Poly(propylene glycol) bis(2-aminopropyl ether) is widely used as a curing agent in epoxy resin systems. It enhances the flexibility and impact resistance of the cured epoxy, making it suitable for coatings, adhesives, and composites. In the automotive industry, it is employed in sealants and coatings to improve durability and performance. Additionally, it serves as a key component in polyurethane formulations, contributing to the production of flexible foams, elastomers, and coatings. Its amine functionality also makes it valuable in water treatment applications, where it aids in the removal of contaminants. Furthermore, it is utilized in the synthesis of surfactants and lubricants, providing stability and efficiency in various industrial processes.