FIELD: chemistry of polymers, hygiene.
SUBSTANCE: invention describes a method for preparing polysiloxane block-copolymer formed by links of the formula: [A][B] wherein A represents polymeric block formed of monomer polymerized by radical mechanism; B represents polysiloxane block. Method involves stage for formation of the polysiloxane macroinitiating agent as result of grafting radical initiating agent on polysiloxane by reaction of nucleophilic substitution occurring between groups of polysiloxane and radical initiating agent, respectively, and carrying out the radical polymerization reaction with transfer of atom between prepared by such manner the polysiloxane macroinitiating agent and monomers polymerizing by radical mechanism to obtain polysiloxane block-copolymer. Also, invention relates to cosmetic designated for individual hygiene. Method provides facility in preparing and economy.
EFFECT: improved preparing method.
6 cl, 3 tbl, 8 ex
