Branched polyethyleneimine (bPEI), MW ~1,800, is a highly branched polyamine with high cationic charge density. This water-soluble polymer contains primary, secondary, and tertiary amine groups that enable strong interaction with negatively charged surfaces and materials.
Synonyms and related names: Branched PEI, bPEI, polyethyleneimine branched polymer, cationic polyethyleneimine, PEI polymer.
Branched polyethyleneimine polymers are widely used in industrial and research applications because of their strong adsorption behavior, high amine functionality, and cationic charge density. PEI materials are commonly utilized in coatings, water treatment, adhesives, detergents, cosmetics, and paper processing applications.
Product specifications: Resin Content ≥99%; Cationic Charge Density: 16 meq/g.
Key Properties
- Highly branched polyamine polymer
- High cationic charge density
- Water-soluble polymer system
- Contains primary, secondary, and tertiary amine groups
- Strong adsorption to negatively charged surfaces
- Useful in industrial and polymer processing applications
Applications
Water Treatment
Branched polyethyleneimine is commonly used in water treatment processes where cationic polymers are needed for surface interaction and contaminant control.
Paper & Pulp Processing
bPEI polymers are widely utilized as auxiliary agents in papermaking and paper treatment applications.
Adhesives & Coatings
The polymer’s high amine functionality and charge density support use in coatings, adhesives, and surface modification systems.
Industrial Formulations
Polyethyleneimine materials are used in detergents, cosmetics, polymer formulations, and manufacturing workflows requiring cationic polymer functionality.
Compatibility & Solubility
- Water-soluble branched polymer
- Strong interaction with negatively charged surfaces
- Compatible with many aqueous formulation systems
- Useful in cationic polymer processing applications
Final formulation behavior depends on polymer concentration, pH, substrate composition, and processing conditions.
Preparation Tips
- Use clean laboratory or processing equipment during formulation preparation
- Add polymer gradually during mixing procedures
- Optimize concentration levels for target application performance
- Perform compatibility testing with new formulations
Handling & Storage
- Store in a cool, dry environment
- Keep container tightly closed when not in use
- Avoid contamination during handling
- Follow standard laboratory and industrial handling procedures
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FAQ
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1. What is branched polyethyleneimine used for?
Branched polyethyleneimine is used in water treatment, coatings, adhesives, paper processing, detergents, and industrial polymer applications.
2. What does PEI stand for?
PEI stands for polyethyleneimine, a highly branched cationic polyamine polymer.
3. Why is branched PEI highly cationic?
Branched PEI contains multiple primary, secondary, and tertiary amine groups that contribute to its high cationic charge density.
4. Is branched polyethyleneimine water soluble?
Yes. Branched polyethyleneimine is water soluble and compatible with many aqueous formulation systems.
5. What types of surfaces interact with PEI polymers?
PEI polymers strongly adsorb onto negatively charged surfaces including cellulose, metals, polyesters, and polyamides.
Safety & Documentation
Follow standard laboratory and industrial safety procedures when handling cationic polymer materials. Refer to the product Safety Data Sheet (SDS) for complete handling, storage, and safety information.
