| abstract |
The present invention provides a process for preparing an aqueous dispersion of polymer particles comprising the following steps, novel amphipathic RAFT formulations for use in this method, novel RAFT formulations useful for making these amphipathic RAFT formulations, and methods for their preparation. (I) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising at least one ethylenically unsaturated monomer, and an amphiphilic RAFT formulation as a stabilizer for said organic phase, and (ii) said parent Polymerizing the at least one ethylenically unsaturated monomer under the control of a solvent RAFT formulation to form an aqueous dispersion of polymer particles. |