Adhesive, multilayer body and packaging material

Abstract

The polyisocyanate composition maintains an adhesive function comparable to that of a currently available urethane-reactive two-liquid curable adhesive and reduces the amount of isocyanate monomers. The polyisocyanate composition contains a compound (A1) having one or more isocyanate groups with a number-average molecular weight of more than 280 and an isocyanate monomer (A2) having a number-average molecular weight of 140 to 280, in which a blending amount of the isocyanate monomer (A2) is 0.001% by mass or more and 0.1% by mass or less with respect to the solid content of the polyisocyanate composition; a two-liquid curable adhesive containing the polyisocyanate composition and a composition (Y) which contains a compound having a group capable of reacting with an isocyanate group; and a laminate and a packaging material using the same.

Dependencies are inferred from the claim text.