Title:
TIRE
Document Type and Number:
Japanese Patent JP2023096741
Kind Code:
A
Abstract:
To provide a rubber composition for a tire capable of inhibiting an early abrasion wear under a state where a larger force is applied to a tire for an extended period of time and capable of improving an abrasion resistance, and also to provide a tire having a tread composed of the rubber composition for a tire.SOLUTION: A rubber composition for a tire includes: a rubber constituent containing isoprene rubber and styrene-butadiene rubber; and a plasticizer containing at least one of a silica of over 50 pts.mass based on the rubber constituent of 100 pts.mass, a resin and liquid rubber. In the rubber composition for a tire, if an amount of the isoprene rubber in the rubber constituent is (in mass%) is A, an amount of the styrene-butadiene rubber (in mass%) is B, an amount of the silica (in pts.mass) to the rubber constituent of 100 pts.mass is C, an amount of the resin and the liquid rubber (in pts.mass) is D, and an amount of the plasticizer (in pts.mass) is E, A, B, C, D and E satisfy expressions (1), (2) and (3): A/B>3.0 (1); B/D<3.0 (2); and C/E>4.0 (3).SELECTED DRAWING: None
Inventors:
NAKANO SHINYA
KAWAMURA YUKINOBU
KAWAMURA YUKINOBU
Application Number:
JP2021212688A
Publication Date:
July 07, 2023
Filing Date:
December 27, 2021
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C1/00; C08L9/00; B60C11/00; B60C11/03; C08K3/36; C08L45/02
Attorney, Agent or Firm:
Patent Attorney Corporation Asahina Patent Office
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