How to choose the appropriate water-based color paste?

1. The quality of pigments: The quality of pigments directly affects the light resistance, chemical resistance, and hue of pigments. International Pigment Number (IPN) is an important standard for measuring the quality of pigments, and coating manufacturers should prioritize comparing pigments of the same pigment number when selecting pigments.2. Coloring intensity: Coloring intensity reflects the color concentration, color development performance, and stability of pigment dispersion of the pigment paste. The higher the coloring intensity, the less color paste is required for color matching, thereby reducing the cost of color matching and the impact on coating performance.3. Color difference: The color difference Δ E reflects the color stability and reproducibility of the color paste. The smaller the Δ E value, the more stable and reproducible the color of the color paste.4. Liquidity, viscosity stability, and compatibility with coatings: The fluidity, viscosity stability, and compatibility with coatings of colorants are also important factors to consider when selecting. Poor compatibility may lead to floating color phenomenon, affecting the coating effect.5. Environmental friendliness and economy: For interior wall coatings, one can choose colorants with slightly lower weather resistance but better environmental friendliness, avoid using colorants containing heavy metals such as chrome yellow, and prioritize environmentally friendly colorants such as azo and amine.