Abstract: An adhesive for solvent-free use consists of at least one polyurethane containing --OH or --NCO end groups modified by a (meth)acrylate- or vinyl- homo- or copolymer which may contain hydroxy functions, in which the polyurethane is the product of the reaction between a polyether polyol or dialcohol and/or a polyester polyol with an isocyanate monomer containing 1 to 4 --NCO groups and/or a polyisocyanate and/or a polyurethane prepolymer containing NCO end groups or --OH end groups.

Abstract: A two-part laminating adhesive is provided which joins two sheets of polymeric material, which adhesive, in cured form, provides substantially no contribution to the oxygen barrier properties of the laminate. The first part is a mixture of a polyol A), preferably a polyether, and a polymer B) formed from polymerization of .alpha.,.beta.-ethylenically unsaturated monomers, polymer B) preferably being formed in situ from monomers dissolved in polyol A). The second part is a multi-functional isocyanate, preferably an isocyanate-terminated urethane formed by reacting a poly-isocyanate monomer with a polyol.