公开(公告)号：US10279320B2

公开(公告)日：2019-05-07

申请号：US15021847

申请日：2014-09-16

Applicant: LG CHEM, LTD.

Inventor： Hyejin Kwon ,  Seungpyo Jeong ,  Taehyeong Kim ,  Joong Jin Han ,  Chong Kyu Shin

IPC: C08J5/22 ,  B01D61/02 ,  B01D61/14 ,  B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D71/28 ,  B01D71/32 ,  B01D71/52 ,  B01D71/76 ,  B01D71/80 ,  B01D71/82

Abstract: The present invention relates to a water treatment membrane including a support; and a polymer layer including a copolymer containing a hydrophobic repeating unit and a hydrophilic repeating unit including an ion exchange functional group on the support, wherein the polymer layer has ion exchange capacity (IEC) of 0.02 meq/g to 2.4 meq/g, and to a water treatment module, which have excellent salt rejection and permeate flow properties.

公开(公告)号：US10688449B2

公开(公告)日：2020-06-23

申请号：US15770859

申请日：2017-05-18

Applicant: LG CHEM, LTD.

Inventor： Byoungsoo Lee ,  Taehyeong Kim ,  Hyungjoon Jeon ,  Youngju Lee ,  Chong Kyu Shin ,  Bong Ju Kwak

IPC: B01D71/56 ,  B01D71/58 ,  B01D71/76 ,  B01D71/38 ,  B01D61/02 ,  B01D67/00 ,  B01D69/10 ,  B01D69/12 ,  C02F1/44 ,  B01D69/02 ,  B01D65/08

Abstract: The present specification provides a method for manufacturing a water-treatment separation membrane, the method comprising: preparing a porous support; forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and coating a coating solution comprising a random copolymer comprising the monomers represented by Chemical Formulae 1 to 3 onto the polyamide active layer, in which a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution, a water-treatment separation membrane manufactured by using the same, and a water treatment module comprising the water-treatment separation membrane.