FIELD: chemistry.
SUBSTANCE: invention relates to adhesive additives intended as an additive to oil road bitumen used in construction of road surfaces of any category with high strength and durability. Adhesive additive for road oil bitumen is a product of interaction of unsaturated vegetable oil and gas sulphur. Monoethanolamine or triethanolamine of grade “Б” is used as a component of saponification of triglycerides of fatty acids. Method of producing an adhesive additive involves feeding unsaturated vegetable oil into a heater for heating to a temperature of not more than 100 °C. Heated oil is fed into the mixer together with monoethanolamine or triethanolamine of grade “Б” at 100–120 °C. After 0.5–1.0 hours of stirring, gas sulphur is added and stirring is continued at 100–120 °C for 2 hours. Then the mixture is cooled at room temperature.
EFFECT: wider range of adhesion additives, higher adhesion to mineral material, reduced concentration of the additive in oil road bitumen, simplified technology, reduced power consumption and reduced cost.
2 cl, 2 dwg, 3 ex
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