Sometimes known as powder coatings or fusion-bonded epoxies (FBE), these can be formulated using several different curatives including dianhydrides, phenolics or dicyandiamides.
Curing powder coatings with dianhydrides offers superior strength, chemical resistance and dielectric properties in high-heat applications, from automotive and aerospace to pipe coatings for oil and gas transport.
Dianhydrides curatives can enable simple DGEBA resins to achieve superior chemical, dielectric and physical performance, especially in high temperature environments. Dianhydrides are typically a powder, making it easy to incorporate into a dry system. Curing epoxy coating powder formulations with dianhydrides works well whether the coating is formulated for electrostatic spray deposition (ESD) or a fluidized bed process.