US 12,459,867 B2
Asphalt material
Monica Galvan, Ferrara (IT); Claudio Cavalieri, Ferrara (IT); Gisella Biondini, Ferrara (IT); and Vincent Baudier, Ferrara (IT)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/914,729
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Apr. 19, 2021, PCT No. PCT/EP2021/060037
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2021/213962, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 20170498 (EP), filed on Apr. 21, 2020.
Prior Publication US 2023/0348327 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C04B 26/26 (2006.01); C04B 24/26 (2006.01); E01C 7/26 (2006.01); C04B 111/00 (2006.01)
CPC C04B 26/26 (2013.01) [C04B 24/2611 (2013.01); E01C 7/26 (2013.01); C04B 2111/00586 (2013.01)] 15 Claims
 
1. An asphalt product comprising:
Z1) from 90 wt. % to 98 wt. % of mineral aggregate; and
Z2) from 2 wt. % to 10 wt. % of a bitumen composition comprising
T1) from 99 wt. % to 75 wt. % of bitumen, and
T2) from 1 wt. % to 25 wt. % of a polymer composition comprising:
A) 5-35% by weight of a propylene ethylene copolymer containing 15% by weight or less of a fraction soluble in xylene at 25° C. (XSA), the amount of the fraction XSA being referred to the weight of A); and from 0.5 wt. % to 7.0 wt. % of ethylene derived units;
B) 20-50% by weight of an ethylene homopolymer having 5% by weight or less of a fraction soluble in xylene at 25° C. (XSB) referred to the weight of B); and
C) 30-60% by weight of a terpolymer of ethylene, propylene and 1-butene derived units and containing from 45% to 65% by weight of ethylene units; and from 15% to 38% by weight of 1-butene units; and containing from 30% to 85% by weight of a fraction soluble in xylene at 25° C. (XSC), the amount of ethylene units, 1-butene units, and the fraction XSC being referred to the weight of C);
the amounts of A), B) and C) being referred to the total weight of A)+B)+C), the sum of the amount of A)+B)+C) being 100 wt. %; the amounts, wt. %, of T1+T2 being 100 wt. %.