Natural rubber mixture with improved rigidity

摘要

Rubber mixture comprises (in parts per hundred rubber (phr)): at least a diene rubber (30-100); at least a vulcanization catalyst (0.1-10), which is thiazole catalyst and/or mercapto catalyst, sulfenamide catalyst and/or guanidine catalyst and/or thiuram catalyst and/or dithiocarbamate catalyst and/or amine catalyst and/or thiourea and/or other catalyst; at least an amorphous and/or precipitated silicic acid (0-150); at least a further hydroxyl group containing fillers (5-100); at least a coupling agent (0.1-20); at least a carbon black (1-100); and additives (2-200).