POLYMERIZATION METHOD WITH TURNED PHASE Russian patent published in 2017 - IPC C08F2/32 C08F20/56 B01D29/00 C08J11/02 

FIELD: chemistry.

SUBSTANCE: first, a slurry of monomer pellets is formed from an aqueous solution of an ethylenically unsaturated monomer or a mixture of monomers in a hydrocarbon non-aqueous liquid containing an amphipathic stabiliser. Further, a monomer or a mixture of monomers is polymerized to form polymer beads that are suspended in a hydrocarbon non-aqueous liquid. Then, the slurry of polymer pellets is removed, and the polymer pellets are removed therefrom. After this, the hydrocarbon non-aqueous liquid is moved to the purification stage of impurities. In the filtration stage with a crossflow, particles are removed from the hydrocarbon non-aqueous liquid. The device, suitable for the slurry polymerization process, includes: a vessel suitable for containing a hydrocarbon non-aqueous liquid; a means for forming a slurry of aqueous monomeric pellets in a hydrocarbon non-aqueous liquid; a means for removing a slurry of polymer pellets from the vessel; a means for recovering the polymer pellets from the slurry; a means for purifying the hydrocarbon non-aqueous liquid in, at least, one filtration step.

EFFECT: invention allows to ensure high purity of purified non-aqueous liquids from impurities and to obtain polymer pellets of high quality.

16 cl, 3 dwg, 1 ex