Alberdingk U 7665 Aromatic polyester-polyurethane Alberdingk Boley PU - Polyurethane dispersions (PUDs) >> Polyester PU ADHESIVE ALBERDINGK ® U 7665 Polyurethane Dispersion ALBERDINGK ® U 7665 is an aqueous, low viscous dispersion of an aromatic polyester-polyurethane without free isocyanate groups. ALBERDINGK ® U 7665 is mainly used in reactivable adhesives (130 – 160 °C). Good crosslinkability with polyisocyanates, e. g. Bayhydur 3100 (2 – 5 %). heat sensitive adhesives Aqueous, low viscous dispersion of an aromatic polyester-polyurethane without free isocyanate groups. Used in reactivable and heat sensitive adhesives. Offers good crosslinkability with polyisocyanates.