Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/171323
Kind Code:
A1
Abstract:
The present invention provides a tire that improves the overall performance of wet performance and dry performance. The invention pertains to a tire that comprises a tread having at least one circumferential groove section. The circumferential groove section is formed of a groove-section forming rubber composition containing a rubber component and silica. The following formulas (1) and (2) are satisfied by: Tanδ when the groove-section forming rubber composition is wet with water and tanδ when same is dry; and a ratio Z between a maximum groove depth D (mm) of the circumferential groove section and a maximum thickness T (mm) of the tread. (1): tanδ when wet with water/tanδ when dry > 1.00
(2): Z ≧ 0.10 (In the formula, tanδ is a loss tangent 30 minutes after the start of measurement, as measured under the conditions of: temperature, 30°C; initial distortion, 10%; motion distortion. 1%; frequency, 10Hz; extension mode; and measurement time, 30 minutes. Z is D/T.)
Inventors:
NOGUCHI TAKAFUMI (JP)
Application Number:
PCT/JP2023/005735
Publication Date:
September 14, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C11/00; B60C1/00; B60C11/03; C08K3/36; C08K5/544; C08L15/00; C08L21/00
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)
Download PDF: