In the production process of our coatings, pigment dispersion is a very important production link, which is directly related to the storage, construction, appearance and performance of the paint film, so the reasonable selection of dispersants is a very important production link. However, the dispersion of the coating slurry is not only related to the dispersant, but also to the formulation of the coating and the choice of raw materials. The dispersant, as the name suggests, is to reasonably disperse various powders in a solvent, and through a certain charge repulsion principle or polymer steric hindrance effect, various solids are stably suspended in the solvent (or dispersion).