Enhancing Reaction Selectivity with Trimethylaminoethyl Piperazine Amine Catalyst in Rigid Foam Manufacturing Abstract Rigid polyurethane (PU) foams are widely used in insulation, construction, and packaging due to their excellent thermal insulation properties, lightweight nature, and cost-effectiveness. The manufacturing process involves a complex interplay of reactions, primarily the urethane (polymerization) and blowing (expansion) reactions. Achieving...