1,4-Butanediol diglycidyl ether is widely used as a crosslinking agent in the production of epoxy resins, enhancing their mechanical and thermal properties. It is commonly applied in coatings, adhesives, and composites for industries such as automotive, aerospace, and electronics, where durability and resistance to harsh conditions are essential. Additionally, it serves as a reactive diluent to modify the viscosity of epoxy formulations, improving their processability. In the textile industry, it is utilized for fabric finishing to impart wrinkle resistance and strength. Its ability to form stable bonds also makes it valuable in the synthesis of specialty polymers and in biomedical applications for modifying surfaces of medical devices.