Pigment dispersant

Pigment dispersant PAA is a chemical substance used for pigment dispersion and stabilization, which can help pigments disperse evenly in solvents or media and prevent pigment precipitation or coagulation. The selection of pigment dispersants depends on the properties of the pigment, solvent system, and application requirements.

Common pigment dispersants include:

Surfactants: Surfactants are one of the most commonly used pigment dispersants, with hydrophilic and hydrophobic groups that can form micelle structures between pigments and solvents, allowing pigments to disperse in solvents. Common surfactants include anionic surfactants (such as sulfates, sulfonates), cationic surfactants (such as hexadecyltrimethylammonium chloride), and non ionic surfactants (such as polyoxyethylene alcohol).

Dispersant polymer: Dispersant polymer is a type of compound with high molecular weight that can disperse pigments by adsorbing onto the surface of the pigment or forming a complex. These polymers can be natural polymers (such as colloids, natural resins) or synthetic polymers (such as polyvinyl alcohol, polyacrylate).

Chelating agents: Some chelating agents can also be used as pigment dispersants, forming complexes with metal ions on the surface of pigments to prevent pigment condensation. Common chelating agents include ethylenediaminetetraacetic acid (EDTA), nitroso diacetic acid (NTA), etc.

Dispersant aids: Dispersant aids are a type of auxiliary chemical substance that can enhance the dispersion effect of other dispersants. For example, organic solvents, acid-base modifiers, antioxidants, etc. can all affect the dispersion performance of pigments to a certain extent.

It should be noted that selecting a suitable pigment dispersant requires consideration of the type of pigment, solvent system, and application requirements. In addition, corresponding safety operating procedures should be followed during use, and dose control should