Thin-layer technology in organic coatings

Organic coatings of a thickness between a few micrometers and some tenths of nanometers are not very common in paint and coatings technology. Thin and very thin layers of polymeric binders, however, may increase wet adhesion of organic coating systems by orders of magnitude. This increase is explained by cooperative and conformative mechanisms of bonding. Though good wet adhesion is a pre-requirement for protection against corrosion, it does not always improve also the resistance against underrusting. This apparent contradiction may be explained by molecular chain segments being too spacious to adsorb in gaps and fissures of the metal surface.