A method for producing substantially pure and colorless N-(dichlorophosphoryl) trichlorophosphazene

摘要

The invention relates to the preparation of n (dichlorophosphoryl) trichlorophosphazene - / p & & p & this process comprises a treatment by means of the resultant of the reaction medium lcp and nhcl followed by the passage of the reaction medium in a evaporator in a thin layer before the distillation of crude pnocl contained in said medium. / p & & p & this technique allows the elimination and the condensation subsequent of so, pocl and socl under gentle conditions of pressure and temperature.