Graft polymer and thermoreversibly cross-linked bitumen composition comprising said graft polymer
AssigneesCentre National de la Recherche Scientifique (CNRS), Total Raffinage Marketing
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.
Claims20
A graft polymer GP comprising a polymer main chain P and at least one side graft G linked to the polymer main chain P, the polymer main chain P being obtained from at least one diene unit and the side graft G comprising a branched or linear, saturated hydrocarbon chain, having at least 18 carbon atoms.
A bitumen/polymer composition comprising at least one bitumen and at least one polymer, in which the polymer is a graft polymer comprising a polymer main chain and at least one side graft linked to the polymer main chain, the polymer main chain being obtained from at least one diene unit and the side graft comprising a branched or linear, saturated hydrocarbon chain, having at least 18 carbon atoms.
Dependencies are inferred from the claim text.