POLYMER BITUMINOUS COMPOSITOIN Russian patent published in 2009 - IPC C08L95/00 

FIELD: chemistry.

SUBSTANCE: invention relates to water-proof compositions which are used in making roll roofing material. The invention relates to a polymer bituminous composition which contains a polymer component, chalk, technical carbon, sulphur, plasticiser, and additionally graphite and stearic acid. The polymer component used is non-degassed wastes from nitrile rubber production, and the plasticiser is bitumen. Components are in the following ratio, in wt %: non-degassed wastes from nitrile rubber production - 12.12 to 18.35; bitumen - 32.00 to 53.69; technical carbon - 10.74 to 19.2; chalk - 13.33 to 20.18; graphite - 5.37 to 12.80; stearic acid - 0.61 to 0.92; sulphur - 1.21 to 1.84.

EFFECT: improved strength properties, water resistance, as well as recycling wastes from synthetic rubber production.

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