公开(公告)号：US20180318765A1

公开(公告)日：2018-11-08

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: B01D61/02 ,  B01D67/00 ,  B01D69/10 ,  B01D71/56 ,  B01D71/58 ,  B01D71/76

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.

公开(公告)号：US20160220968A1

公开(公告)日：2016-08-04

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: B01D71/82 ,  B01D69/02 ,  B01D71/80 ,  B01D71/28 ,  B01D69/10 ,  B01D69/12

CPC classification number: B01D71/82 ,  B01D61/025 ,  B01D61/027 ,  B01D61/145 ,  B01D69/02 ,  B01D69/10 ,  B01D69/12 ,  B01D71/28 ,  B01D71/32 ,  B01D71/52 ,  B01D71/76 ,  B01D71/80 ,  B01D2323/02 ,  B01D2323/04 ,  B01D2323/12 ,  C08J5/2256

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.

Abstract translation: 水处理膜技术领域本发明涉及包含支撑体的水处理膜， 以及包含含有疏水性重复单元的共聚物和在载体上含有离子交换官能团的亲水重复单元的共聚物的聚合物层，其中，聚合物层的离子交换容量（IEC）为0.02meq / g〜2.4meq / g，以及 涉及具有优异的拒水和渗透流特性的水处理组件。

公开(公告)号：US20220193610A1

公开(公告)日：2022-06-23

申请号：US17598566

申请日：2020-03-17

Applicant: LG CHEM, LTD.

Inventor： Taehyeong KIM ,  Taeyoung PARK ,  Phill LEE ,  Dae Hun KIM ,  Kyunghoon MIN

IPC: B01D61/10 ,  B01D61/02 ,  C02F1/44

Abstract: Provided is a feed spacer for reducing differential pressure of a reverse osmosis element, the feed spacer forming the reverse osmosis element, the feed spacer comprising a plurality of strands disposed in a mesh shape having predetermined intersection points, and wherein a vertical cross section of each of the strands has a rhombic shape such that a pressure loss of in the feed spacer is minimized by an effective flow of raw water at an interface of a reverse osmosis membrane, and a nozzle for forming the feed spacer.

公开(公告)号：US20230285901A1

公开(公告)日：2023-09-14

申请号：US18014864

申请日：2022-02-16

Applicant: LG CHEM, LTD.

Inventor： Taehyeong KIM ,  Taeyoung PARK ,  Se Jeong HWANG ,  Phill LEE

IPC: B01D61/10 ,  B01D65/08 ,  B01D61/02 ,  B01D61/08 ,  C02F1/44

CPC classification number: B01D61/10 ,  B01D65/08 ,  B01D61/025 ,  B01D61/08 ,  C02F1/441 ,  B01D2313/143

Abstract: Provided is a feed spacer having a three-layered structure, and a reverse osmosis membrane filter module including the same, where the feed spacer includes a first set of a plurality of strands that are positioned in parallel; a second set of a plurality of parallel strands provided to cross the first set; and a third set of a plurality of parallel strands positioned in parallel with a raw water flow direction, where at least one of the first set and the second set consists of strands having a smaller thickness than that of the strands constituting the third set.

公开(公告)号：US20220370959A1

公开(公告)日：2022-11-24

申请号：US17621349

申请日：2020-09-25

Applicant: LG CHEM, LTD.

Inventor： Taehyeong KIM ,  Dae Hun KIM ,  Taeyoung PARK ,  Phill LEE ,  Kyunghoon MIN

IPC: B01D63/10 ,  B01D65/08

Abstract: Provided is a feed side spacer comprising a network structure, wherein the network structure includes a hexagonal eye, the hexagonal eye includes a pair of parallel portions parallel to a flow direction of a supply liquid, and an inclined portion disposed in a diagonal direction with respect to the flow direction of the supply liquid; the parallel portion has a length of 1 mm to 5 mm; the inclined portion has a length of 5.1 mm to 10 mm; and an angle formed by sides in contact with each other of the inclined portion is from 50° to 80°, and a separation membrane element comprising same.

公开(公告)号：US20220126240A1

公开(公告)日：2022-04-28

申请号：US17436196

申请日：2020-03-19

Applicant: LG CHEM, LTD.

Inventor： Taeyoung PARK ,  Phill LEE ,  Taehyeong KIM ,  Hyelim KANG ,  Huizi SHEN ,  Gahyeon LEE ,  Kiho KIM

IPC: B01D63/10 ,  C02F1/44 ,  B01D61/02 ,  B01D61/08

Abstract: Provided is a reverse osmosis spacer and a reverse osmosis element with a high recovery rate, and, more particularly, to a reverse osmosis spacer and a reverse osmosis element with a high recovery rate, which are capable of increasing a flow rate of produced water and decreasing less a salt removal rate in the reverse osmosis element during an operation at a high recovery rate with a structure of the reverse osmosis spacer that comprises the reverse osmosis element.