	US 11,970,619 B2
	Waste tire-derived asphalt modifier
Gaylon L. Baumgardner, Arkadelphia, AR (US)
Assigned to Ergon, Inc., Flowood, MS (US)
Filed by ERGON, INC., Flowood, MS (US)
Filed on Apr. 10, 2023, as Appl. No. 18/132,782.
Application 18/132,782 is a division of application No. 16/885,919, filed on May 28, 2020, granted, now 11,623,990.
Application 16/885,919 is a continuation of application No. PCT/US2018/063664, filed on Dec. 3, 2018.
Claims priority of provisional application 62/593,868, filed on Dec. 1, 2017.
Prior Publication US 2023/0272220 A1, Aug. 31, 2023
Int. Cl. C08L 95/00 (2006.01); C08L 19/00 (2006.01); C10B 53/07 (2006.01); E01C 7/26 (2006.01)

CPC C08L 95/005 (2013.01) [C08L 19/003 (2013.01); C10B 53/07 (2013.01); E01C 7/265 (2013.01); C08L 2555/22 (2013.01)]

20 Claims

1. A modified asphalt composition, made by combining:

a) an asphaltic binder; and

b) a reduced-PAH pyrolyzed oil fraction made by:

i) at least partially pyrolyzing, separately from such asphaltic binder, whole rubber articles or size-reduced rubber particles to provide a pyrolyzed oil fraction having a selected minimum initial boiling point or flash point, and;

ii) removing at least some polycyclic aromatic hydrocarbon (PAH) compounds from such pyrolyzed oil fraction.