Title:
RUBBER COMPOSITION FOR TIRE, TREAD RUBBER, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/249636
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rubber composition for tires which enables tires to combine wet grip performance with fuel-saving performance to a high degree. The rubber composition for tires is characterized by comprising a rubber component comprising an isoprene skeleton rubber and a modified styrene/butadiene rubber having a combined styrene content of 15 mass% or less, a hydrogenated resin having a softening point higher than 100°C and a weight-average molecular weight (g/mol) higher than 1,200 but not higher than 1,600 in terms of polystyrene, silica, and carbon black, the proportion of the silica to the sum of the silica and the carbon black being 50 mass% or higher but less than 100 mass%.
Inventors:
ITO NAHOKO (JP)
Application Number:
PCT/JP2022/010133
Publication Date:
December 01, 2022
Filing Date:
March 08, 2022
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C1/00; C08C19/25; C08K3/04; C08K3/36; C08L7/00; C08L9/00; C08L15/00; C08L57/00; C08L101/00
Domestic Patent References:
| WO2015076048A1 | 2015-05-28 | |||
| WO2019117168A1 | 2019-06-20 | |||
| WO2015079703A1 | 2015-06-04 | |||
| WO2003046020A1 | 2003-06-05 |
Foreign References:
| JP2020045073A | 2020-03-26 | |||
| JP2019073579A | 2019-05-16 | |||
| JP2021054377A | 2021-04-08 | |||
| JP2014214297A | 2014-11-17 | |||
| JP2007217562A | 2007-08-30 |
Other References:
R. R. HAMPTON, ANALYTICAL CHEMISTRY, vol. 21, 1949, pages 923
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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