Detlef Burgard Marc Herold Dr Detlef Burgard Bühler Partec GmbH T +49 681 394 65 50 Small amounts of nanoparticles as additives can lead to a significant performance increase in one-component waterborne polyurethane coatings, especially in terms of chemical/solvent resistance, blocking resistance drying time and hardness. The increase in performance can be achieved by a non-covalent crosslinking mechanism. There are some first indications that such nanoparticle additives can be a useful alternative to isocyanate crosslinkers in certain applications, enabling increased hardness or faster ...