US 12,215,232 B2
Asphalt compositions including recycled polymer and epoxy-functionalized ethylene copolymer
Cristina Serrat, Lake Jackson, TX (US); Charles J. DuBois, Jr., Lake Jackson, TX (US); Hayley A. Brown, Lake Jackson, TX (US); Jorge C. Gomes, São Paulo (BR); and Renata de Oliveria Pimentel, São Paulo (BR)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/424,351
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016133
§ 371(c)(1), (2) Date Jul. 20, 2021,
PCT Pub. No. WO2020/160423, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/859,505, filed on Jun. 10, 2019.
Claims priority of provisional application 62/799,536, filed on Jan. 31, 2019.
Prior Publication US 2022/0112378 A1, Apr. 14, 2022
Int. Cl. C08L 95/00 (2006.01); E01C 7/26 (2006.01)
CPC C08L 95/00 (2013.01) [E01C 7/265 (2013.01); C08L 2205/03 (2013.01); C08L 2555/34 (2013.01)] 18 Claims
 
1. An asphalt composition comprising:
asphalt binder in about 70 to about 99.5 weight %, based on the total weight of the asphalt composition;
a recycled polymer component in about 0.25 to 20 weight %, based on the total weight of the asphalt composition, wherein the recycled polymer component comprises:
from 51 wt. % to 99.99 wt. % of a linear low density polyethylene, based on the total weight of the recycled polymer component;
a polyamide; and
an ethylene vinyl alcohol; and
an epoxy-functionalized ethylene copolymer in about 0.1 to 10 weight %, based on the total weight of the asphalt composition, the epoxy-functionalized ethylene copolymer having the formula E/X/Y/Z,
wherein E is the copolymer unit —(CH2CH2)— derived from ethylene;
X is the copolymer unit —(CH2CR1R2)—, where R1 is hydrogen, methyl, or ethyl, and R2 is carboalkoxy, acyloxy, or alkoxy of 1 to 10 carbon atoms, present in from 0 to about 40 weight % of the copolymer;
Y is the copolymer unit —(CH2CR3R4)—, where R3 is hydrogen or methyl and R4 is carboglycidoxy or glycidoxy present in from 0.1 to about 25 weight % of the copolymer;
Z is the copolymer unit derived from comonomers including carbon monoxide, sulfur dioxide, acrylonitrile, or other monomers, present from 0 to about 10 weight % of the copolymer.