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1. (WO2018182042) A TIRE COMPRISING A TREAD

Pub. No.:    WO/2018/182042    International Application No.:    PCT/JP2018/014040
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Apr 03 01:59:59 CEST 2018
IPC: C08L 9/06
B60C 1/00
C08F 236/10
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors: WATANABE Makiko
FUKASAWA Hiroko
Title: A TIRE COMPRISING A TREAD
Abstract:
A tire having a tread comprising at least two radially superposed portions which comprise a radially external portion intended to come into contact with ground during rolling, the radially external portion being made of a first rubber composition, and a radially internal portion made of a second rubber composition; wherein the first rubber composition is based on at least an elastomer matrix; and a reinforcing filler comprising between 40 and 200 phr of a reinforcing inorganic filler; wherein the second rubber composition is based on at least: an elastomer matrix comprising 20 to 70 phr of a first diene elastomer bearing at least one SiOR function, R being a hydrogen atom or a hydrocarbon radical, 20 to 70 phr of a second diene elastomer which is polyisoprene, and comprising no third diene elastomer or at most 20 phr; a reinforcing filler comprising a reinforcing inorganic filler.