Abstract: Provided is a positive electrode active material which includes an inner region that is a region from the center of the positive electrode active material particle to R/2; and an outer region that is a region from R/2 to the surface of the positive electrode active material particle, wherein R is a distance from the center of the positive electrode active material particle to the surface thereof. The positive electrode active material further includes 30% to 80% of crystallites A with respect to a total number of crystallites in the outer region of the positive electrode active material, the crystallites A having high crystallite long-axis orientation degree and crystallite c-axis orientation degree. Thus, the positive electrode active material can achieve excellent capacity characteristics and service life characteristics.
Type:
Application
Filed:
March 22, 2022
Publication date:
March 14, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Won Sig Jung, Hwan Young Choi, Jong Pil Kim, Yeo June Yoon, Kang Hyeon Lee, Tae Young Rhee, Yong Jo Jung
Abstract: The purpose of the present invention is to provide: a crosslinked hyaluronic acid hydrogel in which a crosslinking agent and a polyol are used to reduce toxicity during crosslinking, and thereby enhance safety while increasing persistence in the body; and a filler composition including the crosslinked hyaluronic acid hydrogel.
Abstract: The present disclosure provides a novel compound represented by the following Chemical Formula 1, and an organic light emitting device including the same: wherein A1 to A4, X, Y and n are described herein.
Type:
Application
Filed:
March 8, 2022
Publication date:
March 14, 2024
Applicants:
LG Chem, Ltd., LG Chem, Ltd.
Inventors:
Byeong Yun Lim, Jaechol Lee, Yongwook Kim, Soyoung Yu, Shin Sung Kim, Young Kwang Kim, Hyunju Choi
Abstract: The present disclosure relates to a preparing method of a super absorbent polymer sheet and a super absorbent polymer sheet prepared therefrom. The preparing method of a super absorbent polymer sheet of the present disclosure may prepare a porous flexible super absorbent polymer sheet exhibiting high flexibility and fast absorption rate.
Type:
Application
Filed:
November 20, 2023
Publication date:
March 14, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Kiyoul YOON, Hyeon CHOI, Hyosook JOO, Gicheul KIM, Ju Eun KIM
Abstract: A precursor for a positive electrode active material and a method of making the same are disclosed herein. In some embodiments a method includes forming precursor seeds for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to a reaction solution, and growing precursor particles for a positive electrode active material by a co-precipitation reaction while supplying a transition metal aqueous solution, an ammonium cationic complexing agent, and a basic compound to the reaction solution containing the precursor seeds, wherein the co-precipitation reaction to grow the precursor particles proceeds while continuously increasing feed rates of the transition metal aqueous solution and the ammonium cationic complexing agent.
Type:
Application
Filed:
February 18, 2022
Publication date:
March 14, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Min Joon Lee, Seong Ji Ye, Seung Beom Cho, Jang Soo Lee, Yoon Bin Park
Abstract: A high-nickel positive electrode active material and a method of making the same is disclosed herein. In some embodiments, the material includes a lithium transition metal oxide, wherein the lithium transition metal oxide is secondary particles, wherein each secondary particle is an aggregate of primary particles, and wherein the oxide has an amount of nickel of 80 atm % or more, a first coating layer formed on a surface of the secondary particle and on surfaces of a portion or all of the primary particles, the first coating layer contains nickel and manganese, and has a layered structure, and a second coating layer formed on an outer surface of the first coating layer, the second coating layer contains boron. The active material has improved stability and initial capacity and crack generation at an interface between primary particles is also suppressed.
Type:
Application
Filed:
March 23, 2022
Publication date:
March 14, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Tae Hwan Jun, Hae Jong Jung, Gyun Joong Kim, Myoung Hwan Oh
Abstract: A graft copolymer, and a graft copolymer composition having excellent particulate dispersibility in a curable resin such as an epoxy resin and is applicable as a particulate impact reinforcing agent, a curable resin composition including same, and methods of preparing them.
Type:
Application
Filed:
August 12, 2022
Publication date:
March 14, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Min Ah Jeong, Ki Hyun Yoo, Sang Hoon Han, Yong Kyun Kim
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 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: 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: The present disclosure provides a method for preparing a polymerization initiator composition, including (a) a step of mixing water and a water-soluble initiator to prepare an aqueous initiator solution having a concentration of 1 to 10%; and (b) a step of activating the aqueous initiator solution, wherein the step of activating is performed by (b-1) a step of heat treating the aqueous initiator solution for 0.5 to 4.5 hours at a temperature of 48 to 62° C.; and (b-2) a step of treating the aqueous initiator solution to achieve pH of 1 to 7, where the steps above are performed in no particular order.
Type:
Grant
Filed:
October 7, 2019
Date of Patent:
March 12, 2024
Assignee:
LG CHEM LTD.
Inventors:
Heung Kwon Bae, Kyung Seog Youk, Jung Rae Lee, Hyun Min Lee, Joong Chul Lim, Min Jeong Kang
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: 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: 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: 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: 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: 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 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: 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