THERMOREVERSIBLY CROSSLINKED BITUMEN-POLYMER COMPOSITION Russian patent published in 2013 - IPC C08C19/20 C08C19/22 C08C19/24 C08C19/04 C08F8/06 C08F8/32 C08F8/34 C08L95/00 C08L53/02 

FIELD: chemistry.

SUBSTANCE: composition contains at least one bitumen and at least one graft polymer, having a polymer backbone chain and at least one side graft component linked to the polymer backbone chain. Said graft component has a branched or straight saturated hydrocarbon chain having 18-110 carbon atoms. The graft polymer is obtained by reacting at least one double bond of the polymer and a thiol group of the graft component, where the polymer is obtained by copolymerisation of diene monomers. The invention also relates to a method of preparing such thermoreversibly crosslinked bitumen-polymer compositions, as well as use of such compositions in road construction, particularly for producing binding materials for roads, and in different industries.

EFFECT: bitumen-polymer compositions have, at operating temperatures, properties of bitumen-polymer compositions which are irreversibly cross-linked, particularly in terms of elasticity and stickiness, and have low viscosity at treatment temperatures.

17 cl, 1 tbl, 4 ex