Low Free TDI Trimer in Solventborne Polyurethane Adhesives: Performance Advantages Introduction Solventborne polyurethane (PU) adhesives are widely employed in various industries, including packaging, automotive, footwear, and construction, owing to their exceptional adhesion strength, flexibility, durability, and resistance to environmental factors. Traditional solventborne PU adhesives often utilize toluene diisocyanate (TDI)-based prepolymers. However, concerns surrounding the toxicity...