Triglycidyl isocyanurate is widely used as a reactive diluent in epoxy resin systems. It reduces viscosity without sacrificing performance, making it easier to process and apply in coatings, adhesives, and composite materials. Due to its trifunctional epoxy structure, it enhances crosslinking density, which improves thermal stability, chemical resistance, and mechanical strength of the cured resin. It is especially valuable in high-performance applications such as electrical encapsulation, printed circuit boards, and aerospace composites. Its ability to maintain reactivity at lower temperatures also makes it suitable for cold-cure formulations. Additionally, it is used to improve toughness and adhesion in powder coatings and UV-curable systems.