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公开(公告)号：US20220126240A1
公开(公告)日：2022-04-28
申请号：US17436196
申请日：2020-03-19
申请人： LG CHEM, LTD.
发明人： Taeyoung PARK , Phill LEE , Taehyeong KIM , Hyelim KANG , Huizi SHEN , Gahyeon LEE , Kiho KIM
摘要： 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.
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公开(公告)号：US20180178170A1
公开(公告)日：2018-06-28
申请号：US15580656
申请日：2016-05-09
申请人： LG CHEM, LTD.
发明人： Byoungsoo LEE , Hyung Joon JEON , Hyelim KANG , Chong Kyu SHIN , Bong Ju KWAK
CPC分类号： B01D71/56 , B01D61/02 , B01D61/025 , B01D63/00 , B01D67/00 , B01D67/0006 , B01D69/10 , B01D69/125 , B01D71/06 , C02F1/44 , C02F1/441
摘要： The present specification relates to a method for manufacturing a water-treatment membrane, a water-treatment membrane manufactured using the same, and a water-treatment module including the water-treatment membrane.
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公开(公告)号：US20220226785A1
公开(公告)日：2022-07-21
申请号：US17609072
申请日：2020-04-22
申请人： LG CHEM, LTD.
发明人： Hyelim KANG , Lakwon CHOI , Huizi SHEN , Gahyeon LEE , Chong Kyu SHIN
摘要： Provided is a composition for forming a separation membrane active layer, the composition comprising a compound of the following Chemical Formula 1 and a compound of the following Chemical Formula 2, wherein a percentage (a/b) of a weight (a) of the compound of Chemical Formula 1 to a weight (b) of the compound of Chemical Formula 2 is 30% to 60%, and a pH thereof is 11 to 12.7: wherein in Chemical Formulae 1 and 2: R1 to R16 are each independently —CRR′— or —NR″—. at least two of R1 to R10 are —NR″—; at least two of R11 to R16 are —NR″—; and R, R′, and R″ are each independently hydrogen or a substituted or unsubstituted alkyl group; a method for producing a separation membrane; a separation membrane; and a water treatment module.
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公开(公告)号：US20210113969A1
公开(公告)日：2021-04-22
申请号：US16756962
申请日：2019-01-18
申请人： LG CHEM, LTD.
发明人： Hyelim KANG , Danbi HAN , Eun Woo CHO , Hyungjoon JEON , Chong Kyu SHIN , Lakwon CHOI
摘要： Provided is a method for manufacturing a water-treatment membrane, the method including bringing an aqueous solution including free chlorine and a halogen ion into contact with a polyamide active layer, wherein the free chlorine is present in an amount from 150 ppm to 400 ppm and the halogen ion is present in an amount from 150 ppm to 400 ppm based on the aqueous solution, and a water-treatment membrane manufactured using the same.
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