| abstract |
A silica-containing rubber mixture is produced from a rubber, a sulphur-containing alkoxysilane, a crosslinking agent, a silica-containing filler, and 0.1 to 15 parts by weight, based on 100 parts by weight of the rubber, of a silicon-free polysulphide additive of the formula (I)n nA-S-(S) x -S-Bn nwhere x is 0-4, and A and B are the same or different, are alkyl or aryl, and contain at last one oxygen, which may be in the form of a carboxyl group. |