Process for preparing reverse-osmosis membrane, and membrane obtained with the process

摘要: The present invention relates to a process for preparing polypiperazinamide-based reverse-osmosis membranes comprising: (a) solution of polypiperazinamide in polar organic solvent; (b) applying the on planar support so as form body; (c) evaporating solvent under action flow air, said air having, with respect support, such speed produce Reynolds numbers between 5 and 100; (d) gelling body by phase reversal passing through coagulation bath membrane; (e) washing membrane extract contained therein. entire is carried out at temperature lower than about 30° C. allows production high mechanical characteristics.