Ethylene imine polymer is widely used in the paper industry as a wet-strength additive, enhancing the durability of paper products when exposed to moisture. In water treatment, it serves as a flocculant, aiding in the removal of suspended particles and improving water clarity. The polymer is also employed in the textile industry to improve the dyeability and colorfastness of fabrics. Additionally, it finds application in the production of adhesives and coatings, providing improved bonding and protective properties. Its ability to modify surface properties makes it valuable in various industrial processes requiring enhanced material performance.