RUBBER MIXTURE Russian patent published in 2003 - IPC

FIELD: rubber industry. SUBSTANCE: invention relates to the vulcanized rubber mixtures and can be used in cable industry for protective envelopes of power cables. Rubber mixtures have the following composite, mas. p. p.: isoprene rubber SKI-3D or its mixture with butadiene-styrene rubber, 82.5-100; copolymer of ethylene with vinyl acetate with content of its 10-14-% sevilene, 6-25; pyroplast as product of thermal polymerization of heavy petroleum fraction, 2-4; kaolin or its mixture with natural chalk as a filling agent, 12.45-54.55; diphenylguanidine or Captax as vulcanization accelerating agent, 0.8-1.05; thiuram, 0.45-3.5; softening agent PP, 5.0-11.25; petroleum bitumen, 3.0-11.25; N-phenyl-N-isopropyl-para-phenylenediamine, 1.5-2.0; technical carbon P514, 40-50; sulfur, 0.4-2.8; zinc white, 4-6; vat residue of production of n-N-butylamine + amine B, 1-2; stearin, 4-6. Invention provides the enhanced resistance to cold, improved processing of rubber mixture, enhanced physical-chemical indices. EFFECT: improved properties of mixture. 2 tbl