The performance of water-reducible alkyd paints is significantly influenced by pigment particle size, impacting key properties such as adhesion, sag resistance, and overall appearance. This study focuses on optimizing particle size through controlled pigment milling conditions and evaluating its effect on paint performance. Multiple milling trials were conducted using varied bead loads, container sizes, and blade configurations to achieve a target particle size below 10 microns. The Mastersizer Xplorer was used to analyze particle distribution, while adhesion and sag resistance were assessed using tape tests and ASTM standard sag meters. Results demonstrate that finer particle sizes enhance substrate adhesion and reduce sagging, ultimately improving paint consistency and appearance. These findings provide valuable insights for optimizing batch production in industrial coatings.
