Presented by allnex
Recorded on December 8th, 2021
Reducing the gloss of fast drying, medium to high solids SB 2K paint systems can be a challenge. Often, high amounts of traditional matting agents are required to effectively matte such systems. In urethane-based systems, the presence of high loadings of acidic matting compounds can lead to retarded drying. This negative effect is even more pronounced in 2K systems based on Michael Addition, which use base catalysts. In addition, it is well known that conventional matte paints suffer from limited paint stability and reduced abrasion and chemical resistance. Final gloss levels may also strongly depend on dry film thickness and applied curing conditions. Furthermore, the handling of solid matting agents often poses HSE-related challenges in a production environment. In this webinar, we will present a newly developed technology to matte 2K paint systems, based on urea crystals present in the binder component. These systems facilitate excellent matting efficiency even at moderate particle loading, and final gloss levels that can be easily controlled across a very broad range. Furthermore, the gloss level is very stable as a function of applied layer thickness and improved mechanical and chemical stability was observed. Paints based on this exciting new technology do not show settling and do not generate dust containment challenges. Examples of different self-matting systems will be discussed and compared to conventionally matted counterparts in terms of matting and overall performance. Also, formulation and appearance aspects will be addressed.
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This webinar is part of a symposium of four webinars to address the topic of low gloss industrial coatings. To see the additional webinars in this series, please click the button below.
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