Title:
RUN-FLAT TIRE
Document Type and Number:
WIPO Patent Application WO/2011/024268
Kind Code:
A1
Abstract:
A run-flat tire which shows little heat generation in run-flat running and has a high run-flat durability. More specifically, a run-flat tire comprising a pair of bead parts (1), in each of which a bead core (6) is embedded and a bead filler (7) is located outside of the same in the tire radial direction, and a pair of side walls (2) which are respectively provided with a pair of side reinforcing rubber layers (8), characterized in that, in at least one of the bead filler (7) and the side reinforcing rubber layers (8), a rubber composition comprising a rubber component (A) at least containing a natural rubber and/or a polyisoprene rubber and a low-molecular weight conjugated diene-based polymer (B) having a weight-average molecular weight in terms of polystyrene of 10,000 to 200,000 and containing an aromatic vinyl compound in an amount of less than 5 mass % relative to the total constituting monomers thereof is used.
Inventors:
MATSUO SHIGEAKI (JP)
MASAKI KOJI (JP)
OHTA FUMINORI (JP)
MASAKI KOJI (JP)
OHTA FUMINORI (JP)
Application Number:
PCT/JP2009/064878
Publication Date:
March 03, 2011
Filing Date:
August 26, 2009
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
MATSUO SHIGEAKI (JP)
MASAKI KOJI (JP)
OHTA FUMINORI (JP)
MATSUO SHIGEAKI (JP)
MASAKI KOJI (JP)
OHTA FUMINORI (JP)
International Classes:
B60C1/00; B60C15/06; B60C17/00; C08K3/04; C08K3/30; C08K3/36; C08L7/00; C08L9/00
Foreign References:
| JP2007276589A | 2007-10-25 | |||
| JP2008063364A | 2008-03-21 | |||
| JP2008106148A | 2008-05-08 | |||
| JP2007224305A | 2007-09-06 | |||
| JP2008031207A | 2008-02-14 | |||
| JP2005280534A | 2005-10-13 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
Download PDF: