What are the types of dispersants

Dispersants are a commonly used chemical additive widely used in industries such as pigments, coatings, inks, adhesives, etc., to improve the dispersion of pigments and solid particles in solvents. The following are several common dispersants:

Sulfonated dispersants: Sulfonated dispersants are a type of anionic surfactants that often use sulfonic groups as polar groups. They have good dispersion and emulsification properties and can be used for the dispersion and stability of various pigments and solid particles.

Carboxylic acid dispersants: Carboxylic acid dispersants are a type of non ionic or cationic surfactants with carboxylic acid groups as their surface active groups. Carboxylic acid dispersants achieve stable dispersion of pigments by generating adsorption and electrostatic repulsion with the surface of the pigments.

Polymer dispersants PAAS: Polymer dispersants are a type of polymer compound with high molecular weight. They can achieve dispersion stability by adsorbing onto the surface of pigments or solid particles, forming a dispersion layer. Common types of polymer dispersants include polyacrylate, polyethylene ketone, etc.

Fatty alcohol ether type dispersants: Fatty alcohol ether type dispersants are a type of non-ionic surfactants, which contain fatty alcohol groups and ethylene oxide groups in their molecular structure. This type of dispersant usually has good dispersion and wetting properties, and can be used for dispersion and suspension stability of pigments and solid particles.

Epoxy dispersant: Epoxy dispersant is a special type of surfactant with a molecular structure containing epoxy groups. They achieve dispersion stability and particle modification through chemical reactions with pigments or solid particle surfaces.

The above lists some common types of dispersants, and different types of dispersants have differences in chemical structure and dispersion mechanism. In practical applications, it is necessary to select suitable dispersants based on the specific properties of pigments or solid particles and the required dispersion effect. At the same time, relevant usage guidelines and recommendations should be followed to ensure the effectiveness and safety of dispersants.