Exploring the Application of Butyltin Tris(2-Ethylhexanoate) in Flexible Polyurethane Foams Introduction: A Foaming Affair In the ever-evolving world of polymer chemistry, few materials have enjoyed as much versatility and widespread use as polyurethane (PU). From mattresses to car seats, from insulation panels to shoe soles, polyurethane is everywhere. Among its many forms, flexible polyurethane foam...