Introduction Polyurethane (PU) elastomers are a versatile class of polymers renowned for their exceptional mechanical properties, chemical resistance, and broad range of applications. Casting polyurethane elastomers involves reacting a polyol (a polyalcohol containing multiple hydroxyl groups) with an isocyanate in the presence of a catalyst. Traditionally, organotin compounds, particularly dibutyltin dilaurate (DBTDL), have been the...