Patents Assigned to LG Chem, Ltd.
-
Publication number: 20240148743Abstract: The present invention relates to uses of a compound of chemical formula 1 or a pharmaceutically acceptable salt thereof for the purpose of preventing or treating rare genetic obesity diseases, particularly rare genetic obesity diseases associated with a damaged melanocortin-4 receptor (MC4R) pathway.Type: ApplicationFiled: January 20, 2022Publication date: May 9, 2024Applicant: LG CHEM, LTD.Inventors: Hee Dong PARK, Su Jin YEO, Hye Won AHN
-
Publication number: 20240151697Abstract: A method for analysis of residual lithium compounds in a positive electrode active material for a lithium secondary battery comprises the steps of: analyzing a sample of a positive electrode active material using an oxygen/nitrogen/hydrogen analyzer (ONH analyzer) and a Karl Fischer analyzer to determine the amount of the H component; analyzing the sample using a carbon/sulfur analyzer (CS analyzer) to determine the amount of the C component and the S component; analyzing the sample using an inductively coupled plasma optical emission spectrometer (ICP-OES) to determine the amount of the Li component; and calculating the amount of each of LiOH, Li2CO3, and Li2SO4 in the sample using the quantification results of the H, C, and S components, and calculating the amount of Li2O in the sample using the quantification result of the Li component.Type: ApplicationFiled: November 15, 2022Publication date: May 9, 2024Applicants: LG Chem, Ltd., LG Chem, Ltd.Inventors: Kyeongrak Kim, Dong Wook Lee, Min Hwan Jung, Youkyong Seo
-
Publication number: 20240150504Abstract: The present disclosure relates to a method of preparing a polymer, which includes: adding an alkyl-substituted aromatic vinyl-based monomer and a vinyl cyanide-based monomer to a reactor and initiating polymerization; and performing polymerization while continuously adding an alkyl-substituted aromatic vinyl-based monomer and a multifunctional initiator to the reactor, wherein the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is initiated when a polymerization conversion rate is 10 to 30%, and the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is terminated when a polymerization conversion rate is 70 to 80%.Type: ApplicationFiled: January 17, 2023Publication date: May 9, 2024Applicant: LG CHEM, LTD.Inventors: Sung Won HONG, Hyung Sub LEE, Dae Woo LEE, Woo Ri KIM, Min Cheol JU, Min Seung SHIN, In Soo KIM
-
Publication number: 20240150325Abstract: The present invention relates to a novel compound as protein kinase inhibitors.Type: ApplicationFiled: January 28, 2022Publication date: May 9, 2024Applicant: LG CHEM, LTD.Inventors: Joong Heui CHO, Young Jin HAM, Jung Joon KIM
-
Publication number: 20240150521Abstract: A polycarbonate resin including a unit of Chemical Formula 1, a method for preparing the same, a polycarbonate resin composition including the same, and a molded article including the polycarbonate resin composition are described: wherein all the variables are described herein.Type: ApplicationFiled: February 8, 2023Publication date: May 9, 2024Applicant: LG Chem, Ltd.Inventors: Il Hwan Choi, Kyeongmun Kim, Hye Jin Yim, Jaesoon Bae, Jonghwa Baek, Hyeonah Shin, Min Suk Jung
-
Publication number: 20240150378Abstract: 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 to R8 are described herein.Type: ApplicationFiled: March 31, 2022Publication date: May 9, 2024Applicant: LG Chem, Ltd.Inventors: Young Kwang Kim, Jaechol Lee, Yongwook Kim, Soyoung Yu, Shin Sung Kim, Byeong Yun Lim, Su Hun Jeong
-
Patent number: 11980093Abstract: An organic light emitting device including a compound of Chemical Formula 1 and a compound of Chemical Formula 2, whereinType: GrantFiled: May 17, 2019Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Woochul Lee, Ji Young Choi, Joo Ho Kim, Dong Hoon Lee, Sang Duk Suh, Hoon Jun Kim
-
Patent number: 11975500Abstract: Provided is a method for manufacturing a polarizing plate, comprising a step of irradiating an optical laminate with ultraviolet rays having an emission wavelength band of 380 nm to 410 nm. The optical laminate sequentially comprises a first base film, a first adhesive layer, a linear polarizer, a second adhesive layer, a second base film and a reverse dispersion liquid crystal layer. The first adhesive layer and the second adhesive layer each comprise a photosensitizer for initiating a curing reaction in a wavelength band of 350 nm to 410 nm, and the ultraviolet rays are irradiated on the first base film side of the optical laminate.Type: GrantFiled: February 11, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Young Sik Kim, Jin Yong Park, Yeon Ok Jung, Min Woo Hwang, Jung Geun Kwon, Yong Su Ju, Chan Youn Kim, Ji Hoon Park, Seong Min Lim
-
Patent number: 11975991Abstract: A neutralization/water separation device for an esterified product including: a neutralization tank in which a crude product mixture containing alcohol and an ester compound, a neutralizing agent, and water are put to produce a neutralized mixture; a water separation tank disposed below the neutralization tank to divide the neutralization mixture into a floating layer and an aqueous layer; a partition wall extending downward from a ceiling of the water separation tank to provide a lower passage in the water separation tank; and a transfer line that transfers the neutralized mixture from the neutralization tank to the water separation tank, where the water separation tank includes: a first water separation part into which the neutralized mixture is introduced from the neutralization tank through the transfer line; and a second water separation part into which the neutralized mixture is introduced from the first water separation part through the lower passage, where the first water separation part and the seconType: GrantFiled: July 1, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Yeon Uk Choo, Sung Kyu Lee, Hyun Kyu Kim, Chan Hyu Jin, Hyoung Jun, Jin Sung Park
-
Patent number: 11975308Abstract: The present disclosure relates to a dehydration catalyst, a method for preparing the same, and a method for preparing an alkene using the same. More particularly, the present invention relates to a dehydration catalyst that is mixed-phase alumina including 1 to 18% by weight of alpha-alumina, 65 to 95% by weight of theta-alumina, and 4 to 34% by weight of delta-alumina, a method for preparing the dehydration catalyst, and a method for preparing an alkene using the dehydration catalyst.Type: GrantFiled: November 16, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Hyeon Bin Kim, Joo Young Cheon, Young Sub Keum, Dae Heung Choi
-
Patent number: 11980089Abstract: A compound of Chemical Formula 1, and an organic light emitting device comprising the same.Type: GrantFiled: October 12, 2020Date of Patent: May 7, 2024Assignee: LG CHEM, LTD.Inventors: Su Jin Han, Dong Hoon Lee, Boonjae Jang, Min Woo Jung, Jungha Lee, Seulchan Park
-
Patent number: 11975335Abstract: Disclosed is a hydrogel shredding device. The hydrogel shredding device includes: a first barrel body in which a first transfer space for transferring a hydrogel is formed, and extending in a first direction; a first transfer unit installed in the first barrel body and transferring the hydrogel in the first transfer space; a second barrel body installed on a lateral side of the first barrel body, and in which a second transfer space connected to the first transfer space extends in a second direction traversing the first direction; a second transfer unit installed in the second barrel body and transferring the hydrogel in the second transfer space; a cutter member installed in the second barrel body and pulverizing the hydrogel transferred by the second transfer unit; and a porous plate for discharging the hydrogel particles pulverized by the cutter member to an outside of the second barrel body.Type: GrantFiled: May 12, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventor: Heechang Woo
-
Patent number: 11976224Abstract: A pressure-sensitive adhesive and a liquid crystal cell including the same are disclosed herein. In some embodiments, a pressure-sensitive adhesive having a storage elastic modulus of 700 kPa or more at a temperature of 25° C. and a frequency of 6 rad/sec, and a gel fraction of 35% or more, wherein the gel fraction is defined by Equation 1: B/A×100??[Equation 1] wherein, A is an initial mass (g) of the pressure-sensitive adhesive, B is a mass (g) of an insoluble content after the pressure-sensitive adhesive is immersed in a solvent at 60° C. for 24 hours and then dried at 150° C. for 30 minutes. The press-sensitive adhesive is advantageous for implementation into a flexible element between upper and lower substrates of a liquid crystal cell, and providing excellent electro-optical properties and appearance uniformity by minimizing defects.Type: GrantFiled: July 2, 2021Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Jung Sun You, Dong Hyun Oh, Jin Hong Kim, Jung Woon Kim, Min Jun Gim
-
Patent number: 11975977Abstract: The present application relates to a method for producing a silica film, which includes a step of contacting a silica precursor layer formed of a silica precursor composition having a pH of 5 or less with a Lewis base, where the silica precursor composition includes a silica precursor formed from a silane compound and an acid catalyst. The present application can provide a method capable of forming a silica film having excellent resistance to a vertical load and a tangential load without going through expensive equipment or a high temperature process.Type: GrantFiled: August 24, 2018Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventor: Kwang Seung Park
-
Patent number: 11978576Abstract: A method for preparing a sintered magnet is provided according to one embodiment of the present disclosure. The method includes preparing a mixed powder by coating fluorides on a surface of magnetic powder, adding heavy rare earth hydrides to the mixed powder, and heating the mixed powder, wherein the magnetic powder includes rare earth element-iron-boron-based powder, and the fluorides include at least one of an organic fluoride or an inorganic fluoride.Type: GrantFiled: October 21, 2019Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: In Gyu Kim, Soon Jae Kwon, Ik Jin Choi, Jung Goo Lee, Hyounsoo Uh
-
Patent number: 11976164Abstract: The present disclosure relates to a method of preparing an organic zinc catalyst through solid phase blending that does not require a solvent and a washing process, and a method of preparing a polyalkylene carbonate resin by using the organic zinc catalyst prepared thereby.Type: GrantFiled: December 20, 2019Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Sung Kyoung Kim, Seung Young Park, Sang Cheol Shin, Kyung Min Min
-
Patent number: 11976039Abstract: Method of producing aromatic hydrocarbons including: supplying a raw material stream to a C6 separation column, supplying an upper discharge stream from the C6 separation column to a first gasoline hydrogenation unit, and supplying a lower discharge stream from the C6 separation column to a C7 separation column; supplying an upper discharge stream from the C7 separation column to a hydrodealkylation reaction unit and supplying a lower discharge stream from the C7 separation column to a C8 separation column; separating benzene from discharged streams from the first gasoline hydrogenation unit and the hydrodealkylation reaction unit; removing a lower discharge stream from the C8 separation column and supplying an upper discharge stream from the C8 separation column to a second extractive distillation column; and separating styrene from a lower discharge stream of the second extractive distillation column and separating xylene from an upper discharge stream of the second extractive distillation column.Type: GrantFiled: November 9, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Sung June Hwang, Tae Woo Kim, Sung Kyu Lee
-
Patent number: 11976386Abstract: A method of preparing a carbon fiber including: preparing a precursor fiber for preparing a carbon fiber; and stabilizing the precursor fiber. The stabilization of the precursor fiber includes a first stabilization phase, a second stabilization phase, a third stabilization phase, and a fourth stabilization phase, which are set at four different temperatures between a temperature at which heat starts to be generated from the stabilization reaction of the precursor fiber and a temperature at which the generation of heat is maximized. Ozone gas is input while at least one phase of the third stabilization phase and the fourth stabilization phase is carried out.Type: GrantFiled: April 23, 2019Date of Patent: May 7, 2024Assignee: LG CHEM, LTD.Inventors: Jae Gil Choi, Ji Hye Shin, Joon Hee Cho, Su Jin Kim, Ki Hwan Kim, Il Ha Lee, Myung Su Jang
-
Patent number: 11980090Abstract: A novel compound represented by the following Chemical Formula 1, and an organic light emitting device comprising the same.Type: GrantFiled: November 22, 2019Date of Patent: May 7, 2024Assignee: LG CHEM, LTD.Inventors: Jae Tak Lee, Sung Kil Hong, Jungoh Huh, Dong Uk Heo, Miyeon Han, Junghoon Yang
-
Publication number: 20240145672Abstract: 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 25% to 80% of crystallites C with respect to a total number of crystallites in the outer region. The crystallites C have a high crystallite long-axis orientation degree of 0.5 to 1 and a low crystallite c-axis orientation degree less than 0.5. Thus, the positive electrode active material has high capacity characteristics and a small amount of gas generated.Type: ApplicationFiled: March 22, 2022Publication date: May 2, 2024Applicant: 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