| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyamide fuel tube excellent in alcohol gasoline impermeability, interlaminar adhesiveness, low temperature impact resistance, heat resistance and chemical resistance and capable of effectively utilizing a raw material polyamide mixture produced at the time of production of a laminated tube. SOLUTION: The polyamide fuel tube includes a layer (a) comprising a nylon 11 and/or nylon 12 polymer (A), a layer (b) comprising a laminar silicate-containing polyamide composition polymer (B), a layer (c) comprising an adhesive polyamide polymer (C) and/or a layer (d) comprising a mixed polymer (D) composed of the polymer (A), the polymer (B) and the polymer (C) and is constituted so that the layer (a) is adaped to the outermost and innermost layers and the layer (c) or the layer (d) is arranged between the layers (a) and (b). Herein, the polymer (C) is the adhesive polyamide polymer satisfying the condition of the formula: ¾(γA+γB)/2-γC¾≤4.0 (whereinγis the surface tension of the polymer). COPYRIGHT: (C)2005,JPO&NCIPI
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