Polyethyleneimine (PEI) CAS 9002-98-6 Branched & Linear PEI Manufacturer China


Polyethyleneimine (PEI, CAS 9002-98-6) is a high-molecular-weight organic amine compound containing numerous primary, secondary, and tertiary amine groups within its molecular chain, exhibiting extremely high cationic density and reactivity. Based on its molecular structure, polyethyleneimine is classified into two types: linear (L-PEI) and branched (B-PEI), each suitable for different industrial and scientific applications.

PEI is widely used in papermaking, textiles, wastewater treatment, metal chelation, coating dispersion, gene transfer vectors, and nanomaterial surface modification. It is a functional polymer material with extremely wide applications.

Paper Industry: Used as a wet and dry strength agent to improve paper strength and durability

Water Treatment: Cationic flocculant for removing suspended solids, heavy metals, and oil

Textile Industry: Improves dye adsorption and color fastness

Metal Chelation and Anticorrosion: Forms stable complexes with heavy metal ions

Coatings and Dispersions: Used as a dispersion stabilizer and adhesion promoter

Biotechnology: Gene transfection reagents, DNA/RNA carriers

Nanomaterial Modification: Improves surface charge distribution and dispersion

High cationic density and strong reactivity

Customizable molecular weight, structure (linear/branched), and solid content

Direct factory supply, excellent price and quality

Complete documentation including COA, TDS, and MSDS

Suitable for a variety of industrial and research needs

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