The present invention relates to a branched conjugated diene copolymer which is useful for preparing a rubber composition, having high uniformity of a temperature dependence curve of a viscoelasticity tan´, for a tire, a rubber composition comprising the copolymer, and a pneumatic tire produced using the rubber composition for a tire. The branched conjugated diene copolymer is composed of monomer components comprising a branched conjugated diene compound represented by a general formula (1): wherein R 1 represents an aliphatic hydrocarbon group having 6 to 11 carbon atoms, and an aromatic vinyl compound represented by a general formula (2): wherein R 2 represents an aromatic hydrocarbon group having 6 to 10 carbon atoms, and R 5 represents a hydrogen atom or the like, and a copolymerization ratio (m) of the aromatic vinyl compound (2) is 45% by mass or more.
BRANCHED CONJUGATED DIENE COPOLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE
VERZWEIGTES KONJUGIERTES DIENCOPOLYMER, KAUTSCHUKZUSAMMENSETZUNG UND LUFTREIFEN
COPOLYMÈRE DE DIÈNE CONJUGUÉ RAMIFIÉ, COMPOSITION DE CAOUTCHOUC ET PNEUMATIQUE
09.11.2016
Patent
Elektronische Ressource
Englisch
BRANCHED CONJUGATED DIENE COPOLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE
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