| 摘要 |
PURPOSE:To obtain a rubber composition of high adhesivity to steel cords, with good processability in uncured state, capable of providing cured rubber with high rigidity and rupture resistance, comprising a raw rubber containing a specific amount of natural rubber, and each specific amount of a rosin cobalt salt, carbon black, and sulfur. CONSTITUTION:The objective rubber composition comprising (A) 100 parts by wt. of a raw rubber containing >=80wt% of natural and/or synthetic polyisoprene rubber, (B) 0.02-0.8 (pref. 0.05-0.4) parts by wt., in terms of cobalt elements, of a rosin cobalt salt, (C) 60-100 parts by wt. of carbon black with an iodine adsorption 70-130mg/g and a DBP oil absorption 50-80ml/100g, (D) 4.5-10 parts by wt. of sulfur, and, if required, (E) zinc oxide, process oil, curing accelerator. USE:For vehicle tires, etc. |
