| abstract |
(57) [Problem] To provide a polyamide porous spherical particle having a specific particle diameter and a pore diameter, a narrow particle diameter distribution, a large specific surface area and a high degree of crystallinity, and a method for producing the same. is there. A polyamide porous spherical particle having a number average particle diameter of 1 to 30 μm and a BET specific surface area of 100 to 80,000 m 2 / kg is prepared by mixing a polyamide (A) solution with a solvent (A) and a polyamide non-solvent (B). , And water (C) Are mixed to form a uniform solution temporarily, and then the polymer is precipitated to obtain spherical particles. |