摘要 |
A process for preparing spheroidal polymer beads having an uniform size comprises (a) forming a monomer jet having laminar flow characteristics by flowing a monomer phase contg. a polymerizable monomer through an aperture into a continuous phase contg. a liquid immiscible with the polymerizable monomer or monomer phase and a stabilizing amount of a suspending agent, (b) breaking the monomer jet into droplets by vibratorily exciting the jet, and (c) polymerizing the monomer at suspension conditions which do not cause a significant coalescence or an additional dispersion. |