| 摘要 |
PURPOSE:To provide in an industrially advantageous manner the title fine polymer beads sharp in granular size distribution. CONSTITUTION:A water-insoluble organic solvent with an organic polymer dissolved therein is forced, through a membrane with fine pores, into an aqueous phase into an oil-in-water-type emulsion followed by distilling the organic solvent off, thus depositing the objective fine polymer beads with uniform granular size in the aqueous phase. |
