The magnitude of industrial investment in coatings justifies every effort spent on development of more resistant coating materials. The possibility of improving their resistance by substituting so-called pigments with organic corrosion inhibitors has been investigated. Now after months of intensive testing and research, it is believed that a part of future development in paint technology lies in replacing pigments with more effective materials. A number of compounds representing three different groups of organic inhibitors (benzoates, chromates and nitrites) were synthesized in our laboratories, and resulting protective properties of inhibited films studied. It was found that the addition of an effective inhibitor breaks down anodic process, thus displacing the potential of underlying metal by 0.2 ÷ 0.6V in a positive direction. Rosenfeld(1) emphasized the fact that the compatibility of the two substances, the polymer and the inhibitor, is an important condition for achieving an optimal protective ability and retaining physical and mechanical properties of the inhibited polymer. The assumption that the introduction of a similar chemical composition into a composition of a polymer would yield optimal properties, has been experimentally confirmed(2).
