The present invention provides an amine based
epoxy resin curing agent containing an
epoxy resin and an amine compound capable of imparting a high
gas barrier performance and a long pot life, in addition to excellent performances which an
epoxy resin conventionally possesses, and an epoxy resin composition with a high
gas barrier performance and a long pot life, which contains the subject curing agent. Also, the present invention provides an
adhesive for laminate with excellent adhesiveness to various polymers, papers, metals, etc., which contains, as a main component, an epoxy resin composition containing an amine based resin curing agent with a high
gas barrier performance and a long pot life.The amine based epoxy resin curing agent of the present invention is composed of a
reaction product of the following (A), (B) and (D) or a
reaction product of the following (A), (B), (C) and (D):(A) m-xylylenediamine or p-xylylenediamine,(B) a polyfunctional compound having at least one
acyl group, which is capable of forming an
amide group site through a reaction with a
polyamine and forming an
oligomer,(C) a monovalent
carboxylic acid having from 1 to 8 carbon atoms and / or its derivative, and(D) a functional compound having at least one
carbonate site represented by the formula (2), which is capable of forming a
carbamate site represented by the formula (1) through a reaction with a
polyamine: