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公开(公告)号：US20230381788A1
公开(公告)日：2023-11-30
申请号：US18031871
申请日：2022-06-20
申请人： LG CHEM, LTD.
发明人： Ui Seok CHUNG , Yoon Jae MIN , Gicheul KIM , Tae Yun KIM , Heechang WOO , Sangwon HAN
CPC分类号： B02C18/065 , B02C18/2216 , B02C18/2258
摘要： The micronizing apparatus includes: a body having a transfer space where hydrogel is transferred, and a discharge space where ground hydrogel is discharged; a rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the first rotation shaft, to transfer the hydrogel along a longitudinal direction of the body; a rotor installed on the rotation shaft so as to rotate together with the rotation shaft, wherein a plurality of rotor blades and a plurality of rotor recesses are alternately formed along a circumferential direction on an outer perimeter part of the rotor; and a stator surrounding the rotor with an air gap between the rotor and the stator, which is a predetermined distance between an outside diameter of the rotor and an inside diameter of the stator, and is fixed to the body
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公开(公告)号：US20230149898A1
公开(公告)日：2023-05-18
申请号：US17919273
申请日：2021-11-10
申请人： LG CHEM, LTD.
发明人： Seul Ah LEE , Yoon Jae MIN , Ui Seok CHUNG , Gicheul KIM
CPC分类号： B01J20/267 , B01J20/28078 , B01J20/3282 , B01J2220/68
摘要： The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer with improved permeability and anti-caking efficiency while having a high absorption rate by adding an additive having a specific structure to the hydrogel polymer polymerized in the presence of an encapsulated foaming agent, followed by coarse pulverization.
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公开(公告)号：US20240278210A1
公开(公告)日：2024-08-22
申请号：US18566083
申请日：2022-06-20
申请人： LG CHEM, LTD.
发明人： Seul Ah LEE , Yoon Jae MIN , Gyunhyeok AHN , Gicheul KIM , Hee Kwan PARK , Kyunghoon MIN
CPC分类号： B01J20/261 , B01J20/28004 , B01J20/28047 , B01J20/3021 , B01J20/3042 , B01J20/3078 , B01J20/3085 , B01J2220/68
摘要： The present disclosure relates to a method for preparing a super absorbent polymer, and more particularly to a method for preparing a super absorbent polymer in which polymerization can be stably progressed by a continuous process in the polymerization stage
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公开(公告)号：US20230249155A1
公开(公告)日：2023-08-10
申请号：US18015686
申请日：2021-12-07
申请人： LG CHEM, LTD.
发明人： Yoon Jae MIN , Gicheul KIM , Tae Yun KIM , Jungmin LEE , Jae Hoon CHOI
CPC分类号： B01J20/261 , C08F2/44 , C08F2/46 , C08F2/10 , C08K5/101 , B01J20/3007 , B01J20/3085 , B01J20/28085
摘要： This invention relates to a method for preparing superabsorbent polymer. More specifically, this invention relates to a method for preparing superabsorbent polymer that realizes excellent drying efficiency, and thus, effectively inhibits warping of resin.
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公开(公告)号：US20220242990A1
公开(公告)日：2022-08-04
申请号：US17612429
申请日：2021-01-20
申请人： LG CHEM, LTD.
发明人： Yoon Jae MIN , Gicheul KIM , Young Cheol JUNG , Wonchan PARK
IPC分类号： C08F290/06 , C08K5/11
摘要： The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer capable of significantly reducing the amount of fine powder generated during the process by mixing a hydrogel polymer with an additive having a specific structure, pulverizing it, and then drying it with a paddle-type dryer.
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公开(公告)号：US20240278211A1
公开(公告)日：2024-08-22
申请号：US18566080
申请日：2022-06-20
申请人： LG CHEM, LTD.
发明人： Sangwon HAN , Gicheul KIM , Se Yeol PARK , Tae Yun KIM
IPC分类号： B01J20/26 , B01J20/28 , B01J20/30 , C08F220/06
CPC分类号： B01J20/267 , B01J20/28004 , B01J20/28016 , B01J20/3021 , B01J20/3078 , B01J20/3085 , C08F220/06 , C08F2810/20 , C08F2810/50
摘要： This invention relates to a method for preparing super absorbent polymer and super absorbent polymer. More specifically, this invention relates to a method for preparing super absorbent polymer that can inhibit generation of fine particles during the preparation process, and simultaneously, realize excellent vortex time, by controlling the process conditions of a drying step to prepare base resin powder having relatively high moisture content, and super absorbent polymer.
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公开(公告)号：US20220258380A1
公开(公告)日：2022-08-18
申请号：US17630576
申请日：2020-11-19
申请人： LG CHEM, LTD.
发明人： Jinuk CHOI , Heechang WOO , Gicheul KIM , Yoon Jae MIN
摘要： A complex minute cutting apparatus for a superabsorbent hydrogel is disclosed. The complex minute cutting apparatus includes: a barrel body in which a transfer space through which a hydrogel is transferred is formed and a discharge part is formed at a side surface thereof; a transfer unit installed in the barrel body to transfer the hydrogel in the transfer space; and a plurality of cutting modules installed in the transfer unit to pulverize the hydrogel and discharging it to an outside of the discharge unit in a cut state.
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公开(公告)号：US20220193634A1
公开(公告)日：2022-06-23
申请号：US17611332
申请日：2020-12-18
申请人： LG CHEM, LTD.
发明人： Yoon Jae MIN , Gicheul KIM , Ki Hyun KIM , Sung Soo PARK , Jinuk CHOI , Tae Yun KIM , Heechang WOO
摘要： The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, and significantly reducing the amount of fine powder generated during the process.
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9.发明公开公开(公告)号：US20240026040A1
公开(公告)日：2024-01-25
申请号：US18023671
申请日：2022-06-20
申请人： LG CHEM, LTD.
发明人： Gyunhyeok AHN , Yoon Jae MIN , Seul Ah LEE , Gicheul KIM , Hee Kwan PARK , Kyunghoon MIN
IPC分类号： C08F2/01 , B01J20/26 , B01J20/28 , C08F120/06
CPC分类号： C08F2/01 , B01J20/261 , B01J20/267 , B01J20/28047 , C08F120/06 , B01J2220/68
摘要： A continuous polymerization reactor for super absorbent polymer is disclosed. The continuous polymerization reactor includes a cylindrical body; a discharge part with a diameter decreasing downward, positioned at a lower part of the body; an inlet positioned at an upper part of and connected to the body, into which a monomer composition is introduced; an outlet positioned at a lower part of the discharge part, from which hydrogel polymer is discharged; and a discharge valve opening or closing the outlet, wherein a ratio (H1/D1) of a sum (H1) of a height of the body and a height of the discharge part to a diameter (D1) of the body is 2 to 4. In addition, a continuous polymerization reaction system comprising the continuous polymerization reactor is also disclosed.
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公开(公告)号：US20230338925A1
公开(公告)日：2023-10-26
申请号：US18023648
申请日：2022-06-20
申请人： LG CHEM, LTD.
发明人： Ui Seok CHUNG , Yoon Jae MIN , Gicheul KIM , Tae Yun KIM , Heechang WOO , Sangwon HAN
CPC分类号： B01J20/3021 , B01J20/267 , B01J20/28047 , B02C18/2258 , B02C18/143 , B02C18/24 , B29B9/12 , B29B2009/125
摘要： A micronizing apparatus for hydrogel of super absorbent polymer includes: a body having a transfer space where hydrogel is transferred, and a discharge space where ground hydrogel is discharged; a first rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the first rotational shaft to transfer the hydrogel along a longitudinal direction of the body; a hole plate fixed to the body and having a plurality of through holes; and a second rotation shaft disposed in the discharge space, wherein a cutter is attached and spaced from the hole plate by a predetermined distance, to grind the hydrogel transferred by the screw, wherein a rotation speed of the first rotation shaft and a rotation speed of the second rotation shaft may be independently controlled.
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