BANDE DE ROULEMENT POUR PNEUMATIQUE COMPORTANT UN ELASTOMERE THERMOPLASTIQUE

摘要

A tire tread comprises a composition based on at least an elastomer matrix comprising a polyisoprene and an unsaturated thermoplastic styrene elastomer which represents at most 50% by weight of the elastomer matrix, a reinforcing filler and a crosslinking system. The unsaturated thermoplastic styrene elastomer comprises at least one rigid styrene segment and at least one flexible isoprene segment, which at least one flexible isoprene segment has a glass transition temperature of less than −20° C. Such a tread exhibits an improved resistance to crack propagation.