Abstract
Metals and their alloys offer high strength and outstanding mechanical properties. When exposed to corrosive conditions metals corrode first creating minor aesthetic problems then with time and further corrosion significant damage and a loss of service life. Corrosion has a demonstrated economic impact on all modern societies. Often multi-layer anticorrosion coatings systems protect the metal from corrosion. These systems usually consist of, at a minimum, a primer and a top coat. Each layer is often derived from a different chemistry to achieve different system objectives. The application of multiple layers increases the cost and complexity of the job. Variables such as dry time, individual layer film thickness, recoat window, equipment and work area changeover all create additional complexity.
To simplify this process a new very high solid solvent borne acrylic technology has been developed. This technology is capable of delivering a high level of corrosion protection while also giving strong adhesion to a large variety of substrates under adverse conditions. Utilizing these key features, this technology can be used for Direct-to-Metal coatings (DTM). The new development is useful in coatings below 250 g/l of volatile organic compound (VOC). In this paper, the mechanisms and fundamentals used to develop the technology will be presented along with the properties achieved.
