ASPHALT MODIFIERS FOR USE IN "WARM MIXTURES" CONTAINING ADHESION PROMOTER Russian patent published in 2012 - IPC C08L95/00 C08K3/20 E01C7/00 

FIELD: chemistry.

SUBSTANCE: invention relates to an additive complex for compositions of warm asphalt mixtures for road surface coating. Said additive complex contains a) a surfactant component and b) an asphalt rheology modifying component. The surfactant component contains at least one amine and/or modified amine surfactant or mixtures thereof. The asphalt rheology modifying component contains at least one of the following components: i) wax component selected from plant, animal, mineral or petroleum wax, ii) a resinous component which includes plant resin, petroleum resin or mixtures thereof. The additive complex is in form of powder, pelleted or flaky freely flowing solid substance. The invention also relates to a warm asphalt mixture which contains a mixture of bitumen, aggregates and 0.2-10 wt % said additive complex, and a road coating made from said warm asphalt mixture.

EFFECT: warm asphalt mixture has improved packing at lower temperatures, good adhesion properties and water-resistance.

21 cl, 5 tbl, 2 ex