The use of an adequate dispersant is necessary to achieve good stability and color properties for dispersed pigments in waterborne paint systems. Electrostatic repulsive and steric hindrance forces can be achieved by combining polyelectrolyte dispersants and traditional non-ionic surfactants. Improved stability and behavior can be achieved with new high-molecular-weight dispersants discussed in this article.
New polymeric dispersants are suitable for low-volatile organic compound (VOC) and alkyl phenol ethoxylate (APE)-free pigment dispersions for industrial and ink applications. Compared with traditional polymeric types, the properties are enhanced. These enhanced properties provide excellent color strength development, high pigment loading at low viscosity, improved stability and high gloss development.