Process for conducting dispersion polymerisations controlled by raft agents in supercritical fluids

摘要

The present invention relates to a process for preparing a polymer by dispersion polymerisations controlled by reversible addition fragmentation chain transfer (RAFT) agents. More specifically, the invention relates to a process for the production of well defined spherical polymer and copolymer beads, on the micrometer scale, of uniform size (monodisperse microspheres). The molecular architecture of the beads can be controlled to a great extent using the RAFT agent. The present invention also provides monodisperse microspheres having unique layered architecture.