Title:
RUBBER COMPOSITION FOR HEAVY-LOAD TIRE
Document Type and Number:
WIPO Patent Application WO/2023/047669
Kind Code:
A1
Abstract:
Provided is a rubber composition for a heavy-load tire in which wear resistance and fuel economy performance are improved over conventional levels, and workability and tensile strength are improved, achieving both of these performances in a well-balanced manner. 40 or more parts by mass of silica is blended into 100 parts by mass of a diene rubber containing 60−85 mass% of isoprene rubber and 15−40 mass% of modified styrene-butadiene rubber having a glass transition temperature of less than −50°C, and a silane coupling agent is blended in an amount of 1−20 mass% with respect to the blended amount of silica.
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Inventors:
KAWASUMI TOMOKO (JP)
TAKEUCHI MIZUKI (JP)
TAKEUCHI MIZUKI (JP)
Application Number:
PCT/JP2022/015257
Publication Date:
March 30, 2023
Filing Date:
March 29, 2022
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C1/00; C08K3/04; C08K3/22; C08K3/36; C08K5/103; C08L7/00; C08L15/00
Domestic Patent References:
| WO2014098155A1 | 2014-06-26 | |||
| WO2019044892A1 | 2019-03-07 |
Foreign References:
| JP2018145239A | 2018-09-20 | |||
| JPH06179732A | 1994-06-28 | |||
| JP2014196407A | 2014-10-16 | |||
| JP2019038875A | 2019-03-14 | |||
| JP2020158709A | 2020-10-01 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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