Patent ID: 9399196
Filing Date: 2016-07-26
CPC Classification: B01D

Claim Text:
1. A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method comprises the step of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by including at least one of the following steps: i) conducting the interfacial polymerization in the presence of a monomer comprising: a hydrocarbon moiety, at least one phosphorous-containing functional group or salt thereof and at least one amine-reactive-functional group selected from acyl halide and epoxy; and ii) applying a monomer comprising: a hydrocarbon moiety, at least one phosphorous containing-functional group or salt thereof and at least one amine-reactive functional group selected from acyl halide and epoxy to the thin film polyamide layer.