Neopentyl glycol diglycidyl ether is widely used as a reactive diluent in epoxy resin formulations. It helps reduce the viscosity of epoxy systems, making them easier to handle and apply, particularly in coatings, adhesives, and composite materials. Its incorporation enhances flexibility and improves the mechanical properties of cured epoxy products, making it suitable for applications requiring durability and resistance to environmental factors. Additionally, it is utilized in the production of electrical insulation materials due to its excellent dielectric properties. The chemical also finds use in the manufacturing of advanced composites for aerospace, automotive, and marine industries, where high performance and lightweight materials are essential.