To provide a winter tire having advanced performance (for example, grip) and advanced rolling resistance on ice.SOLUTION: There are provided: a rubber composition which comprises 35 phr to 60 phr of a first polybutadiene rubber having a glass transition temperature in the range of -80°C to 105°C, 5 phr to 30phr of a second polybutadiene rubber having a glass transition temperature in the range of -20°C to -40°C, 10 phr to 60 phr of a polyisoprene selected from one or a plurality of a synthetic polyisoprene and a natural rubber, 30 phr to 200 phr of at least one filler and 40 phr to 120 phr of at least one plasticizer having a glass transition temperature in the range of -40°C to 110°C; and a tire comprising the rubber composition.SELECTED DRAWING: None
【課題】氷上での先進的な性能(例えば、グリップ)および先進的な転がり抵抗を有する冬用タイヤを提供する。【解決手段】-80℃~-105℃の範囲内のガラス転移温度を有する、第1のポリブタジエンゴムを35phr~60phr、-20℃~-40℃の範囲内のガラス転移温度を有する、第2のポリブタジエンゴムを5phr~30phr、合成ポリイソプレンおよび天然ゴムのうちの1つまたは複数から選択されるポリイソプレンを10phr~60phr、少なくとも1種の充填剤を30phr~200phr、ならびに-40℃~-110℃の範囲内のガラス転移温度を有する、少なくとも1種の可塑剤を40phr~120phr含むゴム組成物、さらにゴム組成物を含むタイヤを提供する。【選択図】なし
RUBBER COMPOSITION FOR WINTER TIRE AND WINTER TIRE
冬用タイヤ用のゴム組成物および冬用タイヤ
2023-10-11
Patent
Elektronische Ressource
Japanisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
RUBBER COMPOSITION FOR WINTER TIRE TREAD, AND WINTER TIRE
Europäisches Patentamt | 2021
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