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公开(公告)号：US20220118380A1
公开(公告)日：2022-04-21
申请号：US17506806
申请日：2021-10-21
Inventor： Woonbong HWANG , Seongmin Kim
Abstract: A super-hydrophilic surface treatment method of a filter medium of a filter for oil-water separation according to the present invention includes preparing a filter medium or a filter including the filter medium using a polymer base or a metal base, and forming a hydrophilic coating layer to the filter medium or the filter including the filter medium by cross-linking bis-acrylamide (N,N-methylenebisacrylamide).
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公开(公告)号：US20230081036A1
公开(公告)日：2023-03-16
申请号：US17775379
申请日：2021-01-29
Inventor： Woonbong HWANG , Seongmin KIM , Jeong-Won LEE
IPC: C09D183/04 , C09D5/00 , C09D7/61 , C08G77/04 , C08K3/28 , B05D5/08 , B05D7/16 , C23F1/34 , C23F1/36 , B05D3/10 , B05D3/02
Abstract: The present invention relates to an eco-friendly and simple super-hydrophobic coating method that does not use harmful substances and special equipment. Coating according to the present invention may be performed as a single process without special equipment, and because only eco-friendly materials are used, the coating material may be easily used and discarded. In addition, even a three-dimensional pipe or a heat-exchanger having a complex shape may be modified to have super-hydrophobicity by applying the present coating, and a super-hydrophobic metal filter may be manufactured and used for oil-water separation. As a result, the present coating method is eco-friendly, simple, and applicable to various substrates, so it has great potential for application in various industries.
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3.发明申请公开(公告)号：US20230022778A1
公开(公告)日：2023-01-26
申请号：US17779728
申请日：2020-11-26
Inventor： Woonbong HWANG , Handong CHO , Seongmin KIM
IPC: B01D39/16 , B01D17/02 , D06M15/59 , D06M15/285 , C08J3/24
Abstract: A method for ultra-hydrophilic surface treatment of a polymer fiber substrate according to the present invention comprises the steps of: forming a thermosetting coating layer on the surface of a polymer substrate; forming a carboxylate group (—COO—) on the surface of the thermosetting coating layer; forming an amide bond (—CONH—) between the thermosetting coating layer and hydrogel monomers; and forming a hydrophilic polymer layer by crosslinking the hydrogel monomers.
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4.发明申请公开(公告)号：US20230039303A1
公开(公告)日：2023-02-09
申请号：US17759063
申请日：2020-12-01
Inventor： Woonbong HWANG , Handong CHO , Seongmin KIM
IPC: B01D17/04 , B01D35/30 , B01D17/12 , B01D35/147 , B01D39/16 , B01D17/02 , C02F1/00 , C02F1/40 , C02F1/44 , B01D69/02 , D06M15/59 , D06M15/285
Abstract: A continuous oil-water separation system includes a storage tank having an inlet and an outlet and storing an oil-water mixture, a filter housing including a storage space having a predetermined height and having an inlet connected to the outflow portion of the storage tank to allow the oil-water mixture to flow in therethrough, a water drain hole allowing water separated from the oil-water mixture to be discharged therethrough, and an outlet allowing a residual oil-water mixture to flow out therethrough, a super-hydrophilic oil-water separation filter positioned in the storage space of the filter housing to absorb water from the oil-water mixture and connected to the water drain hole to allow the absorbed water to be discharged therethrough, a pressure control valve installed on an outlet pipe extending from the outlet, and a hydrophobic membrane connected to a rear end of the pressure control valve on the outlet pipe.
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