Patent · US Active

Composite polyamide membrane made using substituted benzamide monomer

US9895666B2 · kind B2 · utility

0Cited by

67References

4Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Abhishek Roy · Edina, US
Tina L. Arrowood · Lakeville, US
Aman A. Desai · Midland, US
Steven D. Jons · Eden Prairie, US
Mou Paul · Edina, US
XiaoHua Qiu · Midland, US
Steven Rosenberg · Shorewood, US
Ian A. Tomlinson · Midland, US

Key dates

Filing date	Jan 3, 2014
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Jan 7, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F1/44
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for making a composite polyamide membrane comprising a porous support and a thin film polyamide layer, wherein the method includes the steps of applying a polar solution comprising 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. The method is characterized by including a substituted benzamide monomer within the non-polar solution.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.