
Making sure white stays white
Even professionals have experienced this: you paint a wooden surface white, and after a while a brownish-yellow colour shade starts to show through. Even with a second paint coat. The new SÜDWEST KATIOTECH lacquers reduce unsightly discolouration and provide a reliable barrier effect against discolouration-causing ingredients from the substrate. This creates an even, opaque finish.
A trio for a wide range of substrate
Discolouration mainly affects wooden surfaces, but SÜDWEST KATIOTECH lacquers are also suitable for other substrates where a good adhesive bond and a versatile finish are important, such as plastics or non-ferrous heavy metals. A priming coat and two finishing lacquers are available.

The primer is suitable for interior and exterior wooden substrates and can also be used as a strong adhesion promoter on plastics or non-ferrous heavy metals indoors. These surfaces can then be overcoated with other finishing lacquers without any discolouration.
Properties

The matt SÜDWEST KATIOTECH Deckenlack was developed for interior surfaces that are only rarely exposed to mechanical stress, e.g. wooden ceilings or panels, but also any other materials. Designed as a one-pot system, the first coat of the product serves as a primer and the second as a finishing lacquer.
Properties

The ideal choice for surfaces subject to mechanical wear or frequent cleaning, e.g. doors or cladding. The lacquer provides a mid sheen, robust finish on a wide range of substrates. The product is a one-pot system: it allows both the priming coat and finishing lacquer to be applied in two paint coats.
Properties

Background information
How does discolouration occur?
The binders in conventional lacquers and colours can leach ingredients from the substrate, such as organic wood components, nicotine or soot. These can appear on the surface as unwanted discolouration during the drying process. This process may repeat itself with the second paint coat, and discolouration may show through again.
The pH value as a solution
The water-based SÜDWEST KATIOTECH lacquers use so-called cationic binders with positively charged ions. Their pH value is therefore below 7, in the slightly acidic range. As a result, the discolouration-causing ingredients are either not dissolved at all or only to a very limited extent, and are incorporated into the first coat of varnish as it dries. The second paint coat ensures an even, opaque finish.
