MIXTURES OF ORGANOSILANOPOLYSULFANES AND OF PREPARING RUBBER COMPOSITIONS CONTAINING THESE MIXTURES Russian patent published in 2002 - IPC

FIELD: rubber industry. SUBSTANCE: invention provides mixtures of organosilanopolysulfanes having general formula (RO)₃Si(CH₂)_xS-S_z-S(CH₂)_xSi(OR)₃, in which R represents linear or branched C1-C8-alkyl, x is integer from 1 to 8, z is integer from 0 to 8. Rubber components, mixtures of organosilanopolysulfanes, and, if needed, special additives are mixed in one step in rubber mixer at 160 to 200 C for 3 to 15 min, after which curing agent is added. Resulting compositions are suitable for running-tracks and tread tires. EFFECT: high discharge temperature without risk of vulcanization and improved quality of compositions. 10 cl, 5 dwg, 3 ex