reducing curing defects with tetramethylimidazolidinediylpropylamine (tmbpa) in automotive seat foams introduction automotive seat foams play a crucial role in vehicle comfort, safety, and durability. polyurethane (pu) foams are widely used in this application due to their excellent cushioning properties, resilience, and cost-effectiveness. however, the production of high-quality pu foams requires careful control of the curing...