Diallyl Isophthalate is primarily used as a monomer in the production of high-performance polymers and resins. It is particularly valued for its ability to enhance the thermal stability, chemical resistance, and mechanical strength of the resulting materials. These properties make it suitable for applications in the manufacturing of coatings, adhesives, and composite materials, where durability and resistance to harsh environments are critical.

In the electronics industry, it is utilized in the formulation of insulating materials and encapsulants for electronic components, providing protection against heat and chemical exposure. Additionally, it finds use in the aerospace and automotive sectors, where lightweight yet strong materials are essential for structural components. Its versatility also extends to the creation of specialty plastics used in various industrial applications, ensuring long-lasting performance under demanding conditions.