High-Molecular Polyacrylate Dispersant HMD-15K (MW 15000)

Yes, combination of low and high MW polyacrylate dispersants is a common formulation technique for complex pigment blends. HMD-5K handles inorganic extenders (TiO2, CaCO3) at low add-on while HMD-15K provides better stabilization for organic pigments in the same grind. The combined dispersant system reduces the total dosage needed compared to using a single dispersant at high levels, which can cause blooming or viscosity problems. Pre-test compatibility as some high-MW/low-MW blends can interact if one is salt-form and the other is acid-form.