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. 22, 2016
Filed:
Mar. 16, 2013
Dow Global Technologies Llc, Midland, MI (US);
Abhishek Roy, Edina, MN (US);
Steven D. Jons, Eden Prairie, MN (US);
Joseph D. Koob, Jordan, MN (US);
Martin H. Peery, Bloomington, MN (US);
XiaoHua Sam Qiu, Midland, MI (US);
Steven Rosenberg, Shorewood, MN (US);
Ian A. Tomlinson, Midland, MI (US);
Abstract
A method for making a composite polyamide membrane comprising the step of applying polyfunctional amine and acid halide monomers to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer. The method further includes the step of conducting the interfacial polymerization in the presence of: a carboxylic acid monomer comprising an aliphatic or aromatic moiety substituted with single carboxylic acid functional group and at least one acyl halide functional group, and a tri-hydrocarbyl compound.