Title:
RUBBER COMPOSITION FOR PNEUMATIC-TIRE SIDEWALLS, AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2013/121778
Kind Code:
A1
Abstract:
Provided are: a rubber composition for sidewalls that is capable of providing a highly cut-resistant pneumatic tire in which, even after a sidewall part is cut and damaged, the expansion of said damage, which progresses toward the inner surface of the tire, is prevented advantageously; and a pneumatic tire comprising highly cut-resistant sidewall parts. This rubber composition for pneumatic-tire sidewalls comprises hollow particles, the rubber composition for pneumatic-tire sidewalls being characterized in that: the proportion of the hollow particles in the rubber composition is from 3 vol% to 30 vol% inclusive; the modal particle diameter of the hollow particles is from 1 µm to 100 µm inclusive; and the particle size distribution index of the hollow particles is below or equal to 1.70. Also disclosed is a pneumatic tire in which said rubber composition is employed for the sidewall parts thereof.
Inventors:
YANAGIOKA MASAKI (JP)
Application Number:
PCT/JP2013/000775
Publication Date:
August 22, 2013
Filing Date:
February 13, 2013
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L21/00; B60C1/00; B60C13/00; C08K7/26
Foreign References:
| US7406990B2 | 2008-08-05 | |||
| JPH07215018A | 1995-08-15 | |||
| JP2005280407A | 2005-10-13 | |||
| JP2002301902A | 2002-10-15 | |||
| JPH04362405A | 1992-12-15 | |||
| JP2011046775A | 2011-03-10 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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Claims: