Nicholas S Beck

US Patent:

20160317977, Nov 3, 2016

Filed:

Dec 15, 2014

Appl. No.:

15/104023

Inventors:

- Midland MI, US
Nicholas S. Beck - Minneapolis MN, US
Robert C. Cieslinski - Midland MI, US
Bruce B. Gerhart - Midland MI, US
David D. Hawn - Midland MI, US
Duane Jacobson - Minneapolis MN, US
Mou Paul - Edina MN, US
Carl W. Reinhardt - Kawkawlin MI, US
Katmerka Tabakovic - Edina MN, US
Ian A. Tomlinson - Midland MI, US

International Classification:

B01D 69/12
B01D 67/00
B01D 71/56

Abstract:

A method for making a composite polyamide membrane including the step of applying a polar solution including a polyfunctional amine monomer and a non-polar solution comprising a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is characterized by including a tri-hydrocarbyl phosphate within the polar coating solution. The thin film polyamide layer is characterized by possessing an equilibrium water swelling factor of greater than 35% as measured by PFT-AFM.