公开(公告)号：US11732115B2

公开(公告)日：2023-08-22

申请号：US16306406

申请日：2017-06-06

申请人： PIRELLI TYRE S.p.A.

发明人： Pierluigi De Cancellis ,  Thomas Hanel ,  Francesco Parazzoli ,  Giuseppina Ratti ,  Juergen Wagemann ,  Marianna Zinna

IPC分类号： C08L9/06 ,  B60C1/00

CPC分类号： C08L9/06 ,  B60C1/0016 ,  B60C1/0025 ,  B60C2001/0058 ,  C08L2205/03 ,  C08L2207/04

摘要： The present invention relates to a tire (100) for vehicle wheels comprising a tire component comprising a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition, wherein said elastomeric composition comprises a polymer blend comprising (a) 50 to 95 percent by weight of a first elastomeric polymer and (b) 5 to 50 percent by weight of a second elastomeric polymer based on the total weight of the polymer blend. The second elastomeric polymer (b) is obtainable by (i) anionic polymerization of at least one conjugated diene monomer and one or more a-olefin monomer(s) in the presence of a polymerization initiator in an organic solvent, and (ii) coupling the polymer chains obtained in (i) by a coupling agent. The second elastomeric polymer (b) has a weight-average molecular weight (Mw) in the range of 5,000-40,000 g/mol and a coupling rate of at least 50 percent by weight.