FIELD: prevention of sticking, freezing on and freezing together materials at low temperature in building and metallurgical industries and at coal production. SUBSTANCE: prophylactic agent comprises, mas.%: kerosene-gas oil fraction (its boiling point is 195-270 C), 70-78; asphalt, 22-30. Agent is prepared by mixing components at 80-90 C followed by their isothermal sustaining at 80-90 C for 60-90 min. EFFECT: improved quality. 3 cl, 3 tbl
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