Lupasol® PR 8515 is an anhydrous, low–molecular weight polyethyleneimine used as an adhesion promoter and cross-linker in coatings and adhesives.
Lupasol® PR 8515 is a water-free, multifunctional, cationic polyethyleneimine (PEI) with a branched polymer structure. The Lupasol® PR 8515 polymer has a low molecular weight and can be added to water- or solvent-based coatings, inks, and adhesive formulations without significantly impacting viscosity. Lupasol® PR 8515 is commercially available with 99% active content as a viscous liquid in 55-gallon drums. It can be easily diluted with water and most polar solvents to specific working concentrations.
Due to its high cationic charge density, Lupasol® PR 8515 is highly effective at promoting chemical adhesion between negatively charged polymers and negatively charged surfaces. It is also effective at cross-linking negatively charged polymers. In adhesive formulations, this cross-linking action increases cohesive strength without negatively impacting adhesive strength. Lupasol® PR 8515 is also ideal for flocculating anionic contaminants and dispersing cationic pigments.
Average molar mass (g/mol): 2,000
Viscosity (cPs): 14,000
Concentration (%): 98
Color: Clear and colorless, rarely a slightly yellowish liquid
Primary Chemistry: Polyethyleneimine
Compatible with cationic and nonionic systems
Promotes adhesion to negatively charged plastic, metal, and fibrous surfaces
Effective cross-linking agent for anionic polymers
High-solids additive that is miscible with water in all proportions
Ames negative with no detectable ethyleneimine importunity
Approved via FDA 21 CFR 175.105 for use in food packaging formulations
Low cross-link density of sealants, adhesives, paints, coatings, or inks
Coatings
Inks
Adhesives
Food packaging
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