Title:
RUBBER COMPOSITION, PRODUCTION METHOD THEREFOR, AND TIRE PRODUCT
Document Type and Number:
WIPO Patent Application WO/2024/038880
Kind Code:
A1
Abstract:
[Problem] To provide a rubber composition which can give tires improved in wear resistance, wet grip performance, steering stability, and running performance on ice- or snow-covered roads. [Solution] This rubber composition comprises: a rubber component which comprises an aromatic vinyl/conjugated diene copolymer rubber and/or butadiene rubber and has a glass transition temperature of -100°C to -55°C, excluding -55°C; and an additive for rubbers which comprises a sulfurized hydrocarbon polymer. The rubber composition is characterized in that the rubber component comprises an aromatic vinyl/conjugated diene copolymer rubber and/or butadiene rubber and the total content of the aromatic vinyl/conjugated diene copolymer rubber and the butadiene rubber is 70 mass% or higher with respect to the whole rubber component, that the sulfurized hydrocarbon polymer is a product of reaction between a polymer of one or more unsaturated hydrocarbons and sulfur, the unsaturated hydrocarbons including an alicyclic unsaturated compound, and that the sulfurized hydrocarbon polymer has a weight-average molecular weight of 500-4,000.
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Inventors:
AKIYAMA YOICHI (JP)
ASHIURA MAKOTO (JP)
MATSUO YUSUKE (JP)
ASHIURA MAKOTO (JP)
MATSUO YUSUKE (JP)
Application Number:
PCT/JP2023/029624
Publication Date:
February 22, 2024
Filing Date:
August 16, 2023
Export Citation:
Assignee:
ENEOS CORP (JP)
International Classes:
C08L9/00; B60C1/00; C08K3/013; C08L57/06
Domestic Patent References:
| WO2018189878A1 | 2018-10-18 | |||
| WO2023032664A1 | 2023-03-09 |
Foreign References:
| JP2021031568A | 2021-03-01 | |||
| JP2018187960A | 2018-11-29 | |||
| JPS5033A | 1975-01-06 | |||
| JPS63301244A | 1988-12-08 |
Attorney, Agent or Firm:
SORIMACHI Hiroshi et al. (JP)
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