METHOD OF OBTAINING AN ADHESIVE BITUMINOUS ADDITIVE Russian patent published in 2008 - IPC C08L95/00 C04B26/26 C07C231/00 

FIELD: chemistry.

SUBSTANCE: invention pertains to the field of obtaining bitumen component mixtures, used in any type of road construction, for putting road surfaces, patching repair, obtaining cold asphalt and for other types of road repair and construction works. A bituminous additive is obtained for modification of road bitumen through synthesis, at a high temperature, of polyethylenepolyamine and a fatty component. The fatty component used is an organic substance or a mixture of organic substances, with an acid number not less than 40 mg KOH/1 g. The content of the fatty component in the raw material has a percentage mass ratio of 60±5%. The synthesis product is diluted by the primary fatty component of the additive with percentage mass ratio of 20-40%, with obtaining of a cationic additive. To obtain a dual action bituminous additive, the synthesis product is diluted in the primary fatty component with percentage mass ratio of 45-50%. To obtain an anionic additive, the synthesis product is diluted in the fatty component with percentage mass ratio of 50-90%.

EFFECT: wider range of primary products, suitable for production of bituminous additives without loss of quality; lower production costs with simultaneous improvement of safety during production and use.

2 cl, 9 ex