Enhancing Fire Retardancy in Polyurethane Foams with Reactive Low-Odor Amine Catalyst ZR-70 Introduction Polyurethane foams are ubiquitous in modern life, from cushioning in furniture to insulation in buildings. However, their flammability has long been a concern, leading to significant research into improving their fire retardancy. Traditional methods often involve adding flame retardants, which can be...