The purpose of the present invention is to provide a rubber composition for a base tread being excellent in fuel efficiency. In the rubber composition for a base tread, a dynamic elastic modulus E* (MPa) and a loss tangent tan´ which are measured at a temperature of 70°C, an initial strain of 10% and a dynamic strain of 2% satisfy the following general formulae (1) to (3), and a strength at break TB (MPa) and an elongation at break EB (%) which are measured according to JIS K6251 satisfy the following general formulae (4) and (5). E * / tan´ ¥ 25 2.0 ¤ E * ¤ 8.0 tan´ ¤ 0.08 EB ¥ 350 TB × EB ¥ 8500
RUBBER COMPOSITION FOR BASE TREAD
KAUTSCHUKZUSAMMENSETZUNG FÜR BASISLAUFFLÄCHE
COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT DE BASE
2019-03-06
Patent
Elektronische Ressource
Englisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
RUBBER COMPOSITION, TREAD, BASE TREAD RUBBER COMPOSITION, AND TIRE
Europäisches Patentamt | 2020
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