| abstract |
The invention discloses a preparation method of a dispersing agent. The preparation method comprises the following steps of: carrying out free radical polymerization reaction onto a lipophilic monomer (A), a functional adsorption monomer (B), a hydrophilic monomer (C) and molecular weight regulator in a solvent after initiating by virtue of an initiator; removing the solvent after the free radical polymerization reaction is finished, adjusting the pH value to 7.0-10.0 by using inorganic alkali to prepare the dispersing agent. The dispersing agent, which is synthesized by the lipophilic monomer (A), the functional adsorption monomer (B) and the hydrophilic monomer (C), is insoluble in water, however, the dispersing agent can be converted into a salt form, so that the product has the advantages of good water-solubility, good dispersion and good dispersion stability. |