High tack solvent-free adhesives

摘要

Adhesive composn. contains (a) 62-90 wt.% polyalkylene oxide of m.wt. 300-10,000 and OH no. 30-85, (b) 8-30 wt.% tackifying resin and (c) 2-8 wt.% aliphatic or aromatic di- or poly-isocyanate. (a) is pref. polyethylene and/or -propylene-oxide of m. wt. 900-500. (b) is pref. a (modified) natural or artificial resin of softening pt. 40-140 degrees C and of m.wt. 200-1500. (a) and (b) are pref. completely miscible at 100 degrees C.