7.2 Development of Two Approaches for WB UV Clear and Highly Pigmented Coatings
(Room 237-239)
10 Apr 18
9:30 AM
-
10:00 AM
Tracks:
Session 7: Radiation Curing
UV-curable waterborne coatings are drawing more attention due to the combined advantages of UV-curing systems and waterborne coatings, including matting ease, handling efficiency, monomer free, and faster manufacturing throughput among other benefits. Achieving good chemical resistance and physical drying from a waterborne UV system, however, is always a challenge, especially for highly pigmented systems due to the light scattering and absorption during the curing process. In this paper, we will present two new resin approaches to achieve good physical properties for both clear and pigmented coatings. Both approaches provide not only excellent physical drying (rapid water releasing and hardness development) and tack free properties before UV curing, but also good hardness and chemical resistance after curing. In addition, the coatings provide warmth to the wood substrates and excellent adhesion to plastic substrates making them valuable for furniture, cabinet components, and automotive applications.