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公开(公告)号：US20210001279A1
公开(公告)日：2021-01-07
申请号：US16971417
申请日：2019-05-09
申请人： LG CHEM, LTD.
发明人： Ayoung LEE , Yun Seok CHOE , Chong Kyu SHIN , Phill LEE
摘要： Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.
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公开(公告)号：US20190291058A1
公开(公告)日：2019-09-26
申请号：US16317776
申请日：2017-09-29
申请人： LG CHEM, LTD.
发明人： Ayoung LEE , Sung Kyung PARK , Chong Kyu SHIN , Bong Ju KWAK
IPC分类号： B01D67/00 , B01D61/02 , B01D69/02 , B01D69/12 , B01D71/56 , C02F1/44 , C09D129/04 , C08J7/04
摘要： The present specification provides a composition comprising a material of Chemical Formula 1: having a molecular weight of 500,000 to 700,000 where R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, or an alkyl group, and n is from 10,000 to 20,000, for forming a reverse osmosis membrane protective layer, a method for preparing a reverse osmosis membrane using the same, a reverse osmosis membrane and a water-treatment module.
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3.发明申请公开(公告)号：US20200086276A1
公开(公告)日：2020-03-19
申请号：US16618958
申请日：2018-10-17
申请人： LG CHEM, LTD.
发明人： Ayoung LEE , Dae Hun KIM , Bumjoo KIM , Chong Kyu SHIN , Phill LEE , Kyunghoon MIN
摘要： Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.
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