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:
Jan. 07, 2020
Filed:
Apr. 10, 2014
Applicants:
Nanyang Technological University, Singapore, SG;
Evoqua Water Technologies Pte. Ltd., Singapore, SG;
Inventors:
Assignees:
Nanyang Technological University, Singapore, SG;
Evoqua Water Technologies Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/64 (2006.01); B01D 71/60 (2006.01); B01D 61/02 (2006.01); B01D 69/08 (2006.01); B01D 69/12 (2006.01); B01D 71/68 (2006.01); B01D 67/00 (2006.01); C02F 1/44 (2006.01); B29C 48/11 (2019.01); B29C 48/21 (2019.01); B29C 48/00 (2019.01); B01D 71/76 (2006.01); C08G 81/02 (2006.01); B29K 79/00 (2006.01); B29L 31/14 (2006.01); B29L 31/00 (2006.01); C02F 101/10 (2006.01); C02F 103/02 (2006.01);
U.S. Cl.
CPC ...
B01D 71/64 (2013.01); B01D 61/027 (2013.01); B01D 67/0006 (2013.01); B01D 69/085 (2013.01); B01D 69/088 (2013.01); B01D 69/12 (2013.01); B01D 71/60 (2013.01); B01D 71/68 (2013.01); B01D 71/76 (2013.01); B29C 48/022 (2019.02); B29C 48/11 (2019.02); B29C 48/21 (2019.02); C02F 1/442 (2013.01); C08G 81/028 (2013.01); B01D 2323/30 (2013.01); B29K 2079/085 (2013.01); B29L 2031/14 (2013.01); B29L 2031/755 (2013.01); C02F 2101/10 (2013.01); C02F 2103/02 (2013.01);
Abstract
A nanofiltration membrane comprising a selective layer comprising or consisting of poly(amide-imide) cross-linked with polyallylamine is provided. A method of manufacturing a nanofiltration membrane and use of a nanofiltration membrane in a water softening process that is carried out at a low pressure of less than about 2 bar are also provided.