Resins for Specialty Products

The mechanisms by which organic coatings protect metal surfaces from corrosion have received a significant amount of study in both academia and industry, with significant disagreement over which is of primary importance. Three of the most commonly highlighted film properties influencing corrosion resistance are barrier properties (water and O2 permeability), adhesion, and electrochemical impedance.

1K self-crosslinking water-based acrylics are easy to use and formulate. They are common binders for clear transparent coatings but it is difficult to formulate 1K pigmented topcoats with high chemical resistance. The EPS technical center in The Netherlands has conducted extensive research to identify the interactions that drive chemical resistances in 1K acrylics white pigmented topcoats, the limits of this technology and to understand the influence of substrates and coating cycles on final performance.