FLUORINE-CONTAINING SURFACTANTS FOR PRODUCING FLUOROPOLYMERS Russian patent published in 2012 - IPC C07C53/21 C07C53/18 C07C53/15 

FIELD: chemistry.

SUBSTANCE: present invention relates to a fluorinated surfactant of general formula: [R_r-(O)_t-CHF-(CF₂)_n-COO-]_iXⁱ⁺ (1), where t=1 and n=0 or 1, Xi+ is a cation with valence i, where i=1, 2 or 3, and Rf is selected from perfluorinated groups of formula R_f ¹-[OR_f ²]p-[OR_f ³]q-, where R_f ¹ is represented by a perfluorinated aliphatic group with 1-6 carbon atoms, R_f ² and R_f ³ separately denote a linear perfluorinated alkylene with 1, 2, 3 or 4 carbon atoms, and p and q separately assume values from 0 to 4, wherein the sum of p and q equals at least 1. The invention also relates to a method of producing a fluoropolymer in the presence of one or more surfactants described above.

EFFECT: disclosing an alternative version of the emulsion polymerisation process.

5 cl, 2 tbl, 5 ex