Patent ID: 6359045
Filing Date: 2002-03-19
Classification: C08K

Abstract:
Vulcanizable rubber compounds comprisinga) 20 to 90 parts by weight of a styrene-butadiene rubber produced in solution and/or in emulsion, b) 10 to 50 parts by weight of a butadiene rubber, c) 0 to 40 parts by weight of natural rubber and/or of a synthetic cis-isoprene rubber, d) 40 to 90 parts by weight of silica in combination with a filler activator, e) customary additives, and f) a vulcanizing system comprising i) 0.5 to 3.5 parts by weight of chemical compound (I) (C6H5â€”CH2)2Nâ€”(C&boxH;S)â€”Sâ€”Sâ€”(CH2)6â€”Sâ€”Sâ€”(C&boxH;S)â€”N(CH2â€”C6H5)2 ii) 0.3 to 1.5 parts by weight of sulfur, iii) 1 to 3 parts by weight of benzothiazyl-2-cyclohexyl-sulphenamide and/or N-tert-butyl-2-benzothiazyl-sulphenamide, and iv) 0.5 to 4 parts by weight of N,Nâ€²-diphenylguanidine, wherein the parts by weight are given with respect to 100 parts by weight rubber.