Grant agreement ID:101058449Funded under: HORIZON_HORIZON-CL4-2021-RESILIENCE-01-11 REDONDO will develop reversibly cross-linked polyethylene (rPEX), rendering the up-to-date non-recyclable PEX a recyclable-by-design innovative polymer. Achievement of reversibility will be conducted via two different thermally reversible reactions for PE cross-linking: one based on C-S-S bonds and one exploiting the Diels Alder reaction. The produced rPEX will be characterized and