Poly(propylene glycol) bis(2-aminopropyl ether) is widely used as a curing agent in epoxy resin systems. Its primary application is in the formulation of adhesives, coatings, and sealants, where it enhances flexibility, durability, and chemical resistance. The compound is also employed in the production of elastomers and composites, contributing to improved mechanical properties and thermal stability. Additionally, it serves as a key component in the synthesis of polyurethane foams, where it acts as a chain extender or crosslinker, providing tailored hardness and elasticity. Its versatility makes it valuable in industries such as construction, automotive, and electronics for creating high-performance materials.