The matting of powder coatings constitutes a particular
challenge for the coating industry. In contrast to liquid coatings, only minimum
shrinkage occurs during the baking process, meaning that conventional matting is
not possible with powder coatings.
In order to achieve a matt finish, it is possible to reduce the gloss by mixing various
binders that are incompatible with each other; alternatively, the incompatibility of
binders and special hardeners is used for matting. However, some hardeners are
subject to labeling. This ultimately results in labeling of the powder coatings.
By contrast, the new BYK-3938 P represents a fully new approach, offering an
extremely user friendly, label-free alternative for the matting of powder coatings.
The additive is available in powder form and can easily be added to the finished
powder coating in the pre-defined quantity.
The degree of gloss reduction depends on the dosage. The use of BYK-3938 P
therefore makes it possible to cover a wide range of applications according to
individual requirements, from a few gloss units for adjustment during quality control
through to deep-matt surfaces for decorative applications.