Covalent Adaptable Networks through Dynamic ,-Acetal Chemistry: Toward Recyclable CO-Based Thermosets.

Finding new chemistry platforms for easily recyclable polymers has become a key challenge to face environmental concerns and the growing plastics demand. Here, we report a dynamic chemistry between CO-sourced alkylidene oxazolidones and thiols, delivering circular non-isocyanate polyurethane networks embedding ,-acetal bonds. The production of oxazolidone monomers from CO is facile and scalable starting from cheap reagents.