Rubber mixture and vehicle tires
Disclosed are sulfur-crosslinkable rubber mixtures for the base of treads having a cap/base construction of vehicle tires, and a vehicle tire comprising the sulfur-crosslinkable rubber mixtures. The disclosed rubber mixture comprises: at least one diene rubber, 15 to 55 phr of at least one filler, at least one hydrocarbon resin comprising 25% to 100% by weight of aromatic monomers, having a softening point according to ASTM E 28 (ring and ball) of 70° C. to 130° C., and 0 phr of further plasticizers, that is, the sulfur-crosslinkable rubber mixture is free from further plasticizers.
1. A sulfur-crosslinkable rubber mixture comprising
at least one diene rubber, wherein the at least one diene rubber comprises 10 to 40 phr of natural polyisoprene (NR) and 60 to 90 phr of polybutadiene (BR),
15 to 55 phr of at least one filler,
at least 5 to 20 phr of one hydrocarbon resin comprising 25% to 100% by weight of aromatic monomers and having a softening point according to ASTM E 28 of 70° C. to 130° C., wherein the at least one hydrocarbon resin comprises at least alpha-methylstyrene and styrene, and
0 phr of plasticizers.
2. The rubber mixture according to claim 1 , wherein the at least one filler is carbon black.
3. The rubber mixture according to claim 1 , wherein the at least one hydrocarbon resin comprises 90% to 100% by weight of aromatic monomers.
4. The rubber mixture according to claim 1 , wherein the at least one hydrocarbon resin comprises 25% to 80% by weight of aromatic monomers.
5. A vehicle tire comprising a sidewall, wherein at least the sidewall of the vehicle tire comprises at least one vulcanizate of at least one sulfur-crosslinkable rubber mixture according to claim 1 .