Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/171320
Kind Code:
A1
Abstract:
The present invention pertains to a tire that is provided with a tread having at least one circumferential groove part. The circumferential groove part is formed of a groove part-forming rubber composition, and said groove part-forming rubber composition has a wet-state E* (MPa), a dry-state E* (MPa), wet-state tanδ and dry-state tanδ, and a groove depth D (mm) in the circumferential groove part that satisfy formula (1-1) and/or formula (1-2), and formula (2). (1-1): Wet-state E*/Dry-state E* ≤ 0.90
(1-2): Wet-state tanδ/Dry-state tanδ ≥ 1.10
(2): D /(Wet-state E*/Dry-state E*) > 9.0
(In the formulas, E* and tanδ represent the complex elastic modulus (MPa) and the loss tangent, respectively, after 30 minutes from the start of measurement which is conducted under the conditions of a temperature at 30°C, an initial strain of 10%, a dynamic strain of 1%, a frequency at 10 Hz, an elongation mode, and a measurement duration of 30 minutes. D represents the groove depth (mm) of the circumferential groove part.)
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Inventors:
ICHIMOTO YAMATO (JP)
Application Number:
PCT/JP2023/005720
Publication Date:
September 14, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C11/00; B60C1/00; B60C11/13; C08K3/26; C08K5/098; C08K5/138; C08L13/00; C08L15/00
Domestic Patent References:
| WO2020246218A1 | 2020-12-10 | |||
| WO2021065615A1 | 2021-04-08 | |||
| WO2020022322A1 | 2020-01-30 |
Foreign References:
| JP2020015484A | 2020-01-30 | |||
| JP2021167389A | 2021-10-21 |
Attorney, Agent or Firm:
WisePlus IP Firm (JP)
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