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. 02, 2016
Filed:
Feb. 09, 2011
Sung Dae Chi, Hwaseong-si, KR;
Bong Jun Cha, Seoul, KR;
Jong Hwa Lee, Anyang-si, KR;
Doo RI Kim, Seoul, KR;
Su Jeong Lim, Suwon-si, KR;
Sung Dae Chi, Hwaseong-si, KR;
Bong Jun Cha, Seoul, KR;
Jong Hwa Lee, Anyang-si, KR;
Doo Ri Kim, Seoul, KR;
Su Jeong Lim, Suwon-si, KR;
Woongjin Chemical Co., Ltd., , KR;
Abstract
A forward osmosis membrane for seawater desalination and a method for preparing the same. The forward osmosis membrane has a composite membrane structure including a nonwoven fabric layer, a hydrophilic polymer layer, and a polyamide layer. The hydrophilic polymer layer formed on the nonwoven fabric layer facilitates an inflow of water from the feed water to the draw solution to enhance flux and realize high water permeability in the direction of osmosis. The polyamide layer not only secures contamination resistance and chemical resistance but also minimizes the back diffusion of salts of the draw solution in the direction of reverse osmosis. Hence, the forward osmosis membrane of the present invention is greatly useful for desalination of high-concentration seawater.