Rapid expansion of poly(2-ethylhexyl acrylate) suspensions in supercritical CO2 containing a hydrophilic as well as a CO2-philic surfactant produced stable aqueous latexes. The hydrophilic surfactants were soluble in both CO2 and water. The aqueous latexes could also be formed after depressurization and resuspension of the polymer dispersion in CO2. Latexes in basic buffer solutions were stable for a few weeks for concentrations up to 15.6% and for several months after sonication. The synthesis of water-dispersible polymer particles in CO2, which may be transferred to water without the need for organic solvents, offers the possibility of new environmentally benign coatings and adhesives.