The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2015
Filed:
Jan. 20, 2012
Abhishek Roy, Edina, MN (US);
Steven D. Jons, Eden Prairie, MN (US);
Joseph D. Koob, Jordan, MN (US);
Mou Paul, Edina, MN (US);
Xiaohua Sam Qiu, Midland, MI (US);
Steven Rosenberg, Shorewood, MN (US);
Abhishek Roy, Edina, MN (US);
Steven D. Jons, Eden Prairie, MN (US);
Joseph D. Koob, Jordan, MN (US);
Mou Paul, Edina, MN (US);
XiaoHua Sam Qiu, Midland, MI (US);
Steven Rosenberg, Shorewood, MN (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A method for making a composite polyamide membrane comprising the steps 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 includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof, and a single amine-reactive functional group; and ii) applying a C-Caliphatic monomer comprising at least one carboxylic acid functional group or salt thereof, and a single amine-reactive functional group to the thin film polyamide layer. Many additional embodiments are described including applications for such membranes.