| abstract |
The present invention relates to vulcanizable rubber mixtures containing at least the following components I.) 100 parts by weight of an oil-free rubber matrix consisting of a) 15 to 79 parts by weight, preferably 20 to 70 parts by weight of at least one solution SBR (L-SBR) (oil-free) having a glass transition temperature (Tg (L-SBR) ) between -70 ° C to - 10 ° C, b) 20 to 75 parts by weight, preferably 25 to 70 parts by weight, of at least one 1,4-cis-polybutadiene (BR) (oil-free) having a glass transition temperature (Tg (BR) ) between -95 ° C to - 115 ° C, c) 1 to 37.5 parts by weight, preferably 5 to 35 parts by weight of natural rubber (NR) (oil-free) and / or at least one synthetically prepared polyisoprene (IR) having a glass transition temperature (Tg (NR) ) between -50 ° C to -75 ° C based on the oil-free natural rubber (NR) or the oil-free, synthetically produced polyisoprene (IR), II.) At least one hydroxyl-containing polybutadiene-based microgel, III.) At least one hydroxyl-containing, oxidic filler, IV.) At least one polysulfide-containing alkoxysilane, V.) at least one vulcanizing agent, VI.) Optionally at least one rubber additive. |