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Title:
RUBBER COMPOSITION FOR TIRE
Document Type and Number:
WIPO Patent Application WO/2020/110940
Kind Code:
A1
Abstract:
Provided is a rubber composition for tires which is intended mainly for use in producing the undertread part of a pneumatic tire and which gives tires having low rolling resistance and excellent in terms of steering stability and durability. Carbon black having a nitrogen-adsorption specific surface area N2SA of 70 m2/g or smaller is incorporated in an amount of 50 parts by mass or more into 100 parts by mass of a rubber ingredient comprising 50 mass% or more natural rubber and 35-50 mass% terminal-modified butadiene rubber, and the rubber composition is made to have a hardness set at 65 or higher and a 40°C resilience set at 80% or higher.

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Inventors:
SHIMIZU KATSUNORI (JP)
OZAKI MAKOTO (JP)
Application Number:
PCT/JP2019/045802
Publication Date:
June 04, 2020
Filing Date:
November 22, 2019
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C1/00; C08K3/04; C08L7/00; C08L15/00
Domestic Patent References:
WO2010041737A12010-04-15
WO2009084285A12009-07-09
Foreign References:
JP2011178848A2011-09-15
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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