公开(公告)号：EP3521342A1

公开(公告)日：2019-08-07

申请号：EP18751986.3

申请日：2018-01-11

申请人： LG Chem, Ltd.

发明人： LEE, Hyemin ,  AHN, Taebin ,  LEE, Hyunsup ,  KIM, Yeon Soo

IPC分类号： C08J3/24 ,  C08K3/22 ,  C08J3/075 ,  C08J3/12

摘要： The present invention relates to a superabsorbent polymer that not only has excellent basic absorption performance, but also exhibits more improved absorption speed, permeability, etc., and a method for preparing the same. The superabsorbent polymer includes a base polymer powder including: a first crosslinked polymer of water soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized; and a surface crosslink layer that is formed on the base polymer powder, and further includes a second crosslinked polymer in which the first crosslinked polymer is additionally crosslinked by a C2-5 alkylene carbonate, wherein an absorption degree, SFC, an absorption speed, and a porosity fulfill specific ranges.

公开(公告)号：EP3875505A1

公开(公告)日：2021-09-08

申请号：EP19879723.5

申请日：2019-11-01

申请人： LG CHEM, LTD.

发明人： KIM, Chang Hun ,  KIM, Jong Gil ,  KIM, Hyun Min ,  KIM, Yeon Soo ,  CHO, Jeong Hun ,  HAN, Hye Jin ,  CHO, Joon Hee

IPC分类号： C08F220/46 ,  D01F9/22

摘要： Provided is an acrylonitrile-based copolymer for a carbon fiber which includes a sulfonate-based monomer unit, a carboxylic acid-based monomer unit, and an acrylonitrile-based monomer unit, and the acrylonitrile-based copolymer for a carbon fiber includes the sulfonate-based monomer unit at 0.55 to 1.55 mol%, and the carboxylic acid-based monomer unit at 0.60 to 1.40 mol%.

公开(公告)号：EP3513881A1

公开(公告)日：2019-07-24

申请号：EP18847726.9

申请日：2018-08-24

申请人： LG Chem, Ltd.

发明人： KIM, Yeon Soo ,  NAM, Hye Mi ,  LEE, Hyunsup ,  LEE, Sang Gi ,  HAN, Chang Hun ,  LEE, Myung Han ,  HAN, Hyejin

IPC分类号： B07C5/342 ,  G01N15/08 ,  G01N13/04 ,  G01N9/10 ,  G01N11/02 ,  A61F13/15 ,  G01N33/44 ,  G01N15/00 ,  G01N13/00

摘要： A SAP evaluation apparatus comprising: a main body installed with a lifting bar that is configured to be raised or lowered; a container portion installed under the lifting bar in the main body, comprising an internal containing space configured to contain an absorber; an operating portion connected to the lifting bar, comprising: a lifting plate that is configured to be raised or lowered within the internal containing space and to apply pressure to the absorber; and an injection portion configured to inject an ink in a direction of the absorber; a dispersion measurement portion for measuring dispersion of the ink through the absorber; and a controller installed at the main body configured to measure absorption of the ink into the absorber and to measure a swelling capacity of the absorber while the ink is injected into the absorber.

公开(公告)号：EP3438162A1

公开(公告)日：2019-02-06

申请号：EP17883446.1

申请日：2017-10-25

申请人： LG Chem, Ltd.

发明人： AHN, Tae Bin ,  KIM, Dong Hyun ,  KIM, Yeon Soo ,  LEE, Hyun Sup ,  HAN, Chang Sun ,  LEE, Myung Han

IPC分类号： C08J3/24 ,  C08L33/06 ,  C08J3/12 ,  C08J3/075 ,  C08F2/44 ,  C08K5/11

摘要： The present invention relates to a super absorbent polymer exhibiting more improved absorption rate and liquid permeability, as well as having excellent basic absorption performance, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) (20 cm) for a physiological saline solution (0.9 wt% aqueous sodium chloride solution) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) for a physiological saline solution (0.685 wt% aqueous sodium chloride solution) of 35 (·10 -7 cm 3 ·s/g) or more, and T-20 of 180 seconds or less which indicates the time required for absorbing 1 g of the super absorbent polymer to 20 g of aqueous solution of 0.9 wt% sodium chloride and 0.01 wt% alcohol ethoxylate having 12 to 14 carbon atoms under pressure of 0.3 psi.

公开(公告)号：EP3875258A1

公开(公告)日：2021-09-08

申请号：EP19878266.6

申请日：2019-11-01

申请人： LG Chem, Ltd.

发明人： HUH, Doo Young ,  KIM, Yeon Soo ,  KIM, You Kyeong ,  HONG, Kyung Ki ,  RAH, Kyun Il ,  LEE, Young Min ,  CHO, Woo Yong

IPC分类号： B29D11/00 ,  B29C55/02 ,  G02B5/30 ,  G02B1/04 ,  B29K33/04

摘要： The present application can provide a polarizer showing low orthogonal transmittance for visible light and high orthogonal transmittance for near infrared rays, and a polarizing plate comprising the same, wherein such a polarizer or polarizing plate can be used in a variety of devices using visible light and near infrared rays. A method for preparing the polarizer and a camera are also provided.