FEUCHTIGKEITSHAERTENDER SCHMELZKLEBER

摘要

Disclosed are moisture-setting fusion adhesives containing polyurethane pre-polymers with an isocyanate-group content of 0.16-0.84 moles of isocyanate groups per kilogram of pre-polymer, the pre-polymers being obtained by reacting crystalline polyester polyols having a mean molecular weight of 2,000-10,000, optionally mixed with liquid and/or amorphous polyester and/or polyether polyols having an isocyanate number greater than one, the adhesive also containing diisocyanates trimerized to give isocyanurates. Adhesives of this kind have improved processing characteristics and are easier to use.