TIRE

WIPO Patent Application WO/2019/244798

A1

The purpose of the present invention is to provide a tire in which bead sections exhibit high durability even if the tire is subjected to a high load. This tire is provided with: bead cores 4 each embedded in one of a pair of bead sections 1; and a carcass 5 comprising at least one ply 50 having a ply body section 51 which is engaged between the bead cores 4 and which extends toroidally, and also having ply turned-back sections 52 turned back around the bead cores 4 from the ply body section. The tire is characterized in that: the tire is further provided with insertion rubber members 6 positioned outside the ply turned-back sections 52 in the tire width direction; the insertion rubber members 6 at least comprise outer rubber 6a which is located on the outer side in the tire width direction, and inner rubber 6b which is located on the inner side in the tire width direction; the shear modulus of elasticity (Go') of the outer rubber 6a and the shear modulus of elasticity (GI') of the inner rubber 6b satisfy the relationship of 0.5 < Go'/GI' < 1; and the insertion rubber members 6 comprise a rubber composition, the rubber composition at least containing a rubber component, a filler, a hydrazide compound, and a thiuram-based compound.

TAKEI KENICHI (JP)
SAITO JUNKO (JP)

PCT/JP2019/023699

December 26, 2019

June 14, 2019

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BRIDGESTONE CORP (JP)

B60C15/06; C08K3/013; C08K3/04; C08K3/06; C08K3/36; C08K5/25; C08K5/40; C08L21/00

WO2014148453A1

2014-09-25

JP2007023070A	2007-02-01
JP2009101920A	2009-05-14
JP2013248970A	2013-12-12
US20110114239A1	2011-05-19
JP2015093879A	2015-05-18
JP2018062621A	2018-04-19

SUGIMURA Kenji (JP)

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