It is a 100% active polymeric dispersant specially designed for offset ink and pigment dispersion. For organic and inorganic pigment surface treatment. Improve the dispersibility, color strength and solvent-resistance of the pigment, in the meantime, improve the mobility and the tinctorial effect. For offset ink application, increase the mobility and gloss of the ink; for benzene-type gravure printing ink application, decrease the viscosity of the ink, increase the dispersion stability and solvent-resistance of the pigment, in the meantime, improve the tinctorial effect.