Dispersion difficulties are a common issue in solvent-based coating production, often leading to pigment settling, floating, and flooding, which directly impact hiding power, gloss, and durability. Selecting an efficient dispersant to achieve stable pigment dispersion is a core need for many manufacturers.
To address these challenges, Chemi Tech has developed a series of specialized dispersants through years of R&D, offering targeted solutions:
Step 1: Analyze system compatibility
Choose a dispersant structure based on resin type and pigment properties (e.g., polarity, particle size) to ensure anchoring groups fully interact with the pigment surface.
Step 2: Optimize dosage and process
Recommended dosage is 0.2%-2% of pigment weight. Optimize via high-speed dispersion and grinding to achieve lower viscosity and better tinting strength.
Step 3: Evaluate dispersion stability
Verify anti-settling effects through microscopy and storage stability tests (e.g., thermal storage, centrifugation) to prevent agglomeration or flocculation.
Case Study:
A coating manufacturer experienced significant settling and uneven gloss in an alkyd resin black paint. After using Chemi Tech KMK-502 dispersant, pigment uniformity improved, with no sedimentation after two months of storage. Film gloss increased by 25%, and customers reported enhanced leveling during application.
Chemi Tech dispersants offer wetting, dispersion, and stabilization functions, suitable for carbon black, organic, and inorganic pigments, helping you achieve product quality upgrades.