TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE

• Main Author: WATANABE KENYA
• Format: Patent
• Language: English; Japanese
• Published: 13.02.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

To provide a tread rubber composition that can improve wet grip performance and low-temperature embrittlement resistance with a good balance, and a pneumatic tire having a tread at least partially formed from the rubber composition.SOLUTION: This invention relates to a tread rubber composition that contains styrene-butadiene rubber, and has a tanδ peak temperature of -10°C or more and an embrittlement temperature of -40°C or less.SELECTED DRAWING: None 【課題】ウェットグリップ性能、耐低温ぜい化性能をバランスよく改善できるトレッド用ゴム組成物、及び、該ゴム組成物で少なくとも一部が構成されたトレッドを有する空気入りタイヤを提供する。【解決手段】スチレンブタジエンゴムを含み、ｔａｎδピーク温度が−１０℃以上、ぜい化温度が−４０℃以下であるトレッド用ゴム組成物に関する。【選択図】なし