Understanding the Causes of Yellowing in Polyurethane Glues and Prevention Methods 🌟 Introduction: The Sticky Situation Polyurethane glue, often hailed as a superhero among adhesives, is widely used across industries—from woodworking to automotive assembly. But even superheroes have their kryptonite. For polyurethane glues, it’s yellowing—a phenomenon that can tarnish both aesthetics and performance. In this...