The Impact of Anti-Yellowing Agent Dosage on the Film Properties of Waterborne Polyurethane Coatings Introduction: A Golden Glow or a Faded Future? Waterborne polyurethane (WPU) coatings have surged in popularity over the past two decades, thanks to their low volatile organic compound (VOC) emissions and environmental friendliness. As industries shift toward sustainable practices, WPU has...