Automotive Refinish Dispersion Solutions

Automotive refinish paints require specialized dispersants to achieve color stability, excellent gloss, and smooth film formation. Here are some key characteristics and potential solutions for dispersants in this application:

Color Development and Stability: Dispersants for automotive refinish paints should facilitate high pigment loading, stability against flocculation, and maintain color accuracy across varied environmental conditions. Solutions include high-molecular-weight dispersants that create a steric barrier around pigments, ensuring color consistency and stability.

Gloss and Flow: Ensuring a smooth finish with high gloss is essential in automotive applications. Non-silicone-based dispersants that enhance pigment dispersion without impacting the flow and leveling properties are ideal. Polymeric dispersants with tailored chain lengths can improve film smoothness and enhance gloss.

UV Stability: Since automotive refinish coatings are exposed to UV light, dispersants with resistance to photodegradation help maintain the paint’s appearance over time.

Compatibility with Solvent and Water-Based Systems: Depending on the system, solvent-based or water-based dispersants can be chosen. Solvent-based systems often benefit from acrylic and polyester-based dispersants, while water-based systems work well with surfactant-stabilized or acrylic-polyurethane dispersants.

For specific products, additives like Tego 2870 may offer good compatibility with common solvents and resins in automotive refinish applications, while dispersants from brands such as BYK and Evonik are also formulated to meet the high-performance standards of automotive refinish coatings.