NEW MIXTURES OF PERFLUORO-, ALPHA-CHLOROPERFLUORO- AND ALPHA,OMEGA-DICHLOROPERFLUOROALKANES, METHOD FOR PREPARING AND FIELD IN USING

摘要

FIELD: organic chemistry, chemical technology.;SUBSTANCE: invention relates to a new mixture of perfluoro-, α-chloroperfluoro- and α,ω-dichloroperfluoroalkanes of the formula: X(CF₂)_nY (wherein X = Y means F, Cl; X means F; Y means Cl; n = 12, 14, 16) used as powder-accelerators for plastic ski, and to a method for preparing these mixtures. Method for preparing mixtures of perfluoro-, α-chloroperfluoro- and α,ω-dichloroperfluoroalkanes involves interaction of perfluoro- and ω-chloroperfluorocarboxylic acids with potassium alkali at temperature below 60°C and then with potassium persulfate at 90-95°C. As the parent acid method involves using mixtures of perfluoroenanthic acid and ω-chloroperfluoroenanthic acid, perfluoroenanthic acid and ω-chloroperfluoropelargonic acid, perfluoropelargonic acid and ω-chloroperfluoroenanthic, perfluoropelargonic, ω-chloroperfluoropelargonic, ω-chloroperfluoroenanthic and ω-chloroperfluoropelargonic acids taken in the mole ratio = 1:1. Process is carried out in the mole ratio of acids mixture and potassium persulfate = 1:0.6. The developed method provides preparing new mixtures of powder-accelerators for plastic ski based on domestic raw.;EFFECT: improved preparing method, valuable properties of mixtures.;4 cl, 4 tbl, 9 ex