| 摘要 |
To provide a heat-treated finely powdered polyarylene sulfide. A heat-treated finely powdered polyarylene sulfide which is (i) a heat-treated finely powdered polyarylene sulfide produced from a separated liquid, (ii) a heat-treated finely powdered polyarylene sulfide that is obtained by obtaining a starting material finely powdered polyarylene sulfide by subjecting the separated liquid to solid-liquid separation and then subjecting the starting material finely powdered polyarylene sulfide to a preheat treatment and a heat treatment, (iii) a heat-treated finely powdered polyarylene sulfide having an average particle diameter of 1-80 μm, (iv) a heat-treated finely powdered polyarylene sulfide having a melt viscosity of 1 Pa·s or more, and (v) a heat-treated finely powdered polyarylene sulfide having a gas generation amount of 10 ppm or less. |
