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公开(公告)号：US20240326014A1
公开(公告)日：2024-10-03
申请号：US18578177
申请日：2022-07-18
申请人： LG Chem, Ltd.
发明人： Woongchan Jeong , Yeonsoo Kim , Chang Hun Han , Jungmin Sohn , Myunghan Lee , Hyemin Lee , Jihye Ryu
CPC分类号： B01J20/267 , B01J20/28045 , B01J20/28085 , B01J20/3064 , B01J20/3085
摘要： Provided is a method of preparing a superabsorbent polymer. More particularly, provided is a method of preparing a superabsorbent polymer, in which a multi-step foaming process using a foam stabilizer is performed to form a hierarchical bubble distribution in the superabsorbent polymer to be prepared, thereby preparing the superabsorbent polymer having excellent absorption rate and absorption performance.
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公开(公告)号：US20240238759A1
公开(公告)日：2024-07-18
申请号：US18280511
申请日：2023-02-08
申请人： LG Chem, Ltd.
发明人： Jihye Ryu , Jungmin Sohn , Tae Young Won
CPC分类号： B01J20/267 , B01J20/28047 , B01J20/3021 , B01J20/3064 , B01J20/3085
摘要： A preparation method for a super absorbent polymer capable of minimizing bubble loss during foam polymerization. According to the preparation method of the present disclosure, a large number of small and uniform pores are formed to produce a super absorbent polymer having a high surface area. Since the super absorbent polymer exhibits an excellent absorption rate, it can be used in various products requiring high absorption properties.
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公开(公告)号：US20230330629A1
公开(公告)日：2023-10-19
申请号：US18008254
申请日：2021-11-17
申请人： LG Chem, Ltd.
发明人： Tae Young Won , Jungmin Sohn , Hyemin Lee , Jihye Ryu
IPC分类号： B01J20/28 , B01J20/32 , B01J20/26 , C08K7/02 , C08F220/06 , C08F222/10 , C08F2/44 , C08F2/26
CPC分类号： B01J20/28007 , B01J20/3282 , B01J20/261 , B01J20/28047 , C08K7/02 , C08F220/06 , C08F222/102 , C08F2/44 , C08F2/26 , C08K2201/004 , C08K2201/011 , B01J2220/68
摘要： A method of preparing a superabsorbent polymer and the superabsorbent polymer maintaining excellent basic absorption performances such as centrifuge retention capacity, while exhibiting improved gel strength and absorption rate are provided. The nanocellulose fiber is introduced during the preparation of the superabsorbent polymer to improve mechanical strength, to form a porous structure, and to rapidly absorb the surrounding water through capillary action and delivering the water to the inside of the superabsorbent polymer.
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公开(公告)号：US20220080387A1
公开(公告)日：2022-03-17
申请号：US17424047
申请日：2020-09-16
申请人： LG Chem, Ltd.
发明人： Young Jae Hur , Taebin Ahn , Dong Hoon Park , Jihye Ryu
IPC分类号： B01J20/26 , C08F120/06 , C08J3/24 , C08J3/12 , B01J20/30
摘要： A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. A superabsorbent polymer having improved rewetting property liquid permeability is also provided.
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公开(公告)号：US12071523B2
公开(公告)日：2024-08-27
申请号：US17424694
申请日：2020-09-16
申请人： LG Chem, Ltd.
发明人： Dong Hoon Park , Young Jae Hur , Taebin Ahn , Jihye Ryu
CPC分类号： C08J3/245 , B01J20/267 , C08F2/10 , C08F2/44 , C08F20/04 , C08K5/1515 , B01J2220/68 , C08J2333/02
摘要： A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked in the presence of a sodium polycarboxylate surfactant; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. The superabsorbent polymer provides improved rewetting property and liquid permeability.
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公开(公告)号：US20220098373A1
公开(公告)日：2022-03-31
申请号：US17424694
申请日：2020-09-16
申请人： LG Chem, Ltd.
发明人： Dong Hoon Park , Young Jae Hur , Taebin Ahn , Jihye Ryu
摘要： A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked in the presence of a sodium polycarboxylate surfactant; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. The superabsorbent polymer provides improved rewetting property and liquid permeability.
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公开(公告)号：US20240247110A1
公开(公告)日：2024-07-25
申请号：US18027543
申请日：2021-12-17
申请人： LG Chem, Ltd.
发明人： Hyemin Lee , Jungmin Sohn , Jihye Ryu , Chang Hun Han , Taebin Ahn
CPC分类号： C08J3/075 , C08J3/12 , C08J3/245 , C08J9/122 , C08K3/36 , C08K5/0025 , C08K5/098 , C08J2201/026 , C08J2205/022 , C08J2205/044 , C08J2333/02
摘要： The present disclosure relates to a super absorbent polymer and a method for preparing the same. More specifically, it relates to a super absorbent polymer including a plurality of micropores, specifically an average of 7 or more micropores per particle, having an average diameter of 100 μm or less and a maximum diameter of 300 μm or less, and thus exhibiting an improved absorption rate and a high surface tension, and a method for preparing the super absorbent polymer.
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公开(公告)号：US20230374232A1
公开(公告)日：2023-11-23
申请号：US18028282
申请日：2021-12-17
申请人： LG Chem, Ltd.
发明人： Jihye Ryu , Jungmin Sohn , Hyemin Lee , Chang Hun Han , Taebin Ahn
CPC分类号： C08J3/245 , C08J3/12 , C08J3/075 , C08J9/08 , C08F20/06 , C08J9/0052 , C08J2207/10 , C08J2333/02 , C08J2203/02
摘要： The present disclosure relates to a super absorbent polymer and a method for preparing the same. More specifically, it relates to a super absorbent polymer having an aspect ratio of particles above a certain level with large roughness, thereby exhibiting an improved absorption rate, and to a method for preparing the same.
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公开(公告)号：US20230331933A1
公开(公告)日：2023-10-19
申请号：US18027439
申请日：2021-12-17
申请人： LG Chem, Ltd.
发明人： Jungmin Sohn , Hyemin Lee , Jihye Ryu , Chang Hun Han , Taebin Ahn
CPC分类号： C08J3/075 , C08J3/122 , C08J3/245 , C08K5/098 , C08J2333/08
摘要： The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, the above method performs a polymerization reaction of a monomer in the presence of an aqueous dispersion of hydrophobic particles, and thus a super absorbent polymer having a high surface tension and an improved absorption rate can be prepared without deterioration in absorption properties.
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公开(公告)号：US20230119016A1
公开(公告)日：2023-04-20
申请号：US17796055
申请日：2021-08-17
申请人： LG Chem, Ltd.
发明人： Junwye Lee , Chang Hun Han , Tae Young Won , Jungmin Sohn , Hyemin Lee , Jihye Ryu , Minsu Kim
摘要： Provided is a method of preparing a superabsorbent polymer, which enables preparation of the superabsorbent polymer exhibiting an improved absorption rate while maintaining excellent absorption performances by minimizing a surface damage phenomenon of the superabsorbent polymer in a pneumatic conveying process during the preparation process of the superabsorbent polymer or in a pneumatic conveying process of the finally prepared superabsorbent polymer.
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