Bayhydrol XP 2418 Polyurethane Bayer MaterialScience Polyurethane (PU) - Polyurethane dispersions (PUDs) Coatings >> Waterborne Plastic coating >> Primer water Aliphatic polyurethane resin dispersion in water, solvent-and amine-free. Binder for waterborne, air- and oven-drying primers for the coating of plastics. Use as a combination binder for base coats and soft-touch coating systems. Primers based on Bayhydrol XP 2418 are characterized by good adhesion to many types of plastics, good overcoatability and good water resistance. Aliphatic polyurethane resin dispersion. Used in plastic coatings. Possesses good overcoatability and good water resistance.