FIELD: chemistry.
SUBSTANCE: invention relates to a process for preparing αiodoperfluoroalkanes and α,ωdiiodoperfluoroalkanes of general formula: (I) A(C2F4)nI, where: A is selected from F, CF3 and I, and n is an integer greater than 1, provided that when A is F, then n is an integer equal to or greater than 1, comprising heating mixture M1 comprising: a compound selected from I2, CF3I, CF3CF2I and C2F4I2; tetrafluoroethylene; and CO2; at a temperature equal to or higher than 130 °C. Mixture comprises a liquid and a gas phase and contains CO2 in an amount of at least 18 % by volume of the entire gas phase.
EFFECT: minimum amount of cy-C4F8, formed during the reaction, high telomere output, in particular those having a low molecular weight, stability and non-explosion hazard of the compound or mixture.
15 cl, 6 tbl, 4 ex
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Authors
Dates
2018-10-11—Published
2015-04-09—Filed