RUBBER COMPOSITION FOR TIRE SIDEWALL AND TIRE

Title:

RUBBER COMPOSITION FOR TIRE SIDEWALL AND TIRE

Document Type and Number:

WIPO Patent Application WO/2007/094370

Kind Code:

A1

Abstract:

Disclosed is a rubber composition for tire sidewall, which is characterized by containing 10-70 parts by mass of a carbon black having a nitrogen adsorption specific surface area of 20-100 m2/g per 100 parts by mass of a rubber component, which is composed of a polybutadiene rubber having a cis-1,4 bond content of not less than 92% and a vinyl bond content of not more than 1.5% and a natural rubber and/or at least one other diene synthetic rubber, and not containing a softening agent having an aniline point of not more than 50˚C. This rubber composition for tire sidewall is excellent in crack propagation resistance, while securing adequate workability. Also disclosed is a tire wherein such a rubber composition is used for a sidewall.

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Inventors:

KURAZUMI JUNKO (JP)
MASAKI KOUJI (JP)

Application Number:

PCT/JP2007/052633

Publication Date:

August 23, 2007

Filing Date:

February 14, 2007

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)
KURAZUMI JUNKO (JP)
MASAKI KOUJI (JP)

International Classes:

C08L9/00; B60C1/00; C08K3/04; C08L7/00; C08L57/02; C08L91/02

Foreign References:

JP2005015590A	2005-01-20
JP2003327749A	2003-11-19
JPH0776635A	1995-03-20
JP2004091715A	2004-03-25
JPH05279514A	1993-10-26
JPH02208103A	1990-08-17

Other References: