公开(公告)号：US20180194904A1

公开(公告)日：2018-07-12

申请号：US15743841

申请日：2016-11-04

Applicant: LG Chem, Ltd.

Inventor： Kum Hyoung Lee ,  Gi Cheul Kim ,  Sung Soo Park ,  Ye Sol Yang ,  Bo Hyun Seong

IPC: C08J3/075 ,  C08J3/24 ,  C08J9/10 ,  C08K3/36 ,  C08K5/00 ,  C08F20/56 ,  C08F20/06 ,  C08L57/10 ,  C08L33/02

CPC classification number: C08J3/075 ,  C08F20/06 ,  C08F20/56 ,  C08F220/06 ,  C08F2500/08 ,  C08F2500/24 ,  C08F2800/20 ,  C08J3/24 ,  C08J9/0066 ,  C08J9/08 ,  C08J9/10 ,  C08J2201/026 ,  C08J2203/02 ,  C08J2205/022 ,  C08J2333/02 ,  C08K3/36 ,  C08K5/0025 ,  C08L33/02 ,  C08L35/00 ,  C08L57/10 ,  C08F2222/1013

Abstract: The present invention relates to a superabsorbent polymer having an improved adsorption rate and a high bulk density, and a preparation method thereof.

公开(公告)号：US09937482B2

公开(公告)日：2018-04-10

申请号：US15035968

申请日：2014-12-10

Applicant: LG Chem, Ltd.

Inventor： Gi Cheul Kim ,  Sung Soo Park

IPC: B01J20/26 ,  C08F2/10 ,  C08J3/075 ,  C08J3/24 ,  C08F2/48 ,  B01J20/28 ,  B01J20/30 ,  C08J3/12 ,  C08F220/06

CPC classification number: B01J20/267 ,  B01J20/261 ,  B01J20/28004 ,  B01J20/28016 ,  B01J20/3021 ,  B01J20/3085 ,  C08F2/10 ,  C08F2/48 ,  C08F220/06 ,  C08J3/075 ,  C08J3/12 ,  C08J3/24 ,  C08J3/245 ,  C08J2333/02

Abstract: Disclosed herein are a superabsorbent polymer resin comprising agglomerated particles with a size of 450 μm or less, and a method for preparing the same. The superabsorbent polymer resin exhibits significant improvement in absorption rate and permeability.

公开(公告)号：US20170361305A1

公开(公告)日：2017-12-21

申请号：US15323142

申请日：2015-07-30

Applicant: LG Chem, Ltd.

Inventor： Ju Eun Kim ,  Gi Cheul Kim ,  Sung Soo Park ,  Hyeon Choi ,  Hee Jung Choi ,  Hyo Sook Joo ,  Ki Youl Yoon

IPC: B01J20/26 ,  C08J3/24 ,  B01J20/30 ,  C08F220/06

CPC classification number: B01J20/267 ,  B01J20/261 ,  B01J20/3021 ,  B01J20/3085 ,  C08F220/06 ,  C08J3/075 ,  C08J3/245 ,  C08J2333/02 ,  C08K3/346 ,  C08K2201/011 ,  C08L33/02

Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. More specifically, the present invention relates to superabsorbent polymer with improved properties, comprising a dual cross-linking structure derived from alkyleneglycol multifunctional (meth)acrylate and modified nanoclay, and a method for preparing the same. According to the present invention, the modified nanoclay and alkyleneglycol multifunctional (meth)acrylate are used as internal crosslinking agents in the process of preparing superabsorbent polymer, thus contributing to improvement in the cross-linking degree and the properties of superabsorbent polymer.

公开(公告)号：US20170297002A1

公开(公告)日：2017-10-19

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 ,  C08J3/24 ,  B01J20/30 ,  C08F120/06 ,  C08J3/12

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.

公开(公告)号：US20160208022A1

公开(公告)日：2016-07-21

申请号：US14917235

申请日：2014-09-29

Applicant: LG CHEM, LTD.

Inventor： Gi Cheul Kim ,  Sang Gi Lee ,  Kyu Pal Kim ,  Sung Soo Park

IPC: C08F2/50

CPC classification number: C08F2/50 ,  C08F2/10 ,  C08F2/48 ,  C08F6/008 ,  C08F220/18 ,  C08J3/075 ,  C08L101/14

Abstract: This disclosure relates to a method for preparing super absorbent polymer. The method for preparing super absorbent polymer according to the present invention comprises the steps of performing photopolymerization of a monomer composition comprising water soluble ethylene unsaturated monomers, a thermal polymerization initiator and a photopolymerization initiator at a temperature of 30 to 55° C.; performing a thermal polymerization and a photopolymerization at a temperature of 55 to 120° C. to form a hydrogel polymer; and drying the hydrogel polymer. According to the present invention, by comprising two polymerization steps including performing photopolymerization at low temperature and then performing thermal polymerization or photopolymerization at high temperature, super absorbent polymer having improved physical properties may be obtained.

Abstract translation: 本公开涉及一种制备高吸水性聚合物的方法。 本发明的高吸水性聚合物的制造方法包括在30〜55℃的温度下进行包含水溶性乙烯不饱和单体，热聚合引发剂和光聚合引发剂的单体组合物的光聚合的工序。 在55〜120℃的温度下进行热聚合和光聚合，形成水凝胶聚合物; 并干燥水凝胶聚合物。 根据本发明，通过包括两个聚合步骤，包括在低温下进行光聚合，然后在高温下进行热聚合或光聚合，可以获得具有改善的物理性能的高吸水性聚合物。