METHOD OF PRODUCTION OF COMPOSITION MASTICS Russian patent published in 2003 - IPC

FIELD: petrochemical industry; production of composition mastics. SUBSTANCE: the invention is dealt with production of the bitumen- polymeric compositions based on the petroleum bitumen, rubber, that are used in construction, for waterproof finish, repair of concrete and asphaltconcrete coatings, filling their cracks, hermeticity, protection against corrosion, construction of a roof covering. Composition mastic contains taken in fixed amounts oil asphalt, ethylene-propylene-diene rubber , organic solvent, fuel oil, a mineral powder, comminuted rubber ant it is vulcanized by sulfur with organic accelerator of vulcanization. The method of production of the composition mastic provides for superposition of bitumen with the rubber solution in the mixture of organic solvent with fuel oil having concentration of polymer up to 25 % , where the produced reaction mass is oxygenated by an air blow at the temperature of 160 - 200 C and vulcanized with adding comminuted rubber. At production of the composition mastic they may use the mineral powder of up to 20 mass % to produced composition mastic. The invention allows to receive a high-quality material for a waterproof finish, hermeticity and manufacturing of roofing materials with use of the cheap elastomer stable to ozone-oxygen action and a thermochemical destruction, to strain ageing that influences duration of operation. Its wide range of heat and frost resistance allows to use the composition mastic in different environmental conditions of Russia. EFFECT: the composition mastic is highly resistant to high heat and frost action as well as ozone-oxygen action and a thermochemical destruction. 3 cl, 2 tbl, 1dwg, 3 ex