Abstract: There is provided a method and an apparatus for efficiently recovering an amide-based compound such as N-methyl-2-pyrrolidone from an aqueous solution containing an amide-based compound such as N-methyl-2-pyrrolidone.
Abstract: A UV curing adhesive composition, an adhesive film comprising the same, a polarizing film comprising the same, and a display device comprising polarizing film are described herein, wherein the UV curing adhesive composition comprises a monofunctional acrylate, a polyfunctional acrylate, a silane coupling agent, a cationic initiator, and a photosensitizer.
Abstract: A resin composition or a cured body thereof exhibiting low adhesion force to a predetermined adherend while exhibiting high thermal conductivity is provided. Also, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. A product containing the curable composition or the cured body thereof is also provided.
Type:
Application
Filed:
September 28, 2022
Publication date:
April 25, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Jeong Hyun Lee, Yang Gu Kang, Do Yeon Kim
Abstract: The present invention relates to a thermoplastic resin composition including a diene-based graft polymer; a first polymer including a vinyl cyanide-based monomer and an alkyl-substituted styrene-based monomer; a second polymer including a vinyl cyanide-based monomer, an aromatic vinyl-based monomer, and a (meth)acrylate-based monomer; a third polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 80,000 to 220,000 g/mol; a fourth polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 1,500,000 to 5,000,000 g/mol; and a fifth polymer including an olefin-based monomer and having a density of 970 to 1,000 kg/m3 measured in accordance with ASTM D1505, wherein the fifth polymer is included in 0.10 to 3.
Type:
Application
Filed:
September 14, 2022
Publication date:
April 25, 2024
Applicant:
LG CHEM, LTD.
Inventors:
Jun Ho CHOE, Ho NAMGUNG, Seong Lyong KIM, Dae San JUNG
Abstract: Provided are a monomer composition for producing a superabsorbent polymer film, the monomer composition comprising an acrylic acid-based monomer having acidic groups, at least part of which is neutralized, a crosslinking agent, a cellulose-based thickener, a moisturizer, a polymerization initiator, a polyvalent metal salt, and a solvent, and being capable of producing a superabsorbent polymer film showing excellent absorption performances, particularly, an improved initial absorption rate while having a thin thickness, a method of producing a superabsorbent polymer film using the same, and a superabsorbent polymer film produced therefrom.
Type:
Application
Filed:
August 11, 2022
Publication date:
April 25, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Seung Wook Cho, Kiyoul Yoon, Yu Jin Kim, Seongkyun Kang, Kookhyun Choi, Gicheul Kim
Abstract: A curable composition or a thermal interface material exhibiting low adhesion force to a predetermined adherend while having a low density as well as exhibiting a high thermal conductivity is provided. It also has excellent flame retardant properties, and exhibits ejection properties and thixotropy suitable for processes in a state where halogen flame retardants or phosphorus-based flame retardants are not used, or the use ratio thereof is minimized.
Type:
Application
Filed:
September 20, 2022
Publication date:
April 25, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Do Yeon Kim, Ho Yeon Son, Yang Gu Kang, Shin Hee Jun, Ha Na Lee, Jeong Hyun Lee
Abstract: A composition which can be cured at room temperature; and can form a heat dissipation material exhibiting an appropriate level of hardness, low adhesion force, and excellent thermal conductivity, is provided. In addition, the composition can achieve the low adhesion force, and the like without using a plasticizer or the like, or in a state where even if the plasticizer is used, the use ratio thereof is minimized. A product containing the composition, or a cured body thereof is also provided.
Type:
Application
Filed:
September 28, 2022
Publication date:
April 25, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Do Yeon Kim, Young Jo Yang, Jeong Hyun Lee, Yang Gu Kang
Abstract: A method of preparing a carboxylic acid-modified nitrile-based copolymer latex is provided. The method of preparing a carboxylic acid-modified nitrile-based copolymer later includes emulsion-polymerizing a monomer mixture including a conjugated diene-based monomer, an ethylenically unsaturated nitrile-based monomer, and an ethylenically unsaturated acid monomer in the presence of a cross-linking agent including glyoxal.
Type:
Grant
Filed:
August 12, 2020
Date of Patent:
April 23, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Jung Eun Kim, Ji Hyun Kim, Won Sang Kwon, Myung Su Jang, Seung Whan Oh
Abstract: The present specification relates to a hetero-cyclic compound represented by the following Chemical Formula 1, and an organic light emitting device including the same. Such hetero-cyclic compound used as a material for an organic material layer of an organic light emitting device improves efficiency, achieves low driving voltage, and/or improves service life characteristics. [Chemical Formula 1] wherein R1 to R5, r3 to r5, L1, and Ar1 are defined therein.
Abstract: Provided is a method for preparing an oligomer including: supplying a monomer stream and a solvent stream to a reactor to perform an oligomerization reaction to prepare a reaction product; supplying a discharge stream from the reactor including the reaction product to a separation device and supplying a lower discharge stream from the separation device to a settling tank; adding an organic flocculant to the settling tank to settle and remove a polymer and supplying the lower discharge stream from the separation device from which the polymer is removed to a high boiling point separation column; and removing a high boiling point material from the lower portion in the high boiling point separation column and supplying an upper discharge stream including an oligomer to a solvent separation column.
Type:
Grant
Filed:
January 10, 2022
Date of Patent:
April 23, 2024
Assignee:
LG Chem, Ltd.
Inventors:
Kyung Seog Youk, Jong Hun Song, Min Ho Sun, Hong Min Lee, Hyun Seok Kim, Moon Sub Hwang, Jeong Seok Lee
Abstract: An imprinting photomask including: a transparent substrate; a light blocking pattern provided on the transparent substrate; and a dry film resist (DFR) pattern provided on the light blocking pattern.
Type:
Grant
Filed:
April 2, 2019
Date of Patent:
April 23, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Yong Goo Son, Seung Heon Lee, Nam Seok Bae
Abstract: Provided is an organic light emitting device comprising: an anode; a cathode; a light emitting layer provided between the anode and the cathode; and an organic material layer provided between the cathode and the light emitting layer, wherein the light emitting layer comprises a compound of Chemical Formula 1, and the organic material layer provided between the cathode and the light emitting layer contains a compound of Chemical Formula 2.
Type:
Grant
Filed:
September 20, 2019
Date of Patent:
April 23, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Jungoh Huh, Sung Kil Hong, Miyeon Han, Jae Tak Lee
Abstract: The present invention relates to a method for preparing carbon nanotubes, the method including: preparing a support including AlO(OH) by primary heat treatment of Al(OH)3; preparing an active carrier by supporting a mixture including a main catalyst precursor and a cocatalyst precursor on the support; drying the active carrier through multi-stage drying including vacuum drying; preparing a supported catalyst by secondary heat treatment of the dried active support; and preparing carbon nanotubes in the presence of the supported catalyst, and the carbon nanotubes prepared by the method as described above can remarkably improve conductivity.
Type:
Grant
Filed:
July 22, 2019
Date of Patent:
April 23, 2024
Assignee:
LG CHEM, LTD.
Inventors:
Kyung Yeon Kang, Hyun Joon Kang, Ki Soo Lee
Abstract: A resin composition or a cured body thereof that exhibits low adhesion force to a predetermined adherend while exhibiting high thermal conductivity is provided. Also, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. A product comprising the curable composition or the cured body thereof is also provided.
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 from the precursor seeds 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 feed rates for the transition metal aqueous solution and the ammonium cationic complexing agent to grow the precursor particles are two or more times greater than feed rates for the transition metal aqueous solution and the ammonium cationic complexing agent to grow the precursor seeds.
Type:
Application
Filed:
February 15, 2022
Publication date:
April 18, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Seong Ji Ye, Min Joon Lee, Yoon Bin Park
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 R1, R2, and n1 are described herein.
Type:
Application
Filed:
December 3, 2021
Publication date:
April 18, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Byeong Yun Lim, Jaechol Lee, Yongwook Kim, Soyoung Yu, Shin Sung Kim, Young Kwang Kim, Hyungil Park
Abstract: In the present disclosure, there are provided a vinyl alcohol-based copolymer including a first repeating unit derived from an olefin, a second repeating unit containing a hydroxyl group, and a third repeating unit containing a cyanoalkyloxy group formed by a reaction of the repeating unit containing a hydroxyl group and an unsaturated nitrile-based compound, wherein the third repeating unit is included in an amount of 2 mol % or more and less than 10 mol % with respect to 100 mol % of a total amount of the second repeating unit and the third repeating unit; a method for preparing the same; and a gas barrier film including the same. The vinyl alcohol-based copolymer has excellent moisture stability, thereby exhibiting excellent gas barrier properties even in a humid environment.
Abstract: Disclosed is a transition metal compound that exhibits high activity and high comonomer incorporation in olefin polymerization and can be used for preparing a polyolefin having a BOCD structure, a method for preparing the same, and a catalyst composition including the same.
Type:
Application
Filed:
July 6, 2021
Publication date:
April 18, 2024
Applicant:
LG CHEM, LTD.
Inventors:
Byung Seok KIM, Minyoung KANG, Insun LEE, Seok Hwan KIM, Donghyeon GWON, Yoonchul JUNG, Seyoung KIM
Abstract: A method for replicating a holographic optical element and a holographic optical element replicated thereby are provided. The holographic optical element is larger than a master. The master has a holographic grating pattern generated on the master by interference of the reflected, diffracted or transmitted beam generated by irradiating the master having a specific diffraction grating pattern formed thereon with a laser beam.
Type:
Application
Filed:
August 25, 2021
Publication date:
April 18, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Bo Ra Jung, Joon Young Lee, Min Soo Song, Do Kyeong Kwon, Yeon Jae Yoo
Abstract: An encapsulant composition for an optical device; comprises an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance. An encapsulant film for an optical device using the same is also provided.
Type:
Application
Filed:
November 10, 2022
Publication date:
April 18, 2024
Applicant:
LG Chem, Ltd.
Inventors:
Jin Kuk Lee, Eun Jung Lee, Sang Eun Park, Sang Hyun Hong, Young Woo Lee, Jung Ho Jun