RUBBER COMPOSITION AND PNEUMATIC TIRE

Title:

RUBBER COMPOSITION AND PNEUMATIC TIRE

Document Type and Number:

WIPO Patent Application WO/2013/099325

Kind Code:

A1

Abstract:

The present invention provides a rubber composition and a pneumatic tire using same that are capable of improving wet grip performance and the dependence of wet grip performance on temperature while maintaining good fuel economy. The present invention relates to a rubber composition in which 100 parts by mass of a rubber component contain: 5-55 mass% of an aromatic vinyl compound/conjugated diene compound copolymer (A) in which the aromatic vinyl compound content is at least 5 mass% and less than 15 mass% and the vinyl bond content of the conjugated diene compound portion is 10-70 mol%; and 5-75 mass% of an aromatic vinyl compound/conjugated diene compound copolymer (B) in which the aromatic vinyl compound content is at least 15 mass% and less than 30 mass% and the vinyl bond content of the conjugated diene compound portion is 10-70 mol%. In 100 parts by mass of the rubber component, the content of silica having a nitrogen adsorption specific surface area of 40-400 m2/g is 10-150 parts by mass.

Inventors:

SATO DAISUKE (JP)

Application Number:

PCT/JP2012/066210

Publication Date:

July 04, 2013

Filing Date:

June 26, 2012

Export Citation:

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Assignee:

SUMITOMO RUBBER IND (JP)
SATO DAISUKE (JP)

International Classes:

C08L9/06; B60C1/00; C08C19/22; C08C19/25; C08F230/08; C08F236/10; C08K3/36; C08L15/00

Domestic Patent References:

WO2012011571A1	2012-01-26
WO2011087004A1	2011-07-21

Foreign References:

JP2012167257A	2012-09-06
JPS6399252A	1988-04-30
JP2006233177A	2006-09-07
JP2007197671A	2007-08-09
JP2001151940A	2001-06-05
JP2008101158A	2008-05-01
JPH08231766A	1996-09-10
JP2000239444A	2000-09-05
JP2011079913A	2011-04-21
JPH08253520A	1996-10-01
JPS4817674B1	1973-05-31
JP2010077413A	2010-04-08
JP2000344955A	2000-12-12

Other References: