A rubber composition for a tire is disclosed having improved rupture strength and abrasion resistance while maintaining processability that is a property of a liquid rubber. The rubber component contains (A) a hydrogenated copolymer obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, the hydrogenated copolymer having a weight average molecular weight measured by gel permeation chromatography of 300,000 or more and having a hydrogenation ratio of a conjugated diene moiety of 80 mol % or more, and (B) a liquid rubber, and sulfur, wherein the content of the hydrogenated copolymer (A) is 80 to 95 parts by mass and the content of the liquid rubber (B) is 5 to 20 parts by mass, per 100 parts by mass of the rubber component, and the content of the sulfur is 15 to 30 parts by mass per 100 parts by mass of the liquid rubber (B).
RUBBER COMPOSITION FOR TIRE AND PNEUMATIC TIRE USING SAME
2020-02-20
Patent
Electronic Resource
English
IPC: | C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / 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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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