Title:
TIRE RUBBER COMPOSITION, TREAD RUBBER, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/249766
Kind Code:
A1
Abstract:
Provided is a tire rubber composition with which the wet grip performance, fuel-efficiency performance, and wear resistance performance of a tire can be highly balanced. In order to solve the problem, the present invention provides a rubber composition including a rubber component, and a filler containing at least silica, the rubber component being characterized by containing: a styrene-butadiene rubber (A) having a glass transition temperature of at most -50 °C, and obtained by modifying a compound represented by formula (1) with a modifying agent; and an unmodified styrene-butadiene rubber (B) having a glass transition temperature which is at least 30 °C higher than the glass transition temperature of the styrene-butadiene rubber (A).
Inventors:
OSHIMA NAOYA (JP)
Application Number:
PCT/JP2022/016939
Publication Date:
December 01, 2022
Filing Date:
March 31, 2022
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L9/06; B60C1/00; C08C19/25; C08K3/013; C08K3/04; C08K3/36; C08L15/00; C08L101/00
Domestic Patent References:
| WO2009113546A1 | 2009-09-17 | |||
| WO2008050851A1 | 2008-05-02 | |||
| WO2013031599A1 | 2013-03-07 | |||
| WO2021106351A1 | 2021-06-03 | |||
| WO2015079703A1 | 2015-06-04 |
Foreign References:
| JP2020504210A | 2020-02-06 | |||
| JP2019515073A | 2019-06-06 | |||
| JP2018534401A | 2018-11-22 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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