Poly(propylene glycol) diglycidyl ether is widely used as a reactive diluent in epoxy resin formulations. It helps to reduce the viscosity of epoxy systems, making them easier to handle and apply, particularly in coatings, adhesives, and composites. Its flexible polypropylene glycol backbone imparts improved toughness and flexibility to cured epoxy products, making it suitable for applications requiring durability and resistance to mechanical stress. Additionally, it is employed in the production of sealants and elastomers, where its epoxy functionality enables cross-linking, enhancing chemical resistance and thermal stability. In the electronics industry, it is used in encapsulants and potting compounds to protect sensitive components from environmental factors. Its compatibility with various curing agents and polymers makes it a versatile component in advanced material science applications.