METHOD OF PRODUCTION OF ELASTOMERIC ROOFING MATERIAL Russian patent published in 1999 - IPC

FIELD: production of polymeric building materials. SUBSTANCE: material is produced by mixing of its components including, wt.p: ethylene-propylene copolymer SKEPT-50-50; isoprene rubber SKI-3C-50; engineering carbon P-324 50-60; phenyl--β--naphthyl amine-naphthama-2 2-3; kaolin 22-24; trioxyethylene--α,ω--dimetacrylate 5-8; ureido-caproic acid 2-3; chloroparaphin KhP-1100. The latter four components are mixed, first, with rubbers. Mixture is sheeted out, molded into continuous band, heat treated in unstressed state at 135 ± 5 C for 3 ± 1 min; treated with flux of accelerated electrons in air atmosphere with absorbed dose up to 100 kGy. EFFECT: higher physico-mechanical properties of material.