Epoxy resins are high-performance thermosetting polymers formed from the reaction of epichlorohydrin and bisphenol-A (BPA), which cure into rigid, durable solids when combined with curing agents like amines or anhydrides. Renowned for their exceptional mechanical strength, adhesion, and chemical resistance, epoxy resins are among the most reliable materials for protective coatings, adhesives, and composite structures. With tensile strength in the range of 50–90 MPa, they form tough, rigid bonds that resist solvents, acids, and bases while providing excellent moisture and corrosion protection. Their outstanding electrical insulation properties make them indispensable in electronics and electrical engineering applications. Epoxies are widely used in industrial flooring, marine coatings, aircraft composites, and as adhesives in construction and manufacturing. They offer long service life, withstanding temperatures up to 200°C depending on formulation, though UV resistance requires additional stabilizers. Once cured, epoxy resins are non-meltable and non-recyclable, as they are thermosets, but their durability minimizes replacement needs. Although environmental concerns exist due to BPA content and disposal challenges, epoxy resins remain critical for industries requiring strong, long-lasting protective coatings and structural materials. Their unmatched combination of strength, chemical stability, and adhesion ensures their continued dominance in engineering and protective applications.