RUBBER COMPOSITION AND PNEUMATIC TIRE

Title:

RUBBER COMPOSITION AND PNEUMATIC TIRE

Document Type and Number:

WIPO Patent Application WO/2013/027814

Kind Code:

A1

Abstract:

Provided are: a rubber composition which is capable of improving low fuel consumption and wet grip performance in a balanced manner; and a pneumatic tire which uses the rubber composition in tire constituent members (especially in a tread). The present invention relates to a rubber composition which contains: a rubber component that contains a copolymer which is obtained by copolymerizing 1,3-butadiene, styrene and a compound represented by formula (I), said copolymer having an amino group at one end, having a functional group containing at least one atom selected from the group consisting of nitrogen, oxygen and silicon at the other end, and having a weight average molecular weight of from 1.0 × 105 to 2.5 × 106; silica; and a diene rubber gel having a hydroxyl group and a glass transition temperature from -40˚C to -10˚C. The rubber composition contains 10-30 parts by mass of the diene rubber gel per 100 parts by mass of the rubber component.

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Inventors:

OKABE NOBORU (JP)
UESAKA KENICHI (JP)

Application Number:

PCT/JP2012/071382

Publication Date:

February 28, 2013

Filing Date:

August 24, 2012

Export Citation:

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Assignee:

SUMITOMO RUBBER IND (JP)
OKABE NOBORU (JP)
UESAKA KENICHI (JP)

International Classes:

C08L15/00; B60C1/00; C08C19/25; C08K3/36; C08L9/00

Foreign References:

JP2006257260A	2006-09-28
JP2011063714A	2011-03-31
JP2011046875A	2011-03-10
JP2010111754A	2010-05-20
JP3739198B2	2006-01-25
JP3299343B2	2002-07-08
JP2004504465A	2004-02-12
JP2004506058A	2004-02-26

Other References: