Title:
RUBBER COMPOSITION FOR TIRE, AND TIRE
Document Type and Number:
Japanese Patent JP2023174336
Kind Code:
A
Abstract:
To provide a rubber composition for tires that has excellent damage resistance performance, and a tire that comprises a tire member composed of the rubber composition for tires.SOLUTION: Provided is a rubber composition for tires that contains a rubber component including an epoxidated diene rubber, an imidazole compound, and a divalent or higher carboxylic acid compound. When the elongation at break EB (%) and breaking strength TB (MPa) are measured in accordance with JIS K6251 using a 2-mm thick dumbbell-shaped test piece in compliance with ASTM D638 Type V, the EB repair rate (%) RREB and the TB repair rate (%) RRTB respectively satisfy (1) TB≥0.40, (2) RREB≥20 and (3) RRTB≥20, where RREB is a value defined by (EB (%) of a repaired test piece/EB (%) of an annealed test piece)×100, and RRTB is a value defined by (TB (MPa) of a repaired test piece/TB (MPa) of an annealed test piece)×100.SELECTED DRAWING: None
Inventors:
SAWADA HAYATO
Application Number:
JP2022087133A
Publication Date:
December 07, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C11/00; B60C1/00; B60C13/00; B60C15/06; C08K5/092; C08K5/3445; C08L9/00
Attorney, Agent or Firm:
Patent Attorney Corporation Asahina Patent Office