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1. (WO2018079801) A TIRE COMPRISING A TREAD

Pub. No.:    WO/2018/079801    International Application No.:    PCT/JP2017/039232
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Nov 01 00:59:59 CET 2017
IPC: B60C 1/00
C08L 9/06
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors: SAKURADA, Tomoya
Title: A TIRE COMPRISING A TREAD
Abstract:
A tire has a tread comprising at least two radially superposed portions which comprise radially external/internal portions. The external portion is made of a first rubber composition which is based on at least an elastomer matrix, a reinforcing filler comprising between 80 and 200 phr of a reinforcing inorganic filler, and a plasticizing agent comprising 0 to less than 20 phr of a liquid diene polymer having a glass transition temperature of less than -70℃. The internal portion is made of a second rubber composition which is based on an elastomer matrix, a reinforcing filler comprising 20 to 200 phr of a reinforcing inorganic filler, and a plasticizing agent comprising between 5 and 100 phr of a liquid diene polymer having a glass transition temperature of less than -70℃. The amount in phr of the liquid diene polymer in the first rubber composition is lower than that in the second rubber composition.