Lupasol® are polymers with multi-functional, non-toxic cationic polymers based on ethylene imine with molecular weights from 800 to 2 mio. Da.

Due to their strong and permanent binding to surfaces, they are exceptional surface modifiers. The Polyethylenimines (Lupasol®) from BASF are branched spherical polymeric amines. Due to their high charge density they adsorb tightly on negatively charged surfaces. This mode of action can be applied to a huge variety of materials, such as cellulose, polyesters, polyolefines, polyamides, and metals, and provides visible advantages to the user.

• Lupasol® is the ideal adhesion promoter between different types of plastics or between plastics and polar substrates, such as polyolefine films and paper.
• Lupasol® improves dye acceptance, paintability, and barrier properties
• In lamination inks, Lupasol® acts as a tie-bond for the plastic film placed over the substrate.