Polyethyleneimine (PEI) is a synthetic polymer characterized by its polycationic structure and a high density of reactive amino groups, making it exceptionally versatile across a multitude of industrial and scientific sectors. As a leading provider of specialty chemicals, understanding the nuances of PEI—from its molecular properties to its practical applications—is key for our clients. This article aims to provide an overview of branched Polyethyleneimine (PEI), its crucial role in various industries, and the advantages of sourcing this vital chemical from our manufacturing base in China.

Branched PEI, identified by CAS number 9002-98-6, is typically supplied as a colorless, viscous liquid. Its molecular structure, containing primary, secondary, and tertiary amine groups, imparts unique chemical reactivity and strong adsorptive capabilities. These properties allow PEI to interact with negatively charged molecules and surfaces through electrostatic attraction, hydrogen bonding, and covalent bonding. For researchers and procurement specialists, recognizing these attributes is fundamental to selecting PEI for specific applications.

The utility of PEI spans several key industries. In papermaking, it acts as an effective wet strength agent, retention aid, and dehydration enhancer, leading to improved paper quality and production efficiency. Its adsorptive properties also make it invaluable in inks, coatings, and binders, where it improves adhesion and film integrity. Furthermore, its high cationic charge density makes it a potent agent for water treatment and electroplating, capable of neutralizing anionic substances and chelating heavy metal ions. For those looking to buy chemical intermediates with such broad applicability, PEI is a prime candidate.

As a manufacturer and supplier based in China, we are strategically positioned to offer PEI at competitive prices and with consistent quality. Our commitment to rigorous quality control ensures that each batch meets the specified purity and performance standards. We understand that a stable and reliable supply chain is critical for our customers' operations. Therefore, we provide flexible packaging options and efficient global shipping, ensuring that your procurement needs are met seamlessly.

We encourage R&D scientists, product formulators, and procurement managers to explore the benefits of integrating branched Polyethyleneimine into their processes. Whether you are looking to enhance paper strength, improve coating performance, purify water, or synthesize novel materials, PEI offers a powerful solution. Contact us today to learn more about our Polyethyleneimine products, request a quote, and secure a reliable supply partner.