The present invention provides a rubber composition for studless winter tires that provides a balanced improvement of performance on ice and wet grip performance, regardless of temperature, and a studless winter tire including the rubber composition. The present invention relates to a tread rubber composition for studless winter tires, containing: a rubber component including an isoprene-based rubber, a polybutadiene rubber, and a styrene butadiene rubber; a water-soluble fine particle; and a liquid plasticizer, the styrene butadiene rubber being present in an amount of 1 to 10% by mass based on 100% by mass of the rubber component, the liquid plasticizer being present in an amount of more than 30 parts by mass per 100 parts by mass of the rubber component.
TREAD RUBBER COMPOSITION FOR STUDLESS WINTER TIRES
LAUFFLÄCHENKAUTSCHUKZUSAMMENSETZUNG FÜR SPIKELOSE WINTERREIFEN
COMPOSITION DE CAOUTCHOUC DE BANDE DE ROULEMENT POUR PNEUS D'HIVER NON CLOUTÉS
2021-05-12
Patent
Electronic Resource
English
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 |