METHODS FOR MODIFYING ASPHALT USING LOW GREENHOUSE GAS LIQUIDS OBTAINED FROM DEPOLYMERIZATION OF WASTE PLASTICS

The present invention relates to environmentally friendly, low greenhouse gas (GHG) liquid asphalt modifiers produced via a thermal depolymerization of solid plastic materials, particularly waste plastic materials, alone or in conjunction with other organic feedstocks, and their use to prepare carbon-efficient asphalt formulations and end-products. The carbon-neutral to carbon-negative liquid additives yield asphalt materials with enhanced performance and tolerance against detrimental effects from aging and temperature, along with a reduced carbon-footprint. The liquid modifiers described herein can be used to modify asphalt binders (bitumen) to provide lower temperature processability and/or improved performance and/or to rejuvenate recycled asphalt pavement (RAP) such that less virgin binder and aggregate needs to be produced and transported when repaving. The invention therefore allows waste plastics to be utilized as a desirable feedstock material and lessens the carbon footprint of the resulting asphalt end-products.


» Number: WO2024020510A2 (A2)

» Publication Date: 25/01/2024

» Applicant: ZHANG XIAOXIAO?[US]

» Inventor: ZHANG XIAOXIAO?[US]

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737


                   




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