Methacrylation of the obtained diol following a reported procedure then leads to the synthesis of the dimethacrylate crosslinker (DME). The reaction scheme of the upcycling procedure and subsequent functionalization of the product is shown in Figure . Increasing the temperatures further did not significantly impact the reaction speed. The reaction conditions are comparable to those of PET aminolysis, which progresses with ethanolamine at 150 °C. The reaction was followed by a simple work-up procedure in which the ethanolamine could be distilled off and N-LEA was extracted from the highly viscous residue. The obtained product was confirmed by NMR spectroscopy (Figure ). The distilled ethanolamine can be reused for further aminolysis reactions, mitigating any concerns that the use of an excess amount would otherwise raise from a green chemistry standpoint. The upcycled N-LEA was used to re-synthesize the crosslinker (DME) by methacrylation and the successful reaction was confirmed by NMR spectroscopy (Figure ).