Ethylene imine polymer is widely used in the paper and textile industries as a wet-strength additive, enhancing the durability of paper products and fabrics when exposed to moisture. It also serves as a flocculating agent in water treatment processes, helping to clarify water by aggregating fine particles for easier removal. In the field of adhesives, it acts as a key component in the formulation of strong, durable bonds for various materials. Additionally, it is utilized in the production of coatings and finishes that provide surfaces with improved resistance to abrasion and chemicals. Its versatility also extends to the agricultural sector, where it is used in the development of controlled-release fertilizers, ensuring a steady supply of nutrients to crops over time.