Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/248826
Kind Code:
A1
Abstract:
The present invention improves grip performance on ice- and snow-covered road surfaces. This tire comprises a tread section. A cap rubber layer forming the tread section is formed of a rubber composition that contains, in 100 parts by mass of a rubber component, at most 40 parts by mass of a styrene-butadiene rubber (SBR) having a styrene content of at most 25 mass%, and has a loss tangent (-30°C tanδ) of at least 0.10 as measured in a deformation mode of stretching, under a condition in which the temperature is -30°C, the frequency is 10 Hz, the initial strain is 5%, and the dynamic strain factor is 1%. The thickness of the tread section is 10-20 mm.
Inventors:
TAKEBE ASAKA (JP)
NAKAMURA KENTARO (JP)
NAKAMURA KENTARO (JP)
Application Number:
PCT/JP2023/021480
Publication Date:
December 28, 2023
Filing Date:
June 09, 2023
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C11/00; B60C11/03; C08F236/10; C08L9/06
Domestic Patent References:
| WO2019039175A1 | 2019-02-28 | |||
| WO2020179582A1 | 2020-09-10 |
Foreign References:
| JPH0931250A | 1997-02-04 | |||
| JP2021030982A | 2021-03-01 | |||
| JP2021172306A | 2021-11-01 | |||
| JPS6061312A | 1985-04-09 | |||
| JPH05178011A | 1993-07-20 | |||
| JP2007001430A | 2007-01-11 |
Attorney, Agent or Firm:
JODAI Tetsuji et al. (JP)
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