| abstract |
The disclosed invention is directed to manufacture of high-flux, thin-film, composite RO membranes by use of aliphatic hydrocarbon solvents such as hexane. The addition of selected additives to these hydrocarbon solvents allows production of RO membranes with salt rejection and flux comparable to membranes produced with the chlorofluorocarbon-based (CFC-based) solvents of the prior art. |