Eliminating Pigment Agglomeration and Hard Settling with Polymeric Dispersants

In high-solid industrial coatings and high-pigment decorative paints, achieving stable pigment dispersion is essential for product quality. During manufacturing, solid pigments and anti-corrosive fillers are subjected to intense mechanical shear to break up agglomerates. However, once grinding stops, the high surface energy of these tiny particles naturally drives them to re-cluster. This flocculation causes color floating, loss of hiding power, viscosity drift, and severe hard caking at the bottom of storage containers.

Integrating an engineered pigment dispersing agent addresses this problem at the molecular level. Polymeric dispersants feature a dual-function molecular architecture: anchoring groups attach firmly to the pigment particle surface, while long polymer chains extend out into the liquid resin matrix. This structure creates strong steric hindrance and electrostatic repulsion around each particle, preventing pigment solids from colliding and re-agglomerating.

For paint manufacturers, using an optimized pigment dispersing agent improves both production throughput and coating performance. It rapidly wets dry powders, lowers millbase viscosity, and allows higher pigment loading during the grinding phase. This shortens manufacturing cycles, reduces energy consumption, and unlocks the full tinting strength and gloss potential of expensive pigments while guaranteeing long shelf-life stability.

Dispersing agent 5040

Dispersing agent 2513