A series of narrow-MMD polymers with the molecular mass from 33 x 10(3) to 123 x 10(3) (polydispersity coefficient 1.08-1.16) were synthesized by bulk polymerization of n-butyl acrylate 2,2'-azobis(isobutyronitrile), 60A degrees C in the presence of a low-molecular-mass RAFT agent, dibenzyl trithiocarbonate. Then, polymerization of acrylic acid was performed in aqueous-alcoholic solution (ammonium persulfate, 70A degrees C) in the presence of the obtained polymers, and a series of n-butyl acrylate-acrylic acid block copolymers with the molecular masses from 22 x 10(3) to 81 x 10(3) (polydispersity coefficient 1.07-1.13) were prepared. In aqueous-alcoholic solutions of the synthesized copolymers, there are nanoparticles whose size varies from 5 tD3/4 65 nm and increases with an increase in the molecular mass of the copolymer and in the concentration of water in the solvent.
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