公开(公告)号：EP3181638A4

公开(公告)日：2018-03-14

申请号：EP15828970

申请日：2015-07-30

申请人： LG CHEMICAL LTD

发明人： KIM JU EUN ,  KIM GI CHEUL ,  PARK SUNG SOO ,  CHOI HYEON ,  CHOI HEE JUNG ,  JOO HYO SOOK ,  YOON KI YOUL

IPC分类号： C08L33/06 ,  C08J3/075 ,  C08J3/24 ,  C08K3/34

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

摘要： 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：EP3196231A4

公开(公告)日：2018-05-23

申请号：EP15879096

申请日：2015-12-29

申请人： LG CHEMICAL LTD

发明人： PARK SUNG SOO ,  KIM GI CHEUL ,  KIM JU EUN ,  CHOI HYEON ,  JOO HYO SOOK ,  PARK SUNG HYUN ,  CHOI HEE JUNG ,  YOON KI YOUL

IPC分类号： B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  C08J3/075 ,  C08J3/12 ,  C08K9/06

CPC分类号： B01J20/267 ,  A61F2013/530481 ,  B01J20/103 ,  B01J20/265 ,  B01J20/28004 ,  B01J20/28007 ,  B01J20/28011 ,  B01J20/28059 ,  B01J20/28061 ,  B01J20/28064 ,  B01J20/3021 ,  B01J20/3085 ,  B01J20/3204 ,  B01J20/3282 ,  C08J3/075 ,  C08J3/12 ,  C08J3/24 ,  C08J3/245 ,  C08J2300/14 ,  C08K9/06

摘要： 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.

公开(公告)号：EP3006470A4

公开(公告)日：2016-11-09

申请号：EP14848361

申请日：2014-09-29

申请人： LG CHEMICAL LTD

发明人： KIM GI CHEUL ,  LEE SANG GI ,  KIM KYU PAL ,  PARK SUNG SOO

IPC分类号： C08F2/10 ,  C08F2/48 ,  C08F2/50 ,  C08F6/00 ,  C08F20/10 ,  C08J3/075 ,  C08L101/14

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

摘要： 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.

公开(公告)号：EP3133090A4

公开(公告)日：2018-01-10

申请号：EP15877193

申请日：2015-12-10

申请人： LG CHEMICAL LTD

发明人： LEE SEUNG MO ,  KIM GI CHEUL ,  LEE KUM HYOUNG ,  PARK SE YEOL

IPC分类号： C08F2/10 ,  A61F13/53 ,  A61L15/60 ,  B01J20/26 ,  C08F2/44 ,  C08F20/06 ,  C08J3/00 ,  C08J3/075 ,  C08J3/12 ,  C08J3/24

CPC分类号： C08J3/005 ,  A61F13/53 ,  A61L15/60 ,  B01J20/26 ,  B01J20/267 ,  B01J2220/68 ,  C08F2/10 ,  C08F2/44 ,  C08F20/06 ,  C08F2810/20 ,  C08J3/075 ,  C08J3/12 ,  C08J3/24 ,  C08J3/245 ,  C08J2333/02 ,  C08J2433/00

摘要： 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.

公开(公告)号：EP3015479A4

公开(公告)日：2016-12-14

申请号：EP14840223

申请日：2014-07-17

申请人： LG CHEMICAL LTD

发明人： RYU CHUL HEE ,  KIM GI CHEUL

IPC分类号： C08F2/10 ,  C08F6/00 ,  C08J3/12 ,  C08L101/14

CPC分类号： B01J20/267 ,  B01J20/28016 ,  C08F2/10 ,  C08F6/008 ,  C08J3/075 ,  C08J3/12 ,  C08J3/245 ,  C08J2333/02 ,  C08L101/14

摘要： The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention comprises the steps of: carrying out a thermal polymerization or a photopolymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator to form a hydrogel polymer; drying the hydrogel polymer;pulverizing the dried polymer; mixing a fine powder having a particle diameter of 180 µm or less and a polymer having a particle diameter of 300 µm or more among the pulverized polymer; and adding steam to the mixture to carry out a reassembling. According to the present invention, the super absorbent polymer having a high fine powder aggregation strength can be obtained.

公开(公告)号：EP3178855A4

公开(公告)日：2018-01-03

申请号：EP15867386

申请日：2015-12-10

申请人： LG CHEMICAL LTD

发明人： LEE SEUNG MO ,  KIM GI CHEUL ,  LEE KUM HYOUNG ,  PARK SE YEOL

IPC分类号： C08F20/06 ,  B01J20/30 ,  C08F2/10 ,  C08F2/44 ,  C08F6/24 ,  C08J3/075 ,  C08J3/24

CPC分类号： 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

摘要： 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：EP2711180A4

公开(公告)日：2015-02-25

申请号：EP12785782

申请日：2012-05-16

申请人： LG CHEMICAL LTD

发明人： MA SEUNG LAC ,  KIM DONG RYUL ,  HWANG JANG YEON ,  KIM GI CHEUL ,  KO MYEONG GEUN ,  RYU SANG UK ,  LEE HO JUN

IPC分类号： B32B7/12 ,  C08J7/04 ,  C08J7/06 ,  C08L67/04 ,  C08L83/04 ,  C23C14/08 ,  C23C16/40 ,  G02F1/1333 ,  H01L51/00 ,  H01L51/52

CPC分类号： B32B27/28 ,  B32B7/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/36 ,  B32B2255/10 ,  B32B2255/20 ,  B32B2255/24 ,  B32B2255/28 ,  B32B2307/7242 ,  B32B2307/7265 ,  B32B2307/734 ,  B32B2457/00 ,  C08J7/045 ,  C08J2367/02 ,  C08J2483/04 ,  G02F1/133305 ,  G02F1/133345 ,  H01L51/0097 ,  H01L51/5256 ,  Y10T156/10 ,  Y10T428/24975 ,  Y10T428/31663

公开(公告)号：EP3088446A4

公开(公告)日：2017-05-24

申请号：EP15830082

申请日：2015-08-04

申请人： LG CHEMICAL LTD

发明人： JOO HYO SOOK ,  YOON KI YOUL ,  KIM GI CHEUL ,  KIM JU EUN ,  CHOI HYEON ,  CHOI HEE JUNG ,  PARK SUNG SOO ,  PARK SUNG HYUN ,  LEE MYUNG HAN

IPC分类号： B01J20/26 ,  A61L15/24 ,  A61L15/60 ,  B01J20/28 ,  B01J20/30 ,  C08J3/075 ,  C08J3/24 ,  C08K3/00 ,  C08K5/00 ,  C08L33/06

CPC分类号： C08J3/245 ,  A61L15/24 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28059 ,  B01J20/28061 ,  B01J20/28064 ,  C08F220/06 ,  C08F222/02 ,  C08F292/00 ,  C08J3/075 ,  C08J3/24 ,  C08J2333/02 ,  C08K3/00 ,  C08K5/00 ,  C08F2222/1013 ,  C08F2230/085

摘要： The present invention relates to a superabsorbent polymer that has more improved gel strength and is improved in both water retention capacity (centrifuge retention capacity, CRC) and absorption ability under pressure (AUP) because of an optimized cross-linked structure of a base resin powder inside a cross-linked surface layer, and a preparation method thereof. The superabsorbent polymer includes a base resin powder including a 1st cross-linked polymer of a water-soluble ethylenic unsaturated monomer having acid groups of which at least a part is neutralized, and a cross-linked surface layer that includes a 2nd cross-linked polymer further cross-linked from the 1st cross-linked polymer and is formed on the base resin powder, wherein an inorganic particle is chemically bonded to the 1st cross-linked polymer by the medium of a cross-linking bond, an oxygen-containing bond (-O-), or a nitrogen-containing bond (-NR-, where R is hydrogen or a C1-C3 alkyl or an amide bond).

摘要翻译： 本发明涉及一种超吸收性聚合物，其由于基础树脂粉末的优化的交联结构而具有更高的凝胶强度并且在保水容量（离心保留容量，CRC）和压力下的吸收能力（AUP） 在交联表面层内部，以及其制备方法。 超吸收性聚合物包含基础树脂粉末和交联表面层，所述基础树脂粉末包含具有酸基的至少部分被中和的水溶性烯键式不饱和单体的第一交联聚合物和包含第二交联聚合物 与第一交联聚合物进一步交联，并在基础树脂粉末上形成，其中无机颗粒通过交联键，含氧键（ -O-）或含氮键（-NR-，其中R是氢或C1-C3烷基或酰胺键）。

公开(公告)号：EP2787025A4

公开(公告)日：2015-12-02

申请号：EP13854221

申请日：2013-11-15

申请人： LG CHEMICAL LTD

发明人： LEE YONG HUN ,  KIM KYU PAL ,  HAN CHANG SUN ,  KIM GI CHEUL ,  RYU CHUL HEE

IPC分类号： C08J3/075 ,  A61L15/22 ,  A61L15/60 ,  B01J20/26 ,  C08F20/10 ,  C08F220/06 ,  C08J3/24 ,  C08L33/08

CPC分类号： C08L33/08 ,  A61L15/60 ,  B01J20/261 ,  B01J20/28004 ,  B01J20/28047 ,  B01J20/3021 ,  B01J2220/68 ,  C08F220/06 ,  C08J3/075 ,  C08J3/245 ,  C08J2333/08 ,  C08J2433/08 ,  C08L2205/025 ,  C08L23/04 ,  C08F2222/1013

摘要： The present invention relates to a method of preparing a super absorbent polymer (SAP) and a SAP prepared therefrom. The method of the present invention includes the steps of preparing a first hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; preparing a second hydrogel polymer by carrying out a thermal polymerization or photo polymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying and milling the first hydrogel polymer and distributing the first hydrogel polymer into a fine powder having a particle diameter below 150µm and a base resin having a particle diameter of 150µm to 850µm; fabricating a reassembled body of the fine powder by mixing the fine powder and the second hydrogel polymer; and mixing the reassembled body of the fine powder with the first hydrogel polymer, and drying and milling the same, wherein the second hydrogel polymer has higher water holding capacity than the first hydrogel polymer. According to the present invention, the SAP having high water holding capacity and fine powder aggregation strength without decrease of absorbing power under pressure and penetrability can be obtained.