Title:
TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/039778
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a tread rubber composition in which low fuel consumption performance, wet grip performance, on-ice grip performance can be improved in a balanced manner, and a printing blanket having a tread of which at least part is configured from the rubber composition. The invention relates to a tread rubber composition that satisfies the following formulas (1) and (2). |(−30°CE*)−(−10°CE*)| ≤ 150 [MPa] (1) (In this formula, −30°CE* is a complex elastic modulus measured under the conditions of −30°C, 10% initial strain, 0.5% dynamic strain, and 10 Hz frequency, and −10°CE* is a complex elastic modulus measured under the conditions of −10°C, 10% initial strain, 0.25% dynamic strain, and 10 Hz frequency.) 1.5 ≤ 0°Ctanδ/30°Ctanδ ≤ 3.0 (2) (In this formula, 0°Ctanδ is a loss tangent measured under the conditions of 0°C, 10% initial strain, 2.5% dynamic strain, and 10 Hz frequency, and 30°Ctanδ is a loss tangent measured under the conditions of 30°C, 10% initial strain, 2% dynamic strain, and 10 Hz frequency.)
Inventors:
NAKATANI MASAKO (JP)
Application Number:
PCT/JP2019/027288
Publication Date:
February 27, 2020
Filing Date:
July 10, 2019
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C11/00; B60C1/00; C08L9/00; C08L9/06; C08L15/00
Domestic Patent References:
| WO2014021002A1 | 2014-02-06 | |||
| WO2014007309A1 | 2014-01-09 | |||
| WO2018105230A1 | 2018-06-14 | |||
| WO2016084370A1 | 2016-06-02 |
Foreign References:
| JP2014118513A | 2014-06-30 | |||
| JP2018123260A | 2018-08-09 | |||
| JP2017171707A | 2017-09-28 | |||
| JP2015232110A | 2015-12-24 | |||
| JP2017206194A | 2017-11-24 | |||
| JP2016094552A | 2016-05-26 | |||
| JP2013249423A | 2013-12-12 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
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