Abstract: The present disclosure relates to a polyamide block copolymer and a polyamide film including the same. The polyamide block copolymer according to the present disclosure makes it possible to provide a polyamide film exhibiting excellent mechanical properties while being colorless and transparent.
Type:
Grant
Filed:
April 2, 2019
Date of Patent:
March 12, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Bi Oh Ryu, Soonyong Park, Youngseok Park, Kwanyeol Paek, Young Ji Tae, Il Hwan Choi
Abstract: The present disclosure provides a compound represented by the following Chemical Formula 1, and an organic light emitting device including the same. The compound is used as a material of an organic material layer of the organic light emitting device.
Type:
Grant
Filed:
July 3, 2019
Date of Patent:
March 12, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Yongbum Cha, Jaegoo Lee, Sung Kil Hong, Sung Jae Lee, Hyeon Jin Mun
Abstract: A separator having low resistance, suitable porosity and electrolyte retention while ensuring heat resistance is provided. The separator includes a porous substrate and a low-resistance coating layer formed on at least one surface of the porous substrate, wherein the low-resistance coating layer includes node(s) containing inorganic particles and a polymer resin covering at least a part of the surfaces of inorganic particles, and filament(s) formed from the polymer resin of the node in a thread-like shape, at least one filament extended from one node is formed, and the filaments are arranged in such a manner that they connect one node with another node.
Abstract: Provided is an aerogel blanket and a method for producing the same, wherein a catalyzed sol I sufficiently and uniformly impregnated into a blanket in an impregnation tank, and the catalyzed sol is allowed to stay in the impregnation tank for a specific time to control fluidity while achieving a viscosity at which the catalyzed sol can be easily introduced into the blanket, thereby forming a uniform aerogel in the blanket. As a result, the uniformity of pore structure and thermal insulation performance of an aerogel blanket are improved, the loss of raw materials is reduced through the impregnation process, the occurrence of process problems is reduced, and the generation of dust is reduced.
Type:
Grant
Filed:
August 28, 2020
Date of Patent:
March 12, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Young Hun Kim, Se Won Baek, Sung Min Yu, Kyung Seok Min, Hyun Woo Jeon, Sang Woo Park, Bong June Kim
Abstract: The present specification relates to a conductive structure body, a method for manufacturing the same, and an electrode and an electronic device including the conductive structure body.
Type:
Grant
Filed:
March 28, 2016
Date of Patent:
March 12, 2024
Assignee:
LG CHEM LTD.
Inventors:
Ilha Lee, Seung Heon Lee, Song Ho Jang, Dong Hyun Oh, Ji Young Hwang, Ki-Hwan Kim, Han Min Seo, Chan Hyoung Park, Sun Young Park
Abstract: The present disclosure relates to a preparation method of a super absorbent polymer non-woven fabric and super absorbent polymer fibers prepared therefrom. According to the preparation method of the present disclosure, it is possible to provide super absorbent polymer fibers exhibiting high flexibility and fast absorption rate in the form of long fibers.
Type:
Grant
Filed:
October 26, 2018
Date of Patent:
March 12, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Chanjoong Kim, Woongchan Jeong, Chang Sun Han, Jae Hoon Choe, Taebin Ahn, Chang Hun Lee
Abstract: Disclosed is a novel diamine compound in which an imide ring is directly bonded to a (hetero)aryl ring in a molecule, and a polyimide film prepared by polymerizing the novel diamine compound exhibits improved thermal properties and storage stability.
Type:
Grant
Filed:
January 22, 2020
Date of Patent:
March 12, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Minju Kim, Jinyoung Park, Hoyong Lee, Cheol Jun Song
Abstract: An optical device is disclosed herein. In some embodiments, a optical device includes a liquid crystal element having a top surface, a bottom surface, and sides separating the top surface and the bottom surface, and an outer layer surrounding the sides of the liquid crystal element, wherein the liquid crystal element comprises a first base layer, a second base layer, a liquid crystal layer positioned between the first base layer and the second base layer, a pressure-sensitive adhesive layer positioned between the first base layer and the liquid crystal layer, and a spacer to maintain a gap between the first base layer and the second base layer, wherein the optical device satisfies Equation 1: ?T2×0.4?T1?T2?T2×0.4??[Equation 1] wherein, T1 is a thickness of the outer layer, and T2 is a thickness of the liquid crystal element.
Type:
Grant
Filed:
October 28, 2021
Date of Patent:
March 12, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Jung Woon Kim, Jung Sun You, Doo Young Huh, Dong Hyun Oh
Abstract: Provided is a method of preparing a superabsorbent polymer. More particularly, provided is a method of preparing a superabsorbent polymer, in which variations in centrifugal retention capacity of superabsorbent polymer particles to be prepared are reduced by controlling heat treatment temperature conditions in a surface crosslinking step, thereby improving absorption properties of the superabsorbent polymer finally prepared.
Abstract: A method for manufacturing a catalyst for oxidative dehydrogenation reaction, a catalyst for oxidative dehydrogenation reaction, and a method for manufacturing butadiene using the same.
Type:
Grant
Filed:
December 24, 2020
Date of Patent:
March 5, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Sunhwan Hwang, Jun Kyu Han, San Jin Han, Dong Hyun Ko, Kyoung Yong Cha
Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: Y1 is O or S; Ar1 is a substituted C6-60 aryl; or a substituted or unsubstituted C1-60 heteroaryl containing one or more heteroatoms selected from among O, N, Si, and S; L is a single bond; a substituted or unsubstituted C6-60 arylene; or a substituted or unsubstituted C1-60 heteroarylene containing one or more heteroatoms selected from among O, N, Si, and S; R1 to R3 are each independently hydrogen; deuterium; a halogen; cyano; nitro; amino; a substituted or unsubstituted C1-60 alkyl; a substituted or unsubstituted C1-60 haloalkyl; or a substituted or unsubstituted: C1-60 alkoxy, C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, or C1-60 heteroaryl containing one or more heteroatoms selected from among N, O, and S, and n1 to n3 are each independently 1 to 5, and an organic light emitting device including the same.
Type:
Grant
Filed:
April 24, 2019
Date of Patent:
March 5, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Min Woo Jung, Dong Hoon Lee, Boonjae Jang, Jungha Lee, Su Jin Han, Seulchan Park
Abstract: Provided is a method of preparing a superabsorbent polymer. More specifically, provided is a method of preparing a superabsorbent polymer capable of exhibiting improved initial absorbency and a rapid absorption rate by polymerizing monomers having acidic groups, of which part is neutralized with a basic material including potassium hydroxide, in the presence of an encapsulated foaming agent.
Type:
Grant
Filed:
December 10, 2019
Date of Patent:
March 5, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Seul Ah Lee, Gicheul Kim, Dae Woo Nam, Ki Hyun Kim, Jun Kyu Kim, Young Jae Hur
Abstract: The present invention relates to a heterocyclic compound, represented by chemical formula 1, exhibiting a diacylglycerol kinase inhibitor activity, a pharmaceutical composition comprising same as an active ingredient, and a use thereof.
Type:
Application
Filed:
November 25, 2021
Publication date:
February 29, 2024
Applicant:
LG CHEM, LTD.
Inventors:
Byung Gyu KIM, Su Young YOON, Young Shin KWAK, Chang Young JANG
Abstract: The present invention relates to a method of non-destructively measuring a thickness of a reinforcement membrane, and more particularly, to a method of non-destructively measuring a thickness of a hydrogen ion exchange reinforcement membrane for a fuel cell, in which the reinforcement membrane has a symmetric three-layer structure including a reinforcement base layer and pure water layers disposed at opposing sides of the reinforcement base layer, including performing total non-destructive inspection and omitting a process of analyzing a position by means of a thickness peak of a power spectrum of the respective layers of the reinforcement membrane.
Type:
Grant
Filed:
May 20, 2019
Date of Patent:
February 27, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Sung-Hyun Yun, Joo-Yong Park, Ji-Hun Kim, Jae-Choon Yang
Abstract: The present invention relates to a catalyst composition containing: one or more selected from the group consisting of a transition metal compound represented by Formula 1 and a transition metal compound represented by Formula 3, and dialkyl L-tartrate; a cleaning liquid composition containing the catalyst composition; and a method of cleaning a polymerization apparatus using the cleaning liquid composition, wherein all the variables are described herein.
Abstract: The present disclosure provides a composition for preparing a vinyl chloride-based polymer, including a vinyl chloride-based first seed; a vinyl chloride-based second seed; an initiator composition including a water-soluble initiator and an oil-soluble initiator; a reducing agent; and a vinyl chloride-based monomer, wherein a metal catalyst is not included in the composition, and a method for preparing a vinyl chloride-based polymer using the same.
Type:
Grant
Filed:
October 7, 2019
Date of Patent:
February 27, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Kyung Seog Youk, Heung Kwon Bae, Jung Rae Lee, Hyun Min Lee, Joong Chul Lim, Min Jeong Kang
Abstract: A core-shell copolymer, a method of making the same, and a thermoplastic resin composition including the same are disclosed herein. In some embodiments, a core-shell copolymer includes a core and a shell surrounding the core, the core includes a conjugated diene-based monomer-derived repeating unit and a phosphate-based cross-linking agent-derived cross-linking part represented by Formula 1, and the shell includes a first alkyl (meth)acrylate monomer-derived repeating unit, a second alkyl (meth)acrylate monomer-derived repeating unit, and a sulfonate-based ionic monomer-derived repeating unit represented by Formula 2. The core is 68 parts to 92 parts and the shell is 8 parts to 32 parts, based on 100 parts of the core-shell copolymer, the core has a swell index of 2.7 to 10.9, the shell includes 1 wt % to 16 wt % of the sulfonate-based ionic monomer-derived repeating unit, and the shell has a weight average molecular weight of 105,000 g/mol to 645,000 g/mol.
Type:
Grant
Filed:
October 11, 2019
Date of Patent:
February 27, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Kwang Jin Lee, Yoon Ho Kim, Sang Il Nam, Kyung Bok Sun, Chang No Lee, Sang Hoon Han
Abstract: An acrylic emulsion pressure sensitive adhesive composition is provided. The acrylic emulsion pressure sensitive adhesive composition, due to pH-dependent properties, exhibits stable adhesion when attached to an adherend, but when it needs to be removed, it can be easily removed without residue using an alkaline solution. Thus, if the acrylic emulsion pressure sensitive adhesive composition is used as a pressure sensitive adhesive for a label of a plastic packaging article, the label can be easily removed during a recycling process, thus improving recycling efficiency.
Abstract: The present invention relates to a conductive concentrated resin composition including (a) 100 parts by weight of a base resin including 50 to 95% by weight of a polyamide resin, 2.5 to 20% by weight of a polar polymer, and 2.5 to 30% by weight of a non-polar polymer, (b) 10 to parts by weight of a carbon nanofibril, (c) 0.5 to 5 parts by weight of a carbon nanoplate, and (d) 0.5 to 4 parts by weight of nanoclay; a conductive polyamide resin composition including the conductive concentrated resin composition; a method of preparing the conductive concentrated resin composition; and a molded article including the conductive polyamide resin composition.
Abstract: A method for evaluating physical properties of a melt-blown plastic resin, and, more specifically, to a novel method for evaluating physical properties are provided. When a particular plastic resin is processed by a melt-blown process, a stretching diameter value after the process of the plastic resin can be accurately derived from a physical property value measured using a specimen of the resin.
Type:
Grant
Filed:
March 28, 2023
Date of Patent:
February 27, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Hyunsup Lee, Seok Hwan Kim, Heekwang Park, Ki Soo Lee, Sangjin Jeon, Myunghan Lee