Polyurethane Amine Catalyst PMDETA (PC5): A Comprehensive Analysis of its Strong Blowing Effect in Polyurethane Foam Formulation Abstract: Pentamethyldiethylenetriamine (PMDETA), commonly known as PC5, is a tertiary amine catalyst widely employed in the production of polyurethane (PU) foams. Its strong blowing effect, stemming from its preferential catalysis of the water-isocyanate reaction, contributes significantly to foam...