Waterborne coatings usually contain max. 5% solvent and are therefore the lowest emission coating systems, along with UV coatings. There are 1K coatings and 2K systems, which are crosslinked using a polyurethane hardener. The latter are often equivalent to 2K solvent-based coatings in terms of durability. The solid content is generally higher than that of conventional solvent-based coatings. However, the so-called grain accentuation is not as pronounced with waterborne coatings as with solvent-based coatings.
Waterborne coating systems also provide significant advantages:
The devices can simply be cleaned with water during processing.
Hardly any odour.
No flash point, therefore no EX protection required for spraying devices.
Easy storage, no A1 storage required.
No special transportation regulations as they are not hazardous goods, only compliance with frost sensitivity requirements.