Patent ID: 11898039
Assignee: ARKEMA FRANCE
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  Y | IPC C

Claim 15:
16. A process for the preparation of an asphalt mix, comprising mixing together, in any order:
(a) fresh aggregate,
(b) fresh bitumen,
(c) at least one recycled bituminous product containing aged bitumen and reclaimed aggregate, and
(d) at least one surfactant, which surfactant functions as a rejuvenator of the said aged bitumen, and the at least one surfactant is of formula A1:

[A-O—B—]dZ  (A1), wherein:
A is chosen from hydrogen and a group G or, G represents a linear or branched, saturated or unsaturated, C1-C30 hydrocarbon chain, optionally containing at least one aromatic cycle, and optionally substituted by at least one phosphate group,
B represents a bond or a divalent group containing at least one alkylene oxide repeating unit,
d represents 1 or 2, and
Z represents a radical of formula Z1 or Z2:, , wherein R is hydrogen or a linear or branched C1-C6 alkyl, f is 0 or 1 or 2, e is 0 or 1, and d+e+f is 3, provided that when d is 2, then Z is Z1, e is 0 and P is linked to two identical or different groups [A-O—B—], and provided that in the case where d is 1, Z may also represent hydrogen or a group G or, and wherein the fraction of recycled bituminous product(s) represents from about 10 wt % to about 80 wt %, of the total mass of the final asphalt mix, and the fraction of fresh aggregate represents about 5 wt % to about 75 wt % relative to the total mass of the final asphalt mix.