Tint pastes for water-based coatings were formulated and the properties were investigated as water-based coatings is being important due to environmental problems of solvent-based coatings. In the rheological behavior, viscosity of intermediate varies...
Tint pastes for water-based coatings were formulated and the properties were investigated as water-based coatings is being important due to environmental problems of solvent-based coatings. In the rheological behavior, viscosity of intermediate varies with respect to increased addition of wetting dispersant. The largest viscosity restitution occured at 8% of wetting dispersant when shear stress was removed, and anionic wetting dispersant yielded excellent restitution of viscosity at removal of shear stress. In terms of rheological behavior with pH, we could get the most stable dispersion at pH 8.5. Rheological behavior regarding to amount of dispersing resin showed the most stable pigmented dispersion at 6wt% of it. Particle size of pigment also affected jetness by variation of workability owing to differences of surface area.