Polyurethane corrosion inhibitor

Polyurethane (PU) is a widely used polymer material in many sectors. It has a high industrial value for metal corrosion protection as a coating material. Recently, it has also been considered an inhibitor to protect the metal's inner surface from corrosion in different corrosive mediums. The corrosion can be suppressed by using the proper content of PU inhibitor. The key advantage of this inhibitor is its ability to anchor certain protective functional groups onto the metal surface. The anchoring of functional groups onto the surface is not opposed in the presence of a highly corrosive medium. Thus, the PU is recently considered an immerging inhibitor in the industry. This chapter provides the synthesis, properties, and performance of PU as a corrosion inhibitor in the corrosive medium.