Glycidyl propargyl ether is primarily used as a reactive diluent and crosslinking agent in the production of epoxy resins. Its ability to introduce propargyl groups into polymer chains enhances the thermal stability and mechanical properties of the final materials. This chemical is also employed in the synthesis of specialty polymers, where it acts as a building block to create materials with tailored properties, such as improved adhesion, flexibility, and resistance to chemicals. Additionally, it finds applications in the development of coatings, adhesives, and composites, particularly in industries requiring high-performance materials, such as aerospace, electronics, and automotive sectors. Its dual functionality—epoxy and propargyl groups—makes it a versatile component in advanced material science.