Diene polymers having reduced hysteresis and improved raw viscosity incorporating primary partial coupling and terminals formed from fused-ring polynuclear aromatic compounds or aromatic nitrile compounds

Dienpolymere mit niedriger Hysteresis und verbesserter Viskosität erhalten durch einbringen partieller Kupplungsmittel und Endgruppen hergestellt aus aromatischen condensierten polycyclischen Verbundungen oder aus aromatischen Nitrilen

Abstract

Diene polymers or copolymers having improved raw polymer viscosity and reduced hysteresis in the cured and carbon black reinforced state are provided. These diene polymers or copolymers comprise a mixture of diene polymer or copolymer chains containing carbon-tin bonds in the main polymer or copolymer chains and diene polymer or copolymer chains containing terminals derived from fused-ring polynuclear aromatic compounds or aromatic nitrile compounds. The diene polymer or copolymers are prepared by first coupling a portion of the living diene polymer or copolymer chains obtained by anionic polymerization using a tin polyhalide coupling agent and then terminating the remaining living diene polymer or copolymer chains using fused-ring polynuclear aromatic compounds or aromatic nitrile compounds. The resultant diene polymers or copolymers have improved raw polymer viscosity and when compounded with carbon black and cured have reduced hysteresis properties. The polymers can be utilized to form elastomer compositions for tire treads having reduced rolling resistance.

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    EP-0779330-A1June 18, 1997Bridgestone CorporationSulfur curable mix compositions including silica and an antistatic agent, particularly for manufacturing tires; tire tread produced from such mixes; and tire comprising such a tread
    RU-2535208-C2December 10, 2014Бриджстоун КорпорейшнПолимеры с гидроксиарильными функциональными группами
    WO-2011002930-A3April 28, 2011Bridgestone CorporationHydroxyaryl functionalized polymers