Ethylene imine polymer is widely used in various industrial applications due to its unique properties. It is commonly employed as a flocculant in water treatment processes, where it helps to aggregate and remove suspended particles, improving water clarity and quality. In the paper industry, it serves as a wet-strength additive, enhancing the durability and strength of paper products when exposed to moisture. The polymer is also utilized in the textile industry as a dye-fixing agent, improving color fastness and reducing dye bleeding during washing. Additionally, it finds application in the production of adhesives and coatings, where it enhances bonding strength and durability. Its ability to modify surfaces makes it valuable in the manufacturing of specialty chemicals and materials.