Abstract
Manufacturing weather-stable powder coatings with a matte surface and consistent quality is a challenge to the powder coatings industry. Technically acceptable results are achieved using the dry blend process, but one-shot formulations based on polyurethane raw materials or the use of a bifunctional polyurethane matte hardener offer interesting alternative solutions. Investigation of the powder coating films using a perthometer and an electron microscope provides a deeper understanding of the matte powder coating systems.
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LS-M/IC Geb. Q 24, D-51368 Leverkusen, Germany, e-mails: Peter.Thometzek.PT1@Bayer-AG.de; Ulrich.Freudenberg.UF@Bayer-AG.de; Hans-Ulrich.Meier-Westhues.HM@Bayer-AG.de.
Industrial Chemicals Division, Coatings, 100 Bayer Rd., Pittsburgh, PA 15205-9741.
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Thometzek, P., Freudenberg, U., Meier-Westhues, U. et al. Weather-stable low-gloss powder coatings. Journal of Coatings Technology 72, 75–79 (2000). https://doi.org/10.1007/BF02698473
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DOI: https://doi.org/10.1007/BF02698473