Troubleshooting Slow Drying Defects in Polyurethane Coatings: A Focus on Drier Adjustments Abstract: Polyurethane (PU) coatings are widely used across various industries due to their excellent mechanical properties, chemical resistance, and durability. However, slow drying or incomplete curing remains a common defect, impacting productivity and performance. This article provides a comprehensive guide to troubleshooting slow...