RUBBER MIXTURE Russian patent published in 1995 - IPC

FIELD: rubber industry. SUBSTANCE: rubber mixture has, mas. p.: carbon-chain rubber 100; sulfur 3-8; sulfenamide vulcanization accelerating agent 0.6-1.4; zinc oxide 2-4; stearic acid 1-3; technical carbon 45-65; hydrocarbon resin 1-4; N-(1,3-dimethylbutyl)-N¹-phenylphenylenediamine-1,4 0.8-1.5; petroleum plasticizer 3-6, and cobalt-containing adhesion promoter 2-6. Cobalt-containing adhesion promoter is a composition of interaction product of alkylphenolamine resine and/or epoxy resin with cobalt borate at the mass ratio (4-5): 1 50-80%, and silicon-containing filler 20-50%. After multiple shift adhesion strength resistance coefficient after steam-air ageing at 90 C for 96 h is 0.25-0.30 as compared with that for prototype 0.18-0.20. EFFECT: increased rubber elasticity modulus and strength of rubber with metal cord. 2 tbl