| abstract |
A polyamide obtained by polycondensation of a diamine component containing at least 50 mol% of 2-methyl-1, 5-pentanediamine and a dicarboxylic acid component containing at least 50 mol% of azelaic acid, comprising the following properties of (1) to (4), (1) when a stretched film is polarized in an electric field of 200MV/m, a remanent polarization is at least 30mC/m2, (2) the relative viscosity of a 1g/d1 solution of the polyamide in 96% concentrated sulfuric acid at 25 DEG C is 1.3 to 5.0, (3) the glass transition temperature is 80 DEG C or less and a calorific value at a cooling crystallization exotherm peak is 5J/g or less, and (4) it is soluble in an amount of at least 5 mass% at 25 DEG C in at least one selected from methanol, ethanol and 2-propanol, and a resin composition containing the above polyamide and an electrically conductive material. |