Ergon’s modified asphalt composition uses waste tyre pyrolysis oil
A recently granted patent (Publication Number: US11970619B2) discloses a modified asphalt composition that involves combining an asphaltic binder with a reduced-PAH pyrolysed oil fraction. The process includes pyrolysing rubber articles or rubber particles separately to obtain the pyrolysed oil fraction with a specified initial boiling point or flash point, and then removing polycyclic aromatic hydrocarbon (PAH) compounds from the fraction. Various methods such as fractionally distilling, solvent extracting, centrifuging...
