Tri - composite polyamide membrane comprising a hydrocarbyl phosphate

A method for producing a composite polyamide membrane comprising a porous support and a thin film polyamide layer, i) a porous non-polar solution containing a polar solution and a polyfunctional acyl halide monomer comprising a polyfunctional amine monomer applied to the surface quality support, the monomer and interfacial polymerization, the method including forming a thin film polyamide layer, at least one or both of these solutions, tri - further comprising a hydrocarbyl phosphate compound, formed it and includes a exposing the ii) a thin film polyamide layer to nitrite, a method of. .FIELD 1