Polyurethane Gel Catalyst: Accelerating Film Formation and Crosslinking in Coatings Abstract: Polyurethane (PU) coatings are widely employed across various industries due to their excellent mechanical properties, chemical resistance, and versatility. However, the curing process, involving isocyanate and polyol reactions, can be time-consuming and temperature-dependent. This article delves into the role of polyurethane gel catalysts in...