EXOdis PC540 is an anionic polymer dispersant of hydrophobic nature, intended for paint products. It is provided in the form of a clear or lightly murky 25% aqueous solution of sodium salt, having light yellow colour. In comparison with other dispersants of hydrophobic nature, EXOdis PC540 has similar dispersing properties, in particular with respect to titanium white and mineral fillers.
The application of EXOdis PC540 allows to efficiently introduce pigment into the system by significantly decreasing the viscosity of aqueous suspensions of titanium white and mineral fillers. The product is a basic dispersant for both waterborne decorative paints and anticorrosive paints in urban environments. Even small concentrations of EXOdis PC540 give paint products very good stability.
Hydrophobic groups present in the product allow to significantly improve water resistance of paint products. The application of the dispersant in the formulation of decorative paints, instead of usual polyacrylic acid sodium salts, allows to improve resistance of the product to wet scrubbing. Therefore, it is possible to obtain a better abrasion class without the necessity to increase the amount of adhesive material or titanium white.
Additionally, hydrophobic properties of the product have a positive effect on increasing its resistance to atmospheric conditions and corrosives, making the product suitable also for facade paints and anticorrosive coats.
Being the main dispersant in white paints, EXOdis PC540 is compatible with acrylic, styrene-acrylic and vinyl-acrylic dispersions as well as with vinyl acetate widely used in the sector of paints and varnishes. The product is also compatible with the commonly used rheology modifiers, such as cellulose derivatives or polyurethane-based compounds.
Recommended level of use: 0.1 – 1.5% (w/w).