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公开(公告)号：US10112154B2
公开(公告)日：2018-10-30
申请号：US14908973
申请日：2014-08-01
申请人： LG CHEM, LTD.
发明人： Youngju Lee , Chong Kyu Shin , Phill Lee , Byungho Jeon
摘要： The present invention relates to a water treatment separation membrane having improved durability and including a porous support; a polyamide active layer formed on the porous support; and a protective layer formed on the polyamide active layer and including polyvinyl pyrrolidone, wherein a thickness of the protective layer is 0.5 nm to 1000 nm, and a method for manufacturing the same.
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公开(公告)号：US11718712B2
公开(公告)日：2023-08-08
申请号：US16756652
申请日：2019-06-20
申请人： LG CHEM, LTD.
发明人： Eunkyoung Byun , Youngju Lee , Lakwon Choi , Chong Kyu Shin
IPC分类号： C08G69/44 , C08G69/04 , B01D61/02 , B01D67/00 , B01D69/10 , B01D71/56 , C02F1/44 , C09D177/10 , B01D69/00
CPC分类号： C08G69/04 , B01D61/025 , B01D67/0006 , B01D69/10 , B01D71/56 , C02F1/441 , C09D177/10 , B01D2323/36 , C02F2305/04
摘要： Provided is a composition for interfacial polymerizing polyamide including an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound of Chemical Formula 1:
wherein, in Chemical Formula 1:
X is N or NH;
Y is O or OH;
Z is O, OH or NH2;
R1 and R2 are each hydrogen or a substituted or unsubstituted alkyl group; and
is a single bond or a double bond,
and a method for manufacturing a water-treatment membrane and a water-treatment membrane using the same.-
公开(公告)号：US11517861B2
公开(公告)日：2022-12-06
申请号：US16756264
申请日：2019-07-09
申请人： LG CHEM, LTD.
发明人： Eunkyoung Byun , Youngju Lee , Hyungjoon Jeon , Young Jun Shin , Chong Kyu Shin
摘要： Provided is a water-treatment membrane including a porous support; and a polyamide active layer including chlorine on a surface thereof, wherein CIE L*a*b* color coordinate values after storing for 30 days or longer at 25° C. to 80° C. satisfy Equation 1 to Equation 3: 91 −1.5 −1.5 of the present disclosure, a water-treatment module including the same, and a method for manufacturing the same.
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公开(公告)号：US10688449B2
公开(公告)日：2020-06-23
申请号：US15770859
申请日：2017-05-18
申请人： LG CHEM, LTD.
发明人： Byoungsoo Lee , Taehyeong Kim , Hyungjoon Jeon , Youngju Lee , Chong Kyu Shin , Bong Ju Kwak
IPC分类号： B01D71/56 , B01D71/58 , B01D71/76 , B01D71/38 , B01D61/02 , B01D67/00 , B01D69/10 , B01D69/12 , C02F1/44 , B01D69/02 , B01D65/08
摘要： 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.
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公开(公告)号：US11992812B2
公开(公告)日：2024-05-28
申请号：US16978320
申请日：2019-06-14
申请人： LG CHEM, LTD.
发明人： Lakwon Choi , Youngju Lee , Eunkyoung Byun , Chong Kyu Shin
CPC分类号： B01D69/1251 , B01D69/1071 , B01D71/56 , C02F1/44 , C08G69/04 , C08K5/17
摘要： Provided is a composition for interfacially polymerizing polyamide including an amine compound and a chain-type-structured additive containing one or more amino groups and two or more hydroxyl groups, and a method for manufacturing a water treatment separation membrane, and a water treatment separation membrane using the same.
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公开(公告)号：US11173455B2
公开(公告)日：2021-11-16
申请号：US16490012
申请日：2018-04-18
申请人： LG CHEM, LTD.
发明人： Eunkyoung Byun , Chong Kyu Shin , Youngju Lee , Hyungjoon Jeon
摘要： Provided is a water treatment membrane including: a porous support; and a polyamide active layer provided on the porous support, in which the polyamide active layer includes one or more units selected from among a unit of Chemical Formula 1: a unit of Chemical Formula 2; a unit of Chemical Formula 3; and a unit of Chemical Formula 4; and a manufacturing method thereof.
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7.发明授权公开(公告)号：US10155204B2
公开(公告)日：2018-12-18
申请号：US15104917
申请日：2014-12-24
申请人： LG CHEM, LTD.
发明人： Youngju Lee , Byungho Jeon , Chong Kyu Shin
摘要： The present invention relates to a dry water treatment membrane having moisture content of 1% to 10%, and a method for manufacturing the same.
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