Patent ID: 9695065
Date: 2017-07-04
CPC Classifications: B01D,C02F,Y02A

Claim:
1. A process for preparing a thin film composite membrane, comprising: (a) preparing an aqueous phase comprising a polyamine, and an organic phase comprising a polyfunctional acid halide, wherein the aqueous phase or organic phase or both further include a flux enhancing combination that comprises: (b) applying the aqueous phase to a surface of a porous support membrane to form a coated support membrane; and (c) applying the organic phase to the coated support membrane and interfacially polymerizing the polyamine and the polyfunctional acid halide to form a discrimination layer of a thin film composite membrane comprising the porous support membrane and the discrimination layer, the thin film composite membrane having a water flux that is greater than the water flux of a thin film composite membrane prepared in the absence of the water flux enhancing combination.