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公开(公告)号：US11028237B2
公开(公告)日：2021-06-08
申请号：US16341804
申请日：2018-06-21
Applicant: LG Chem, Ltd.
Inventor： Taehee Kim , Sewoo Yang , Ji Young Hwang , Gi Cheul Kim
Abstract: The present invention relates to a method for preparing a superabsorbent polymer that progresses dry mixing of fine powders and a specific powder type of polymer binder when reassembling fine powders generated during the preparation process of a superabsorbent polymer, and thus obviates the necessity for a moisture drying process after reassembling fine powders, thereby reducing thermal losses, improving productivity, and obtaining a superabsorbent polymer having excellent basic absorption properties, and a superabsorbent polymer prepared by the method.
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公开(公告)号：US10981146B2
公开(公告)日：2021-04-20
申请号：US15524697
申请日：2015-12-29
Applicant: LG Chem, Ltd.
Inventor： Sung Soo Park , Gi Cheul Kim , Ju Eun Kim , Hyeon Choi , Hyo Sook Joo , Sung Hyun Park , Hee Jung Choi , Ki Youl Yoon
IPC: B01J20/26 , C08J3/075 , C08J3/12 , C08K9/06 , C08J3/24 , B01J20/28 , B01J20/10 , B01J20/30 , B01J20/32 , A61F13/53
Abstract: The present invention relates to a super-absorbent polymer having excellent properties, both centrifugal retention capacity (CRC) and absorption under pressure (AUP) having been improved by introducing a surface crosslinked layer crosslinked by surface-modified inorganic particles, and to a method for preparing the same. The super-absorbent polymer comprises: a base resin powder containing a crosslinked polymer of water-soluble ethylene-based unsaturated monomers having an at least partially neutralized acidic group; and a surface crosslinked layer formed on the base resin powder, wherein inorganic particles may be chemically bound to the crosslinked polymer contained in the surface crosslinked layer, via an oxygen-containing bond or a nitrogen-containing bond.
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公开(公告)号：US20210031169A1
公开(公告)日：2021-02-04
申请号：US16632789
申请日：2018-08-14
Applicant: LG Chem, Ltd.
Inventor： Kyu Pal Kim , Gi Cheul Kim , Ki Hyun Kim , Seul Ah Lee , Sang Gi Lee
Abstract: The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.
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公开(公告)号：US10858486B2
公开(公告)日：2020-12-08
申请号：US15757055
申请日：2016-03-17
Applicant: LG Chem, Ltd.
Inventor： Seung Mo Lee , Gi Cheul Kim , Ki Hyun Kim , Je Kyun Lee , Jong Hun Kim , Taegyeong Kang
Abstract: The present invention relates to a super absorbent polymer and a production method thereof which enable production of a super absorbent polymer exhibiting a more improved absorption rate while maintaining excellent absorption characteristics.
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公开(公告)号：US10669381B2
公开(公告)日：2020-06-02
申请号：US15755296
申请日：2016-03-18
Applicant: LG Chem, Ltd.
Inventor： Seung Mo Lee , Gi Cheul Kim , Kyu Pal Kim
IPC: B01J20/26 , C08J3/075 , C08J3/12 , C08F20/06 , C08F2/44 , C08F2/46 , C08J3/24 , C08L33/02 , A61L15/42 , A61L15/60 , B01J20/28 , C08J3/28
Abstract: The present invention relates to a method for a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention makes it possible to provide a super absorbent polymer in which characteristics such as a centrifuge retention capacity and an absorption rate are improved in a balanced manner.
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Patent Agency Ranking
公开(公告)号：US10669361B2
公开(公告)日：2020-06-02
申请号：US16083755
申请日：2016-12-23
Applicant: LG Chem, Ltd.
Inventor： Ki Hyun Kim , Gi Cheul Kim , Won Mun Choi , Won Taeck Lim , Seul Ah Lee
IPC: C08F20/10 , C08K3/22 , C08K3/34 , C08L33/08 , C08J3/12 , B01J20/26 , C08J3/24 , C08K5/51 , C08F222/10
Abstract: The present invention relates to a method for superabsorbent polymer that has a crosslinking density gradient increasing from the inside toward the outside, and thus, exhibits excellent properties with simultaneously improved centrifuge retention capacity and absorbency under load.
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公开(公告)号：US10562992B2
公开(公告)日：2020-02-18
申请号：US16090722
申请日：2017-12-13
Applicant: LG Chem, Ltd.
Inventor： Ki Youl Yoon , Hyo Sook Joo , Gi Cheul Kim , Hyeon Choi , Ju Eun Kim
IPC: C08F20/18 , C08F20/06 , C08F20/56 , C08F2/44 , C08F2/38 , C08K5/103 , C08J3/24 , C08J3/12 , C08J9/28 , C08L71/02 , B01J20/26 , C08F20/08 , C08K3/36 , C08K3/22
Abstract: The present disclosure relates to a preparation method of a porous super absorbent polymer including the steps of preparing a monomer neutralized solution by adding an internal cross-linking agent, an initiator, an inorganic filler, and a nonionic surfactant to a neutralized solution obtained by neutralizing at least 80 mol % of a water soluble ethylene-based unsaturated monomer containing acidic groups; high-shear mixing the monomer neutralized solution; preparing a hydrogel polymer from the high-shear mixed monomer neutralized solution by thermal polymerization or photopolymerization; and preparing a base resin powder by drying, pulverizing, and classifying the hydrogel polymer.
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58.发明授权公开(公告)号：US10066061B2
公开(公告)日：2018-09-04
申请号：US15313202
申请日：2015-12-10
Applicant: LG Chem, Ltd.
Inventor： Seung Mo Lee , Gi Cheul Kim , Kum Hyoung Lee , Se Yeol Park
IPC: A61F13/53 , A61L15/60 , B01J20/26 , C08F2/10 , C08F2/44 , C08F20/06 , C08J3/00 , C08J3/075 , C08J3/12 , C08J3/24
Abstract: The present invention relates to a method for preparing super absorbent polymer, and the method for preparing super absorbent polymer according to the present invention may reduce the content of non-reacted monomers in the super absorbent polymer, by using three kinds of polymerization initiators.
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公开(公告)号：US20180244857A1
公开(公告)日：2018-08-30
申请号：US15755296
申请日：2016-03-18
Applicant: LG Chem, Ltd.
Inventor： Seung Mo Lee , Gi Cheul Kim , Kyu Pal Kim
Abstract: The present invention relates to a method for a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention makes it possible to provide a super absorbent polymer in which characteristics such as a centrifuge retention capacity and an absorption rate are improved in a balanced manner.
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公开(公告)号：US10052611B2
公开(公告)日：2018-08-21
申请号：US15517341
申请日：2015-12-10
Applicant: LG Chem, Ltd.
Inventor： Seung Mo Lee , Gi Cheul Kim , Sang Gi Lee , Kum Hyoung Lee , Se Yeol Park
IPC: B01J20/26 , B01J20/30 , C08J3/12 , C08J3/24 , C08F120/06
CPC classification number: B01J20/261 , B01J20/267 , B01J20/3021 , B01J20/3085 , B01J2220/68 , C08F120/06 , C08F220/06 , C08J3/12 , C08J3/245 , C08J2333/02 , C08F2222/1013 , C08K5/42 , C08L33/02
Abstract: Provided is a method of preparing a superabsorbent polymer. In the method of preparing the superabsorbent polymer according to the present disclosure, a polymer resulting from polymerization of ethylene-based unsaturated monomers is subjected to a reassembling process by mixing with a compound of a particular Chemical Formula and water. According to the preparation method of the present disclosure, provided is a method of preparing a superabsorbent polymer having improved water holding capacity and a reduced content of residual monomers, thereby improving quality of final polymer products.
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