9309A is a special hyperdispersant for water-based coatings containing a number of pigment affinity groups, which not only has good wettability, but also has excellent anti-settling, anti-flocculation and anti-floating ability. It is suitable for dispersing inorganic pigments, organic pigments and carbon black in water-based systems. It also has excellent viscosity reduction effect, which has excellent dispersion stability effect on various organic pigments and inorganic pigments.It can replace similar imported products. This product has strong versatility, does not affect the water resistance of the paint film. It is suitable for the preparation of water-based universal color paste and has excellent dispersion effect on organic pigments, carbon black and inorganic pigments. It is also suitable for water-based and water-soluble coatings, grinding of color paste containing resin etc.