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Title:
RUBBER COMPOSITION AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2022/124340
Kind Code:
A1
Abstract:
The present invention provides: a pneumatic tire having an improved balance between dry handling stability and low rolling resistance while maintaining outstanding on-ice performance and wet grip performance; and a rubber composition by which said tire is obtained. The rubber composition contains: a rubber component including natural rubber and a modified styrene-butadiene copolymer rubber having a glass transition temperature of -50°C or less; a resin; a filler including silica having a cetyltrimethylammonium bromide specific surface area of 190 m2/g or more; and an oil component, wherein the modified styrene-butadiene copolymer rubber content in the rubber component is more than 50 mass %.

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Inventors:
KAWAKAMI NAO (JP)
Application Number:
PCT/JP2021/045158
Publication Date:
June 16, 2022
Filing Date:
December 08, 2021
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C1/00; C08C19/25; C08K3/22; C08K3/36; C08L7/00; C08L9/06; C08L91/00; C08L101/00
Domestic Patent References:
WO2006062119A12006-06-15
Foreign References:
JP2019182982A2019-10-24
JP2020094113A2020-06-18
JP2020100677A2020-07-02
JP2017186462A2017-10-12
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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