Synthesis of Polyurethanes Through the Oxidative Decarboxylation of Oxamic Acids: a New Gateway Toward Self-blown Foams
Quentin Jaussaud,
Ikechukwu Martin Ogbu,
Govind Goroba Pawar
et al.
Abstract:Polyurethane (PU) thermoplastics and thermosets were prepared through the step-growth polymerization of in situ generated polyisocyanates through the decarboxylation of polyoxamic acids, in the presence of phenyliodine diacetate (PIDA), and polyols. The CO2 produced during the reaction allowed the access to self-blown polyurethane foams through an endogenous chemical blowing. The acetic acid released from ligand exchange at the iodine center was also shown to accelerate the polymerization reaction, avoiding th… Show more
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