What are the effects of dispersants on the water resistance of coatings?

dispersantThe impact on the water resistance of the coating film

Some dispersants require high efficiency by using hydrophilic substances, which remain in the paint film and can lead to a decrease in its water resistance. Solution: Choose hydrophobic or hydrophilic modified dispersants, which can reduce the residual hydrophilic substances in the paint film and help improve the water resistance of the coating.

The Effect of Dispersants on the Rain Scar Resistance of Coatings

As mentioned above, for paint films with poor water resistance, when encountering light rain or foggy weather, a small amount of water adheres to the surface of the paint film. After a long time, hydrophilic substances migrate and accumulate on the surface of the paint film, and the areas they flow through will become strip-shaped high gloss marks after drying. Solution: Use hydrophobic copolymer dispersants to enhance the hydrophobicity of the coating, reduce its water absorption, and effectively prevent the migration of surfactants.