| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyamide resin composition for a fuel piping component including a polyamide resin whereby, in comparison with a conventional aliphatic polyamide resin, sufficient relative viscosity ηr, a wider moldable temperature range, heat resistance and melt-moldability, and reduction in the number of molding cycles can be achieved and excellent chemical resistance, hydrolysis resistance, and fuel barrier properties are exhibited without deteriorating low water absorbability; and to provide a fuel piping component which is obtained by molding the polyamide resin composition and equipped with excellent environment resistance such as low temperature shock resistance and excellent chemical resistance and fuel impermeability. <P>SOLUTION: The polyamide resin composition for a fuel piping component includes the polyamide resin (component A). The component A is produced by binding a unit derived from a dicarboxylic acid to a unit derived from a diamine, wherein the dicarboxylic acid includes an oxalic acid (compound a), the diamine includes a 1,6-hexanediamine (compound b) and a 2-methyl-1,5-pentanediamine (compound c), and the molar ratio of the compound b to the compound c is 99:1 to 50:50. <P>COPYRIGHT: (C)2013,JPO&INPIT |
