	US 11,814,506 B2
	Modified asphalts with enhanced rheological properties and associated methods
Cristian Clopotel, Findlay, OH (US); Donald Siler, Findlay, OH (US); and Brian Wilt, Findlay, OH (US)
Assigned to MARATHON PETROLEUM COMPANY LP, Findlay, OH (US)
Filed by MARATHON PETROLEUM COMPANY LP, Findlay, OH (US)
Filed on Jun. 26, 2020, as Appl. No. 16/913,605.
Claims priority of provisional application 62/869,750, filed on Jul. 2, 2019.
Prior Publication US 2021/0002484 A1, Jan. 7, 2021
Int. Cl. C08L 95/00 (2006.01); C08L 9/08 (2006.01); C08L 25/10 (2006.01); C08K 11/00 (2006.01); C08J 3/20 (2006.01)

CPC C08L 95/00 (2013.01) [C08K 11/005 (2013.01); C08L 9/08 (2013.01); C08L 25/10 (2013.01); C08J 3/20 (2013.01); C08L 2555/52 (2013.01); C08L 2555/74 (2013.01); C08L 2555/86 (2013.01)]

20 Claims

1. A modified asphalt binder comprising an asphalt binder, a solvent deasphalted pitch, and a polymeric material, the modified asphalt binder having two or more of:

a viscosity of from about 1900 poise to about 3000 poise at 60° C. (140° F.),

a G*/sin delta value in excess of 1.0 kPa at temperatures ranging from 64° C. to 67° C.,

a non-recoverable creep compliance 3.2 kPa (J_nr3.2) value of <4.5 kPa⁻¹at 64° C. and/or at 67° C.,

a penetration of from about 45 to about 77 dmm at 25° C., where dmm represents 0.1 mm of penetration as measured with a penetrometer under ASTM D5, or

a softening point greater than about 50° C.