| abstract |
The invention relates to a sulfur-crosslinkable rubber mixture, in particular for treads of tires, comprising at least one diene rubber, carbon black and / or silica, zinc oxide and a processing aid.n n n For reduced zinc content without sacrificing the vulcanizate properties, the rubber mixture contains at least one diene rubber, - carbon black and / or silica, - 0.3-2 phr of zinc oxide and At least one processing aid composed of sodium and / or potassium soaps and mono- and / or di-glycerol esters of saturated and / or unsaturated ci to C 28 -carboxylic acids, the weight ratio of sodium and / or potassium soaps to mono- and / or di-glycerol esters in the process aid 0.1 to 10, preferably 2 to 4, is. |