Abstract: It is an object of the present invention to provide a resin composition for an adhesive having high gas barrier properties and laminate strength. A resin composition for a gas barrier adhesive contains a resin (A) having two or more hydroxy groups per molecule and a polyisocyanate (B) having two or more isocyanate groups, in which the polyisocyanate (B) is a mixture of a tri- or higher-valent polyisocyanate compound (b1) having an aromatic ring in its molecule and a polyisocyanate compound (b2) having no aromatic ring in its molecule.

Abstract: A problem of the present invention is to provide a laminate which can be used as a packaging material mainly for food and the like and which uses a sealant layer having a specific adhesive layer having the oxygen- or gas-barrier properties in order to exhibit the excellent oxygen- or gas-barrier properties. The problem is solved by providing a laminate (A2) including a laminate (A1) used as a sealant film and having a layer configuration of base film/adhesive/laminate (A1), wherein the laminate (A1) has a layer configuration of film/oxygen or water-vapor barrier adhesive (B)/sealant film.