Evonik launches deaerator for UV-curing wood coatings
Evonik's Coating Additives Business Line has added a new deaerator to its portfolio. The additive Tego Airex 923 was specially developed for radiation-cured wood coatings and consists of 100 percent active organic polymer.
UV-curing coatings offer many advantages: they are environmentally friendly, can be used almost universally, and can be applied very quickly and efficiently. However, there are also problems with foaming in this type of coating system. Depending on the specific formulation properties and areas of application, Evonik offers defoamers and deaerators with different application profiles. With Tego Airex 923, Evonik is supplementing its range with an effective deaerator for radiation-curing wood and furniture coatings. The additive breaks down foam quickly and efficiently and prevents the formation of air pockets and pinholes. This is especially important in formulations with high viscosity or high solids content.
The concentrate also offers excellent compatibility. It can be combined with various binders and other formulation components. Due to the polymeric nature and good compatibility of the product, formulations can be easily overcoated with Tego Airex 923. This makes it suitable for clear coats with the highest optical requirements. Foam in wood coatings can lead to a loss of transparency and protection. It can also have a negative impact on visual appearance, feel and even production efficiency. Tego Airex 923 solves all of these problems, according to the manufacturer. The deaerator exhibits good flow characteristics, making it easy to process. In addition, it can be stored for longer periods without losing performance.