Rubber composition comprising furnace carbon black

摘要

According to this invention, a rubber composition is provided, which comprises 100 parts by weight of a rubber component and 25 to 250 parts by weight of carbon black, which carbon black falls within the property range of an electron-microscopic average particle diameter (dn) of above 31 millimicron, an iodine adsorption number of 35 to 60 mg/g and a dibutyl phthalate absorption number (DBP) of 90 to 150 ml/100 g and further has a selected property such that the Dst mode diameter (m mu ) is below the value (m mu ) obtained from the following equation: Dst=2.65xdn+0.64xDBP-27.