Amine epoxy resin curing agent, gas barrier epoxy resin composition comprising the curing agent, coating agent, and adhesive agent for laminate

Abstract

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:

Dependencies are inferred from the claim text.