associative thickener
As shown in Figure 1, an associative thickener is a polymer with a molecular weight of several thousand to tens of thousands consisting of a hydrophobic part and a hydrophilic part. Associative thickeners have a thickening effect on aqueous target liquids dispersed with hydrophobic substances such as resin emulsions and latexes. The thickening mechanism is shown in Figure 1. The hydrophobic part of the thickener associates with itself and hydrophobic substances such as resins through hydrophobic interactions to form a network structure to thicken the target liquid. The properties of associative thickeners are greatly changed by this associative group, the stronger the associative force, the higher the viscosity. Considered calm.
We have associative thickeners with different associative groups to develop the desired rheological properties.
The associated viscoelastic modifier is a surfactant with hydrophobic groups at both ends as in (a), and the hydrophobic groups other than the molecular hydrophobic groups associated with the particles are other particles or other particles, and when encountering hydrophobic groups New associations will be created. If a sufficient amount of the associative viscoelastic modifier is present, micelles are formed at each point, and a network structure is formed overall as shown in (b).
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