Bismuth-Based Polyurethane Coating Drier Catalysts for Non-Yellowing Clear Finishes: A Comprehensive Review Abstract: The pursuit of high-performance, environmentally conscious coating formulations has driven significant research into alternatives to traditional metal-based driers, particularly in clear polyurethane finishes. This article provides a comprehensive overview of bismuth-based compounds as effective drier catalysts for polyurethane coatings, focusing on their...