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:
Feb. 24, 2015
Filed:
Dec. 26, 2012
Applicant:
National University of Singapore, Singapore, SG;
Inventors:
How Yong Ng, Singapore, SG;
Wei Duan, Singapore, SG;
Assignee:
National University of Singapore, Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 63/00 (2006.01); B01D 71/06 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01); B01D 69/10 (2006.01); B01D 61/14 (2006.01); C02F 1/44 (2006.01); B01D 61/00 (2006.01);
U.S. Cl.
CPC ...
B01D 69/12 (2013.01); B01D 69/10 (2013.01); B01D 69/125 (2013.01); C02F 1/445 (2013.01); B01D 61/002 (2013.01);
Abstract
A two-layered osmosis membrane contains a support layer and a rejection layer. The support layer, in which a mesh is embedded, is made of a phase separation polymer and has a thickness of 50 to 200 μm. The rejection layer, which adheres to the support layer, is made of a thin film composite polymer and has a thickness of 0.05 to 3 μm. The mesh, which is embedded in the support layer, has an open area of 30 to 70%, a mesh size of 60-300 mesh, and a thickness of 45-150 μm. Also disclosed is a method of making the above described membrane.