Lupasol® PR 8515 is an anhydrous, low molecular weight, polyethylenimine that is used as an adhesion promoter and crosslinker in coatings and adhesives.
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Lupasol® PR 8515, is a water-free multi-functional cationic polyethyleneimine (PEI) with a branched polymer structure. Lupasol® PR 8515 has a low molecular weight and can be added to water-based coatings, inks, and adhesive formulations without a significant effect on viscosity. Due to the high cationic charge density, Lupasol® PR 8515 is highly effective at crosslinking negatively charged polymers, increasing adhesion, flocculating anionic contaminants, and dispersing cationic pigments. Lupasol® PR 8515 is available commercially as a viscous, 50% solids, aqueous solution in 55 gallon drums. It can be easily diluted with water and most polar solvents to your specific working concentration.
Compatible with cationic and nonionic systems Absorbs strongly on negatively charged surfaces Crosslinking agent Anhydrous Miscible with water in all proportions Flowable liquids Ames negative No detectable ethylenimine importunity Three types of bonding: ionic, hydrogen and van der Waals Forces Superior adhesion to metal surfaces Excellent adhesion promoters Fixing agent in hair treatment products FDA 175.105 approved for lamination or sealing of food packaging items
Problems Solved
Low cross-link density of sealants, adhesives, paints, coatings, and inks.
Applications
When added to coatings, inks, and adhesives Lupasol® PR 8515 improves adhesion of the formulation to challenging substrates like plastics, paper, and metal.
Lupasol® PR 8515 can be used as a crosslinker for polyurethane and epoxy systems to improve cure speed and increase overall durability of the cured film.