Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/095837
Kind Code:
A1
Abstract:
This tire has a tread comprising at least a first layer forming a tread surface and a second layer adjoining the first layer at the radially inner side. The first layer and the second layer are each formed from a rubber composition including a rubber component and a plasticizer. The difference (AE1-AE2) between an acetone extraction amount AE1 in the rubber composition forming the first layer and an acetone extraction amount AE2 in the rubber composition forming the second layer is more than 6.0 mass%. When a dynamic stimulus is applied for 120 hours under the conditions where the dynamic stress is 0.45 MPa, the frequency is 50 Hz, and the temperature is 80℃ while the first layer the second layer are bonded together, the change rate of the acetone extraction amount in the rubber composition forming the first layer before and after the application of the dynamic stimulus is -10% to 10%.
Inventors:
WASHIZU KENSUKE (JP)
HOCHI KAZUO (JP)
HOCHI KAZUO (JP)
Application Number:
PCT/JP2022/043390
Publication Date:
June 01, 2023
Filing Date:
November 24, 2022
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C11/00; C08L21/00
Foreign References:
| JP6945806B1 | 2021-10-06 | |||
| JP2005067236A | 2005-03-17 | |||
| JP2022139989A | 2022-09-26 | |||
| JP2022086476A | 2022-06-09 |
Attorney, Agent or Firm:
ASAHINA & CO. (JP)
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