A composition formed by compounding from 55 to 75 parts by mass of a carbon black (1) having a nitrogen adsorption surface area of at least 35 m2/g and less than 50 m2/g and from 5 to 20 parts by mass of a carbon black (2) having a nitrogen adsorption surface area of at least 50 m2/g and at most 95 m2/g with 100 parts by mass of a rubber component including from 30 to 70 mass % of butadiene rubber having a cis-1,4 bond content of at least 97% and a Mooney viscosity (ML1+4) of at least 45 at 100° C., a ratio (T-cp)/(ML1+4) of the viscosity of a 5 mass % toluene solution at 25° C. (T-cp) [cps] to the Mooney viscosity being at least 2.0, and from 30 to 70 mass % of other diene rubbers; the total of the carbon blacks (1) and (2) being from 60 to 95 parts by mass.
Rubber composition for tire rim cushion or rubber finishing and pneumatic tire using the same
2016-07-05
Patent
Electronic Resource
English
IPC: | C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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