What is contained in an epoxy primer?

An epoxy primer is a type of coating that includes both epoxy resin and a hardener. This combination is essential because the hardener is necessary to initiate the chemical reaction that causes the epoxy resin to cure and harden when applied to a surface. This curing process results in a durable and corrosion-resistant finish, making epoxy primers particularly suitable for applications where strong adhesion and chemical resistance are required, such as on metal surfaces or for automotive refinishing.

The other options do not accurately represent the composition of an epoxy primer. For instance, having only epoxy resin would mean the primer would not cure properly without the hardener, while paint solvents and water do not form the necessary chemical bond required in an epoxy primer. Additionally, primers and colorants refer to different components typically found in various types of primers but do not specifically pertain to the definition and formulation of an epoxy primer. Thus, the correct answer encapsulates the essential components that allow epoxy primers to perform their intended function effectively.