Patents Assigned to LG Chem, Ltd.
  • Publication number: 20220193634
    Abstract: The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, and significantly reducing the amount of fine powder generated during the process.
    Type: Application
    Filed: December 18, 2020
    Publication date: June 23, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Yoon Jae MIN, Gicheul KIM, Ki Hyun KIM, Sung Soo PARK, Jinuk CHOI, Tae Yun KIM, Heechang WOO
  • Publication number: 20220199981
    Abstract: A positive electrode material for a secondary battery and a method of making the same is disclosed herein. In some embodiments, a positive electrode active material includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes 60 mol % or more of the nickel (Ni) among metals excluding lithium, and a coating layer is formed on surfaces of particles of the lithium composite transition metal oxide, wherein the coating layer includes a lithium-polymer compound which is formed by a reaction of a lithium by-product with a polymer.
    Type: Application
    Filed: April 10, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Dong Joon Ahn, Jung Ho Lim, Yeo June Yoon
  • Publication number: 20220195079
    Abstract: The present invention relates to a catalyst composition including an oxonium ion-based catalyst represented by the following Formula 1, and an additive, and a method for preparing polyisobutene using the same: wherein R, R1 to R4, and o, p, q and r are described herein.
    Type: Application
    Filed: December 4, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hyun Jo, Seong Beom Heo, Won Hee Kim, Jin Lee, Gyeong Shin Choi, Hee Jeong Kim
  • Publication number: 20220195118
    Abstract: The present disclosure proposes an improved heat resistant base for electronic equipment having transparency, heat resistance and mechanical strength and also having superior optical properties and quality, and thereby capable of replacing a transparent glass base. The present disclosure is accomplished by the heat resistant base for electronic equipment including a polyimide-based resin and a hollow particle, wherein a plurality of the hollow particles are dispersed and present in the polyimide-based resin, and the hollow particle has an average particle diameter of greater than or equal to 10 nm and less than or equal to 300 nm.
    Type: Application
    Filed: March 30, 2020
    Publication date: June 23, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Youngsun PARK, Shinji SHIRAKI
  • Publication number: 20220195101
    Abstract: A polyolefin-polystyrene multi-block copolymer and method of making the same is disclosed herein. In some embodiments, a polyolefin-polystyrene multi-block copolymer having a ratio of a loss modulus (E?) to a storage modulus (E?) satisfying the following conditions (a) and (b) over a temperature range of ?80° C. to 40° C., wherein the ratio is represented by a loss tangent (tan ?) value and is obtained by dynamic mechanical analysis (DMA), (a) a maximum of the tan ? value in a peak present in the temperature range is 0.20 to 0.35, and (b) a half-width of the peak ranges from 32.0° C. to 50.0° C. The polyolefin-polystyrene multi-block copolymer has a structure in which polystyrene chains are attached to both ends of a polyolefin chain.
    Type: Application
    Filed: May 15, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hyun Park, Dae Woong Lee, Sung Hyun Park, Seok Pil Sa, Seul Ki Im, Hyun Mo Lee, Yun Kon Kim, Ki Soo Lee, Myung Han Lee, Eun Ji Shin
  • Publication number: 20220195151
    Abstract: The present technology provides a carboxylic acid-modified nitrile-based copolymer latex including a carboxylic acid-modified nitrile-based copolymer including a conjugated diene-based monomer-derived unit, an ethylenic unsaturated nitrile-based monomer-derived unit, and an ethylenic unsaturated acid monomer-derived unit, wherein the carboxylic acid-modified nitrile-based copolymer latex satisfies General Formula 1 and General Formula 2.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jung Su Han, Won Sang Kwon, Jung Eun Kim, Seung Uk Yeu, Do Young Ha
  • Publication number: 20220195074
    Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. The modified conjugated diene-based polymer has excellent storage stability and excellent processability, tensile strength and viscoelasticity properties. In some embodiments, a modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer, and a functional group derived from an aminoalkoxysilane-based modifier, wherein the rate of change of molecular weight distribution calculated by Mathematical Formula 1 is 10% or less.
    Type: Application
    Filed: September 11, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Hyoung Woo Lee, Ro Mi Lee, Yu Jin Kim
  • Publication number: 20220195075
    Abstract: A continuous preparation system of a conjugated diene-based polymer having improved rolling resistance properties is provided. By utilizing the continuous preparation system, a polymerization conversion ratio at an initial stage of polymerization is easy to control, long time operation is possible and productivity is excellent.
    Type: Application
    Filed: December 24, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Su Hwa Kim, No Ma Kim, Jun Seok Ko
  • Patent number: 11365126
    Abstract: Provided is a method for manufacturing an aerogel blanket having improved processability by reducing manufacturing time and cost, the method including the steps of mixing a precursor material, an acid catalyst and a hydrous alcohol to prepare a sol, depositing a substrate in the sol, and reacting with a gaseous silazane-based compound to form a gel and to perform aging and surface modification reaction simultaneously to form a wet gel blanket, and drying the wet gel blanket to manufacture an aerogel blanket.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Myung Eun Oh, Se Won Baek, Kyu Reon Lee
  • Patent number: 11365125
    Abstract: Provided is a supercritical drying method for a silica wet gel blanket, and a method for producing a silica aerogel blanket including the same, the supercritical drying method being capable of improving drying efficiency. The supercritical drying method improves the efficiency of a supercritical drying step by reducing carbon dioxide usage without additional equipment investment and energy input, thereby drying a silica wet gel blanket in a more economical manner.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Kyoung Shil Oh, Se Won Baek, Mi Ri Kim
  • Patent number: 11367836
    Abstract: Provided is a heterocyclic compound of Chemical Formula 1: and an organic light emitting device including the same.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Dong Uk Heo, Dong Hoon Lee, Jungoh Huh, Boonjae Jang, Miyeon Han, Junghoon Yang, Heekyung Yun
  • Patent number: 11366259
    Abstract: The present application relates to an optical film, an optical element and an imaging device. The optical film of the present application does not only exhibit broadband polarization conversion characteristics in the visible light region, but also has absorption bands in the visible light region. Such an optical film can be applied to an imaging device such as an augmented reality apparatus as an optical element such as a diffractive light guide plate laminate to suppress crosstalk.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Dong Ho Ko, Kyung Ki Hong, Young Min Lee, Doo Young Huh, So Ra Yoon, Sun Kug Kim, Ji Won Kim
  • Patent number: 11366045
    Abstract: The present disclosure relates to an apparatus and a method for analysis of a multi-layer adhesive film and provides the apparatus comprising a specimen tray unit; a blade unit; a liquid nitrogen supply unit; and a driving unit, and the method comprising a specimen fixing step; a specimen cooling step; a specimen pre-collection step; a specimen collection step; and a blade separation step.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: So Yeon Kim, Rin Jang, Joon Seok Lee, Byoung Hyoun Kim, Bumgyu Choi, Su Youn Han
  • Patent number: 11367838
    Abstract: Provided are anthracene derivatives of Chemical Formula 1: wherein: X1 is O or S; R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, a nitrile group, a halogen groups a substituted or unsubstituted alkyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, or bond to adjacent groups to form a substituted or unsubstituted ring; Ar is a substituted or unsubstituted heteroaryl group comprising O or S; and a is an integer of 0 to 9, and b is an integer of 0 to 8, and when a is 2 or greater, R1s are the same as or different from each other, and when b is 2 or greater, R2s are the same as or different from each other. Also provided are organic light emitting devices comprising same.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 21, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Younghee Lee, Dongheon Kim, Woochul Lee, Ji Young Choi, Wanpyo Hong, Young Seok Kim, Joo Ho Kim, Kongkyeom Kim
  • Publication number: 20220186092
    Abstract: The present invention provides an adhesive composition for a dicing tape, which may prevent the success rate of chip pick-up from decreasing due to an oxygen inhibition phenomenon occurring in a dicing process, and a dicing tape including the same. The adhesive composition for a dicing tape includes an adhesive binder, a singlet oxygen scavenger, a photosensitizer, and a photoinitiator.
    Type: Application
    Filed: August 13, 2020
    Publication date: June 16, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Da Ae KIM, Ji Ho HAN, Kwang Joo LEE, Eun Yeong KIM, Mi JANG
  • Publication number: 20220185916
    Abstract: The present disclosure relates to a novel transition metal compound represented by the following Chemical Formula 1, which exhibits excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a high melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same, wherein M, X1, X2, and R1 to R8 are described herein.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 16, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Byung Seok Kim, Insun Lee, Seok Hwan Kim, Jung Won Lee, Donghyeon Gwon, Sangjin Jeon, Seyoung Kim, Heekwang Park
  • Publication number: 20220185691
    Abstract: The present invention provides a positive electrode active material for a secondary battery, which includes a lithium transition metal oxide including nickel (Ni) and cobalt (Co), and at least one selected from the group consisting of aluminum (Al), manganese (Mn), and a combination thereof. The lithium transition metal oxide is characterized in that the content of nickel (Ni) in the total transition metal elements is 80 mol % or more, and the cation mixing ratio of Ni cations in a lithium layer in the lithium transition metal oxide structure is 1.1% or less.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 16, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hye Kim, Byung Chun Park, So Ra Baek, Tae Gu Yoo, Wang Mo Jung
  • Publication number: 20220186108
    Abstract: The present specification relates to a color conversion film comprising a color conversion functional layer including a phase change material, and a backlight unit and a display apparatus including the color conversion film.
    Type: Application
    Filed: November 11, 2019
    Publication date: June 16, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Sung Yong MIN, Dong Mok SHIN, Nari KIM, Ji Ho KIM, Hye Mi OH
  • Publication number: 20220185920
    Abstract: The present invention relates to a polypropylene-based composite material having improved physical properties including impact strength at low temperature and at room temperature, flexural strength, flexural modulus, etc., and a method for preparing the same.
    Type: Application
    Filed: August 27, 2020
    Publication date: June 16, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Sang Eun Park, In Sung Park, Eun Jung Lee, Hyun Jin Ju, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Publication number: 20220185999
    Abstract: The present technology relates to a latex composition for dip molding comprising a carboxylic acid-modified nitrile-based copolymer latex satisfying General Formulas 1 and 2, wherein the carboxylic acid-modified nitrile-based copolymer includes a conjugated diene-based monomer-derived unit, an ethylenic unsaturated nitrile-based monomer-derived unit, and an ethylenic unsaturated acid monomer-derived unit, and a molded article.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 16, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Seung Whan Oh, Won Sang Kwon, Jung Eun Kim, Ji Hyun Kim, Seung Uk Yeu, Myung Su Jang, Do Young Ha, Jung Su Han