Patent ID: 8389082

Claim:
A fuel system comprising a fuel vessel, molded parts for the fuel vessel and/or a tube for a fuel in which bodies thereof are constituted from a thermoplastic resin and/or a rubber, wherein: a coating layer is formed on the surfaces in at least one sides of the insides and the outsides of the fuel vessel body, the molded part bodies for the fuel vessel and/or the tube body for a fuel or at least one of connected parts in these bodies; the above coating layer is formed by curing an epoxy resin composition comprising an epoxy resin and an epoxy resin curing agent as principal components; the above coating layer, which is barrier layer for gasoline, has a gasoline permeability coefficient of 2 g·mm/m 2 ·day or less at 60° C. and a relative humidity of 60% RH; the epoxy resin described above comprises epoxy resin having a glycidylamine part derived from 1,3-bis(aminomethyl)-cyclohexane; and the epoxy resin curing agent comprises a reaction product of (A) and (B) or a reaction product of (A), (B) and (C): (A) metaxylylenediamine or paraxylylenediamine, (B) a multifunctional compound having at least one acyl group which can form an amide group part by reacting with polyamine to form an oligomer, the multifunctional compound being selected from the group consisting of acrylic acid, methacrylic acid, and derivatives of acrylic acid, methacrylic acid, maleic acid, fumaric acid, succinic acid, malic acid, tartaric acid, pyromellitic acid and trimellitic acid, and (C) monovalent carboxylic acid having 1 to 8 carbon atoms and/or a derivative thereof; and the coating layer contains skeletal structure represented by the following formula (1) in an amount of 30% by weight or more based on the weight of the coating layer.