NINGBO INNO PHARMCHEM CO.,LTD. provides Polyethyleneimine (PEI), a fascinating polymer with a unique chemical structure that underpins its diverse industrial applications. With CAS number 9002-98-6, PEI is characterized by its repeating units of amine groups and ethylene spacers, leading to a highly cationic polymer.

The presence of primary, secondary, and tertiary amine groups in branched PEI, or predominantly secondary amines in linear PEI, dictates its reactivity and interaction capabilities. These amine groups are nucleophilic and can readily participate in reactions such as alkylation, acylation, and protonation. This inherent reactivity is key to PEI's function as a wet strength agent in papermaking, where it forms cross-links with cellulose fibers, enhancing paper durability. The effectiveness of polyethyleneimine wet strength agent relies heavily on these chemical interactions.

PEI’s solubility profile is also noteworthy. It is soluble in water and ethanol but insoluble in benzene and acetone. Its aqueous solutions are positively charged, and precipitation occurs with sulfuric acid at a pH below 2.4. These properties are crucial for its application in various processes, including water treatment and as a component in inks and coatings. Understanding the CAS 9002-98-6 chemical properties is vital for optimizing its use.

As a chemical auxiliary and catalyst, PEI's amine groups can act as Lewis bases or nucleophiles, facilitating a range of chemical transformations. Its ability to adsorb onto surfaces and interact with other molecules makes it valuable in applications like dye fixation and as an aldehyde adsorbent. The broad spectrum of polyethyleneimine industrial applications is a direct result of this rich chemical behavior.

For industries looking to harness the power of PEI, sourcing from a reputable supplier like NINGBO INNO PHARMCHEM CO.,LTD. ensures consistent quality and performance. Whether used as a high viscosity liquid PEI or in other forms, its chemical backbone provides a foundation for advanced material science and industrial processes.

By understanding the fundamental chemistry of Polyethyleneimine, manufacturers can better leverage its unique properties to develop innovative products and improve existing processes. The intricate reactivity and solubility characteristics of PEI make it an indispensable chemical asset in modern industry.