Title:
TIRE AND RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/256151
Kind Code:
A1
Abstract:
Provided is a tire in which cracks or the like are inhibited from occurring on surfaces of tire members, and which has an excellent tire market life. This tire has a rubber layer, and is characterized in that a fracture energy E1 [MPa·%] determined by cutting out type 7 dumbbell test pieces from the rubber layer, subjecting the pieces to a thermal treatment at 170°C for 12 minutes in a state where the cutting surfaces thereof are put together, and elongating and deforming the pieces, a fracture energy E2 [MPa·%] determined by cutting out type 7 dumbbell test pieces from the rubber layer, subjecting the pieces to a thermal treatment at 170°C for 12 minutes, and elongating and deforming the pieces, and a thickness T [mm] of the rubber layer satisfy formulae (1) and (2). (1): E1/E2 × 100 > 25
(2): E1/E2 × T × 100 > 50
Inventors:
MIYAZAKI SUMIKO (JP)
SATO DAISUKE (JP)
SATO DAISUKE (JP)
Application Number:
PCT/JP2021/019092
Publication Date:
December 23, 2021
Filing Date:
May 20, 2021
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C1/00; B60C13/00; C08K3/00; C08K5/109; C08L17/00; C08L21/00
Domestic Patent References:
| WO2018225564A1 | 2018-12-13 |
Foreign References:
| JP2020078962A | 2020-05-28 | |||
| JP2017141325A | 2017-08-17 | |||
| JP2014210829A | 2014-11-13 | |||
| US4414370A | 1983-11-08 | |||
| JPS596207A | 1984-01-13 | |||
| JPH0558005B2 | 1993-08-25 | |||
| JPH01313522A | 1989-12-19 | |||
| US5010166A | 1991-04-23 |
Other References:
"annual research report TREND", vol. 3, 2000, TOAGOSEI CO., LTD., pages: 42 - 45
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
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