RUBBER COMPOSITION FOR HIGH GRIP TIRE

Title:

RUBBER COMPOSITION FOR HIGH GRIP TIRE

Document Type and Number:

WIPO Patent Application WO/2019/044890

Kind Code:

A1

Abstract:

Provided are: a rubber composition for a high grip tire having highly balanced wet grip performance, dry grip performance, and steering stability; a tire tread partially using said rubber composition; a bead filler; a tire belt; and a pneumatic tire. The rubber composition for a high grip tire contains 0.1-90 parts by mass of a modified liquid diene-based rubber (B) having a functional group derived from a silane compound having a specific structure, and 20-150 parts by mass of a filler (C) with respect to 100 parts by mass of a solid rubber (A) containing 60 mass% or more of a styrene butadiene rubber having a styrene content of at least 20 mass%, wherein the modified liquid diene-based rubber (B) satisfies (i)-(iii): (i) a weight average molecular weight (Mw) of no less than 1,000 and less than 15,000; (ii) a vinyl content of 70 mol% or less; and (iii) 1-20 functional groups on average per one molecule of the modified liquid diene-based rubber (B).

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Inventors:

KANBARA HIROSHI (JP)
KODA DAISUKE (JP)
UEHARA YOSUKE (JP)

Application Number:

PCT/JP2018/031913

Publication Date:

March 07, 2019

Filing Date:

August 29, 2018

Export Citation:

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Assignee:

KURARAY CO (JP)

International Classes:

C08L9/06; B60C1/00; B60C15/06; C08K3/04; C08K3/36; C08L15/00

Domestic Patent References:

WO2018043699A1	2018-03-08
WO2018043700A1	2018-03-08

Foreign References:

JP2002114874A	2002-04-16
JP2004262170A	2004-09-24
JP2001114938A	2001-04-24
JP2013023568A	2013-02-04
JP2014024912A	2014-02-06
JP2001081239A	2001-03-27
JP2007137941A	2007-06-07
JP2010126671A	2010-06-10
JP2013185090A	2013-09-19
JP2011132298A	2011-07-07

Other References: