Title:
RUBBER COMPOSITION FOR TIRES, TREAD RUBBER, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2023/100447
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rubber composition that is for tires and that can prevent discoloration of the exterior of a tire while improving the wet-grip performance and low-rolling resistance of the tire. A solution to the problem is a rubber composition that is for tires and that is characterized by comprising rubber components, a filler, a silane coupling agent, and a fatty acid metal salt, and is characterized in that the rubber components include an isoprene backbone rubber and a styrene-butadiene rubber, the filler at least includes silica, the silane coupling agent has a thiol group. The contained amount of the silane coupling agent is 1-10.5 parts by mass with respect to 100 parts by mass of the silica, and the contained amount of the fatty acid metal salt is 0.1-3.5 parts by mass with respect to 100 parts by mass of the rubber components.
Inventors:
YANAGISAWA YASUTO (JP)
Application Number:
PCT/JP2022/034842
Publication Date:
June 08, 2023
Filing Date:
September 16, 2022
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L7/00; B60C1/00; C08K3/04; C08K3/36; C08K5/548; C08L9/06
Domestic Patent References:
| WO2017188139A1 | 2017-11-02 |
Foreign References:
| JP2013234252A | 2013-11-21 | |||
| JP2020143200A | 2020-09-10 | |||
| JP2018009054A | 2018-01-18 | |||
| JP2020090665A | 2020-06-11 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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