POROUS BEADS AND PROCESS FOR PRODUCING THE SAME

摘要

Porous beads which are substantially spherical ones made of an aromatic polyether ketone resin and have an average particle diameter of 50 to 5,000 mu m and a porosity of 40 to 99%. The process is characterized by comprising: mixing an aromatic polyether ketone resin with a solvent for the resin with heating to obtain a resin solution; dispersing the resin solution into a liquid dispersion medium which is a nonsolvent for the resin and is immiscible with the solvent to obtain a dispersion in which the resin solution is present as dispersed droplets; cooling the dispersion while maintaining the dispersed state of the resin solution to thereby solidify the resin contained in the resin solution; and separating the solidified resin from the mixture of the solvent and the dispersion medium to obtain substantially spherical porous beads made of the aromatic polyether ketone resin.