PEROXIDE FLUOROPOLYESTERS AND USE THEREOF IN EMULSION POLYMERISATION OF FLUORINE-CONTAINING MONOMERS Russian patent published in 2012 - IPC C08G65/00 C08L27/12 C08L27/18 C08L27/20 C08F214/18 C08F214/24 C08F214/26 C08F214/28 

FIELD: chemistry.

SUBSTANCE: invention relates to a peroxide fluoropolyester and a fluorine-containing dispersion obtained via polymerisation of fluorine-containing monomers in the presence of a peroxide fluoropolyester as a surfactant. The peroxide fluoropolyester has average molecular weight from 300 to 5000 and has formula A-O(G_f-O)_m(G_f-O-O)_n-(CF₂O)_p-(CF₂OO)_q-(CF(CF₃)O)_r-B (I) where: G_f denotes CF₂CF(CF₃)- or -CF(CF₃)CF₂-; terminal group A denotes -CF₃, -COOM or -CF₂COOM; B denotes -COOM or -CF₂COOM; where M denotes -H_; -NH₄ or an alkali metal; and m, n, p, q, r satisfy the following conditions: (1) m, n, p, q, r are whole numbers not less than zero; (2) n+q≥1; (3) n+q≤m+p+r; (4) m≥n+p+q+r; (5) correspond to requirements for said molecular weight range.

EFFECT: obtaining a peroxide fluoropolyester as a surfactant during polymerisation of fluorine-containing monomers in order to obtain fluorine-containing dispersions, which enables to reduce the dosage of initiators and cut duration of the reaction.

8 cl, 7 ex