公开(公告)号：US06245234B1

公开(公告)日：2001-06-12

申请号：US09325303

申请日：1999-06-03

申请人： Ja-Young Koo ,  Jong-Eun Kim ,  Wan-Ju Kim ,  Ki Suop Park

发明人： Ja-Young Koo ,  Jong-Eun Kim ,  Wan-Ju Kim ,  Ki Suop Park

IPC分类号： B01D7956

CPC分类号： B01D71/56 ,  B01D69/125

摘要： A composite polyamide reverse osmosis membrane and method of producing same. In one embodiment, the membrane is made by coating a porous polysulfone support for about 40 seconds with an aqueous solution containing (i) a polyfunctional primary or secondary amine in the form of 1.6 wt. % of meta-phenylenediamine (MPD), (ii) a polyfunctional tertiary amine in the form of 0.4 wt. % N,N,N′,N′-tetramethyl-1,6-hexanediamine (TMHD), and (iii) a polar solvent in the form of 0.2 wt. % 2-ethyl-1,3-hexanediol (EHD). Next, the excess aqueous solution is removed, and the coated support is dipped for about 1 minute in a 0.1 wt. % organic solvent solution of trimesoyl chloride (TMC) in a mixture of alkanes having from 8 to 12 carbon atoms. After draining the organic solvent solution off, the resulting composite membrane is air dried at room temperature for about 1 minute and then rinsed in a 0.2% Na2CO3 aqueous solution for 30 minutes at room temperature. The resultant membrane exhibits a flux of 46.5 gfd and a salt rejection of 97.1% when used at 225 psi for an aqueous solution containing 2000 ppm of NaCl. In another embodiment, instead of including a polyfunctional tertiary amine in the aqueous solution, there is included the reaction product of a polyfunctional tertiary amine and a strong acid, preferably in a ratio ranging from greater than 1:0, respectively, to less than or equal to 1:(0.95)n, respectively, where n is the number of tertiary functional groups in the polyfunctional tertiary amine.

摘要翻译： 一种复合聚酰胺反渗透膜及其制造方法。 在一个实施方案中，膜通过用含有（i）1.6重量％形式的多官能伯或仲胺的水溶液涂覆多孔聚砜载体约40秒来制备。 ％的间苯二胺（MPD），（ii）0.4重量％形式的多官能叔胺， ％N，N，N'，N'-四甲基-1,6-己二胺（TMHD），和（iii）0.2重量％ ％2-乙基-1,3-己二醇（EHD）。 接下来，除去过量的水溶液，并将涂覆的载体浸入0.1重量％ 在三苯甲酰氯（TMC）中的有机溶剂溶液在具有8至12个碳原子的烷烃的混合物中。 在排出有机溶剂溶液后，将所得复合膜在室温下空气干燥约1分钟，然后在室温下在0.2％Na 2 CO 3水溶液中漂洗30分钟。 对于含有2000ppm NaCl的水溶液，当在225psi下使用时，所得的膜表现出46.5gfd的通量和97.1％的拒水率。 在另一个实施方案中，代替在水溶液中包括多官能叔胺，包括多官能叔胺和强酸的反应产物，优选以大于1:0的比例分别小于或等于 分别等于1：（0.95）n，其中n是多官能叔胺中的叔官能团数。