Abstract: Disclosed are [1] a polyamide resin composition comprising at least 85% by weight of an aliphatic polyamide resin (A-1) in which the concentration of the terminal amino group is higher than the concentration of the terminal carboxy group, from 0.01 to 10% by weight of talc (B) dispersed in the aliphatic polyamide resin (A-1), and from 0.0001 to 1% by weight of a dispersing agent (C); [2] a polyamide resin composition comprising from 75 to 95% by weight of the aliphatic polyamide resin (A-1), from 1 to 15% by weight of an aromatic polyamide resin (A-2), from 0.01 to 10% by weight of talc (B) dispersed in the polyamide resins (A-1) and (A-2), and from 0.0001 to 1% by weight of a dispersing agent (C); [3] a method for producing them; and [4] a fuel part comprising the composition. The polyamide resin composition has excellent adhesion strength to polyolefin resin and others and excellent fuel gas barrier properties, not detracting from the properties inherent to polyamide resins.

Abstract: In an asymmetric multi-layer film composed mainly of a polyamide layer and a thermoplastic layer, the polyamide layer is made of polyamide having a unit derived from an aminocarboxylic acid and/or a lactam compound, a unit derived from a diamine compound such as a branched alicyclic diamine having 6-16 carbon atoms, and a unit derived from a dicarboxylic acid compound, and the thermoplastic layer is made of thermoplastic resin other than the polyamide of the polyamide layer.