Synthesis of perfluoro alkyl iodides

摘要

The invention relates to a continuous process for the preparation of perfluoroalkyl iodides by telomerization of heat in the gaseous phase of the tetrafluoroethylene by pentafluoroethyl iodide or heptafluoroisopropyl in a tubular reactor. & br / in order to improve the selectivity for a telomer desired, it is recycled the telomers of lower rank in at least one point of the reactor located between the twentieth and three quarters of the length of the tubing.