Storage-stable, nco-free laminating adhesive

Abstract

The invention relates to a crosslinkable one-component laminating adhesive containing (i) 25 to 80 wt % polyester prepolymers, polyether prepolymers, and/or polyurethane prepolymers that are free of NCO groups and comprise at least one crosslinkable alkoxysilane group, as well as additionally NCO groups reacted with compounds that contain no hydrolyzable groups, and the prepolymer possesses a molecular weight from 2000 to 30,000 g/mol, (ii) 75 to 20 wt % organic solvent having a boiling point of up to 130° C., (iii) 1 to 20 wt % polymers, oligomers, and/or monomers that contain one or more anhydride groups, (iv) 0 to 15 wt % additives, where the viscosity of the adhesive is between 50 and 20,000 mPas (per DIN ISO 2555), measured at 15 to 45° C.

Dependencies are inferred from the claim text.