Mechanism of Powder Coating Colourants
A line of well-designed universal colorants is for both water-based paints and solvent-based alkyd paints, most often for architectural applications. Modern universal paint colorants are solvent-free, water-based materials. The color of the specialty powder coating is done either in the production plant or in the shops where customers buy their paints. These properties may change when other common ingredients such as binders and fillers are added.
It is already complicated to develop a robust line of water-based colorants that is only used to tint water-based paints. A wide range of different specialty powder coating stabilized by using as few as possible additives. Dispersants are polymeric additives used to provide stability against flocculation. Anchoring, strong adsorption of the dispersant molecules at the surface of the pigment particles, is a key to take for all types of colorants.
In the paint colourant itself, the pigment particles repel each other because of steric stabilization provided by water-soluble tails, possibly combined with electrostatic repulsion. The colorant in the water will regulate the stabilization. The hydrophobic tails are insoluble in the aqueous phase. Because of stabilization of water, the tails provide steric stabilization in the nonpolar continuous phase consisting of alkyd resin dissolved in organic solvent.
The following information is necessary to acquire excellent raw materials to use. As our client, we want to deliver the best for you. We, at Teff-Line, are always excited to share our expertise with you. You may call us for further information.