| 摘要 |
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 200 MV/m, a remanent polarization is at least 30 mC/m<2>, (2) the relative viscosity of a 1 g/dl solution of the polyamide in 96% concentrated sulfuric acid at 25 ° C. is 1.3 to 5.0, (3) the glass transition temperature is 80° C. or less and a calorific value at a cooling crystallization exotherm peak is 5 J/g or less, and (4) it is soluble in an amount of at least 5 mass % at 25 ° 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.
|
