Ergon has patented a modified asphalt composition using pyrolyzed oil fractions from waste tire pyrolysis. The process involves removing PAH compounds to create a translucent oil fraction that enhances the asphalt binder. GlobalData’s report on Ergon gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Ergon, Sustainable bituminous compositions was a key innovation area identified from patents. Ergon's grant share as of May 2024 was 37%. Grant share is based on the ratio of number of grants to total number of patents.
Modified asphalt composition using waste tire pyrolysis oil
A recently granted patent (Publication Number: US11970619B2) discloses a modified asphalt composition that involves combining an asphaltic binder with a reduced-PAH pyrolyzed oil fraction. The process includes pyrolyzing rubber articles or rubber particles separately to obtain the pyrolyzed oil fraction with specific boiling points and flash points, followed by the removal of polycyclic aromatic hydrocarbon (PAH) compounds from the fraction. Various methods such as fractionally distilling, solvent extracting, centrifuging, or wiped film evaporating are employed to eliminate PAH compounds from the pyrolyzed oil fraction, resulting in a composition with reduced PAH content.
Furthermore, the patent claims specify the characteristics of the modified asphalt composition, including the total PAH content, concentration of specific PAH compounds, carbon black solids content, transparency, flash point, and the percentage of the pyrolyzed oil fraction in the overall composition. The composition may also include synthetic polymers for further modification and can be used in asphalt emulsions for pavement construction or maintenance. Additionally, the patent describes a maintained pavement structure comprising the modified asphalt composition as a pavement maintenance binder, topped with aggregate chips to create a skid-resistant surface. The temperature ranges for the pavement maintenance binder and asphalt emulsion are also detailed, along with the application in asphalt paving mixtures with aggregate.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
