Coloured composition comprising a bituminous binder and uses thereof
AssigneeTotal Raffinage Distribution S.A.
InventorsGuy Lemoine, Jean-Philippe Gillet
Life of this patent
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Abstract
The invention concerns a composition comprising: (1) an asphaltene-free bituminous binder mixture, containing at least a plasticizing agent based on an aliphatic hydrocarbon compound, at least a structuring agent based on a cycloaliphatic hydrocarbon polymer and optionally a first polymer; (2) a coloured pigment; and (3) a second polymer selected among polyolefins, natural and synthetic rubbers and vinyl ethylene acetate copolymer.
Claims20
Asphaltene-free colored composition with a bituminous binder base and a high resistance to light blended as a substitution for bitumens, characterized in that it comprises (1) a mixture of said binder that contains at least a plasticizing agent with an aliphatic hydrocarbon compound base whose number of carbon atoms is greater than or equal to 20, at least a structuring agent with a cycloaliphatic hydrocarbon polymer base, and possibly a first polymer that is compatible with the two previous agents, in proportions such that the ball-ring temperature (TBA) of said binder ranges between 30 and 100° C., (2) a colored pigment, and (3) a second polymer selected among the group consisting of:
- polyolefins such as polyethylene or polypropylene and olefin copolymers,
- natural or synthetic rubbers such as:
- EPDM (ethylene-propylene-diene-monomer),
- EPM (ethylene-propylene-monomer)
- Polyisobutylene,
- Polynorbornene,
- Polychloroprene,
- and vinyl ethylene-acetate copolymer
Colored composition as set forth in one of the previous claims, characterized in that it has a penetrability that ranges between 20 and 300 tenths of a mm (according to NF standard T 66-004).
Colored composition as set forth in one of the previous claims, characterized in that it also contains copolymers of the vinyl ethylene-acetate (EVA) or low density polyethylene type.
Colored composition as set forth in one of the previous claims characterized in that the second polymer is an EPDM used in a quantity that ranges between approximately 10% and 15% by weight of the bituminous binder, and is grafted and reticulated in situ in the latter using a complex formed by a sulfur donor and a silicon organic compound such as silane.
Dependencies are inferred from the claim text.