Thermoreversibly crosslinked bitumen/polymer composition
AssigneesTotal Raffinage Marketing, Centre National de la Recherche Scientifique (CNRS)
InventorsPierre Chaverot, Charlotte Godivier, Ludwik Leibler, Ilias Iliopoulos, Amanda Kathryn Leach
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Abstract
The disclosure relates to a bitumen/polymer composition comprising at least one bitumen and at least one graft polymer, the grafts enabling the bitumen/polymer compositions to be thermoreversibly cross-linked. The disclosure also relates to the use of said bitumen/polymer compositions in fields of application relating to roads, especially in the production of asphalt binders, and in industrial fields of application. The disclosure further relates to the method for producing said thermoreversibly cross-linked bitumen/polymer compositions.
Claims15
A bitumen/polymer composition comprising at least one bitumen and at least one graft polymer comprising:
- a polymer main chain resulting from the polymerization of butadiene units and styrene units and;
- at least one side graft linked to the polymer main chain, the graft comprising a branched or linear, saturated hydrocarbon chain, having at least 18 carbon atoms, the graft polymer being obtained by reaction between at least one double bond of polymer and a thiol function of the graft.
Dependencies are inferred from the claim text.