Polyurethane Foaming Catalysts in Viscoelastic Slow Recovery Memory Foam: A Comprehensive Review Abstract: Viscoelastic slow recovery memory foam, a ubiquitous material in bedding, cushioning, and automotive applications, relies on a complex interplay of chemical reactions during its manufacture. Polyurethane (PU) foaming catalysts are pivotal components in controlling these reactions, dictating foam properties such as density,...