Title:
SIDE REINFORCEMENT RUBBER COMPOSITION FOR RUN-FLAT TIRE, SIDE REINFORCEMENT RUBBER FOR RUN-FLAT TIRE, AND RUN-FLAT TIRE
Document Type and Number:
WIPO Patent Application WO/2019/111472
Kind Code:
A1
Abstract:
The side reinforcement rubber composition for a run-flat tire according to the present invention contains: a rubber component; a filler containing carbon black A having a nitrogen adsorption specific surface area of 20-60 m2/g, and carbon black B having a nitrogen adsorption specific surface area of 100-150 m2/g, the ratio (a/b) of the contained amount a of carbon black A to the contained amount a of carbon black B being 2.7-10; a vulcanization agent; and a vulcanization accelerator, wherein the side reinforcement rubber composition for a run-flat tire can improve run-flat durability.
Inventors:
NUKUI NORITOSHI (JP)
Application Number:
PCT/JP2018/033193
Publication Date:
June 13, 2019
Filing Date:
September 07, 2018
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L21/00; B60C1/00; B60C17/00; C08K3/04; C08K3/06; C08K5/39
Domestic Patent References:
| WO2004013222A1 | 2004-02-12 |
Foreign References:
| JP2016016825A | 2016-02-01 | |||
| JP2010084059A | 2010-04-15 | |||
| JP2016503105A | 2016-02-01 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
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