公开(公告)号：US11241659B2

公开(公告)日：2022-02-08

申请号：US16755969

申请日：2018-11-07

申请人： LG CHEM, LTD.

发明人： Byoungsoo Lee ,  Sora Bang ,  Chong Kyu Shin ,  Keun Won Song ,  Hyungbae Gil

IPC分类号： B01D53/22 ,  B01D67/00 ,  B01D69/10 ,  B01D71/22

摘要： Provided is a method for preparing a gas separation membrane, the method including forming a porous layer by coating a hydrophilic polymer solution on a porous substrate; and forming an active layer by coating a composition for forming an active layer including a polymer of Chemical Formula 1 on the porous layer, wherein in Chemical Formula 1, n is the number of a repeating unit, and is an integer of 500 to 3,000, and R1 to R5 are the same as or different from each other, and each independently is hydrogen, an alkyl group, or —(C═O)R6, and R6 is an alkyl group, wherein the polymer of Chemical Formula 1 is included in an amount from 1% by weight to 5% by weight based on the composition for forming an active layer, and a gas separation membrane prepared using the same.

公开(公告)号：US11034808B2

公开(公告)日：2021-06-15

申请号：US15532297

申请日：2015-12-02

申请人： LG CHEM, LTD.

发明人： Hyungsam Choi ,  Byungguk Kim ,  Youngsik Eom ,  Chong Kyu Shin ,  Keun Won Song

IPC分类号： C08J5/22 ,  C08G75/20 ,  C08G75/14 ,  H01M2/16 ,  H01M10/0565 ,  C08G61/00 ,  C08L81/00 ,  C08G75/00 ,  C08L65/00 ,  H01M50/409

摘要： The present application relates to a polymer, a method for manufacturing the same, and an electrolyte membrane including the same.

公开(公告)号：US10479864B2

公开(公告)日：2019-11-19

申请号：US15511998

申请日：2015-09-09

申请人： LG CHEM, LTD.

发明人： Byungho Jeon ,  Hyuin Ryu ,  Keun Won Song ,  Chong Kyu Shin

IPC分类号： C08G69/26 ,  B01D71/06 ,  C02F1/44 ,  C08J3/09 ,  B01D61/02 ,  B01D69/12 ,  B01D71/56

摘要： The present invention relates to a method for manufacturing a water treatment separation membrane, the method including: forming an aqueous solution layer including an amine compound on a porous support; and bringing an organic solution including an acyl halide compound into contact with on the aqueous solution layer to form a polyamide active layer, in which the organic solution includes a non-polar solvent and an amphiphilic solvent having a boiling point of 120° C. or more, thereby improving a permeation flux, and a water treatment separation membrane manufactured by the manufacturing method.