ASPHALT BINDER Russian patent published in 2012 - IPC C08L95/00 

FIELD: chemistry.

SUBSTANCE: invention relates to petrochemistry and specifically to asphalt binder, and can be used in making asphalt concrete for road construction works. The asphalt binder contains bitumen, low-oxidised atactic polypropylene and further contains esterified silica of formula where R - CH₃ or C₂H₅ or i-C₃H₇. The binder is obtained with the following ratio of components, wt %: bitumen 90.0-99.0; low-oxidised atactic polypropylene 0.5-5.0; said esterified silica 0.5-5.0.

EFFECT: obtained asphalt binder ensures high operational characteristics of asphalt concrete, such as high strength and low water saturation.

4 tbl, 18 ex