Patents by Inventor Ki-Soo Lee

Ki-Soo Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR OLEFIN OLIGOMERIZATION
    Publication number: 20180009727
    Abstract: The present invention relates to a method for olefin oligomerization and comprising i) injecting an olefin monomer and a solvent into a continuous stirred tank reactor (CSTR); ii) injecting an oligomerization catalyst system comprising a ligand compound, a transition metal compound, and a co-catalyst into the continuous stirred tank reactor; and iii) performing a multimerization reaction of the olefin monomer, wherein a ratio of the flowing rates of the olefin monomer and the solvent is from 1:1 to 2:1. In the method for olefin oligomerization according to the present invention, high linear alpha-olefin selectivity may be attained even with a small amount of a solvent used by controlling reaction conditions during the multimerization reaction of olefin by a continuous reaction using a continuous stirred tank reactor.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 11, 2018
    Inventors: Yoon Ki HONG, Yong Ho LEE, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seok Pil SA, Seul Ki IM
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLIGOMERIZATION, AND METHOD FOR OLEFIN OLIGOMERIZATION USING THE SAME (As Amended)
    Publication number: 20170369515
    Abstract: The present disclosure relates to a ligand compound, a catalyst system for oligomerization, and a method for olefin oligomerization using the same. The catalyst system for oligomerization using the ligand compound according to the present disclosure has excellent catalytic activity, exhibits high selectivity to 1-hexene and 1-octene, and greatly reduces the production of the by-products, thereby enabling efficient preparation of alpha-olefin.
    Type: Application
    Filed: January 26, 2016
    Publication date: December 28, 2017
    Inventors: Eun Ji SHIN, Yong Ho LEE, Jin Young PARK, Seok Pil SA, Ki Soo LEE, Seul Ki IM
  • Ligand compound, metallocene compound, and method for preparation of olefin-based polymer using the same
    Patent number: 9850326
    Abstract: The present invention relates to a novel ligand compound, a metallocene compound, and a method for preparing an olefin-based polymer using the same. The metallocene compound according to the present invention and a catalyst composition comprising the same have excellent polymerization activity, and yet, have excellent comonomer insertion capability, and thus, can be used to prepare olefin-based polymer having wide molecular weight distribution and the resulting excellent processability.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: December 26, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Bog Ki Hong, Yong Ho Lee, Chang Woan Han, Yi Young Choi, Ki Soo Lee
  • Ligand compound, catalyst system for olefin oligomerization, and olefin oligomerization method using the same
    Patent number: 9827561
    Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The present ligand compound is a compound having a certain new structure and enables provision of a catalyst system for olefin oligomerization that can oligomerize ethylene with higher catalytic activity.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seok Pil Sa, Yong Ho Lee, Ki Soo Lee, Eun Ji Shin
  • Metallocene compounds, catalyst compositions comprising the same, and method for preparing olefin polymers using the same
    Patent number: 9828403
    Abstract: The present invention relates to a transition metal compound that may exhibit high activity in olefin polymerization, and easily control the properties of synthesized olefin polymer such as a chemical structure, molecular weight distribution, a mechanical property, and the like, a catalyst composition comprising the same, and a method for olefin polymerization using the catalyst composition.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Min Lee, Ki Soo Lee, Heon Yong Kwon, Dae Sik Hong, Se Young Kim, Yong Ho Lee, Eun Young Shin, Sung Ho Park, Min Seok Cho, Kyung Jin Cho, Jin Young Park
  • OLEFIN-BASED POLYMER HAVING EXCELLENT MELT STRENGTH AND FILM INCLUDING THE SAME
    Publication number: 20170320978
    Abstract: Provided are an olefin-based polymer having excellent melt strength and a film including the same. The olefin-based polymer according to the present invention may have excellent processability, haze and mechanical properties, and in particular, high melt strength, thereby being usefully applied to films, etc.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 9, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Dong Hoon JEONG, Heon Yong KWON, Yu Taek SUNG, Ki Soo LEE, Dae Sik HONG, Eun Young SHIN, Soon Ho SUN
  • LIGAND COMPOUND, ORGANIC CHROMIUM COMPOUND, CATALYST SYSTEM FOR OLIGOMERIZATION OF OLEFINS, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20170312738
    Abstract: The present invention relates to a ligand compound, a catalyst system for oligomerization of olefins including the ligand compound and the organic chromium compound, and a method for oligomerizing olefins using the same. The catalyst system for olefin oligomerization according to the present invention invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thereby enabling more efficient production of alpha-olefins.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 2, 2017
    Inventors: Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Seok Pil SA, Ki Soo LEE
  • DEACTIVATOR AND METHOD FOR DECREASING BY-PRODUCTS IN OLEFIN OLIGOMERIZATION USING THE SAME
    Publication number: 20170305811
    Abstract: The method for oligomerizing olefin according to the present disclosure is a method for oligomerizing olefin using an oligomerization catalyst system and includes deteriorating the activity of the oligomerization catalyst system by injecting a deactivator in a latter part of a multimerization reaction of olefin. The deactivator may include an additive for polymer containing at least one functional group selected from the group consisting of a hydroxyl group, an amine group and an amide group. According to the oligomerizing method, the isomer of 1-hexene and/or 1-octene and alpha-olefins with C10 to C40 may be decreased via the restraint of the additional side reaction of a product. Since the deactivator is an additive for enhancing the physical properties of a polymer, a separating process thereof is not required, thereby improving economic feasibility and productivity.
    Type: Application
    Filed: February 2, 2016
    Publication date: October 26, 2017
    Inventors: Eun Ji SHIN, Yong Ho LEE, Seul Ki IM, Ki Soo LEE, Jin Young PARK, Seok Pil SA
  • METHOD FOR PREPARING POLYOLEFIN POLYMER FOR FIBER PRODUCTION
    Publication number: 20170291969
    Abstract: The present invention relates to a polyolefin which exhibits a narrow molecular weight distribution, high strength, and a high stretching ratio, and a preparation method therefor. According to the present invention, it is possible to provide polyethylene with high catalyst activity, high molecular weight, and controlled molecular weight distribution by using, in polymerization of an olefin monomer, a hybrid supported metallocene catalyst in which a borate compound is used as a second cocatalyst. In addition, if the polyolefin is processed, it is possible to produce a fiber with excellent mechanical properties and an excellent stretching ratio.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 12, 2017
    Inventors: Seung Mi LEE, Yi Young CHOI, Dae Sik HONG, Eun Kyoung SONG, Heon Yong KWON, Young Suk YOU, Ki Soo LEE, Ki Heon SONG
  • METALLOCENE COMPOUND, METALLOCENE-SUPPORTED CATALYST, AND METHOD OF PREPARING POLYOLEFIN USING THE SAME
    Publication number: 20170283522
    Abstract: Provided are a novel metallocene compound, a metallocene-supported catalyst, and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure exhibits a high polymerization activity even when the metallocene compound is supported on a support, thereby showing an excellent activity and preparing a polyolefin having a high molecular weight.
    Type: Application
    Filed: December 15, 2015
    Publication date: October 5, 2017
    Inventors: Sung Min LEE, Bog Ki HONG, Kyung Kin CHO, Se Young KIM, Chang Woan HAN, Ki Soo LEE, Eun Kyoung SONG
  • METHOD FOR OLIGOMERIZING OLEFIN (AS AMENDED)
    Publication number: 20170267603
    Abstract: The present specification relates to an olefin oligomerization method and specifically to an olefin oligomerization method comprising the step of subjecting an olefin to a multimerization reaction by controlling a reaction temperature such that the weight ratio of 1-hexene to 1-octene within a product comprising 1-hexene and 1-octene has a predetermined value, in the presence of an oligomerization catalyst system comprising a ligand compound, a transition metal compound, and a cocatalyst, wherein the predetermined value for the weight ratio of 1-hexene to 1-octene within the product is selected in a range of 1:0.5 to 1:7. By the method, 1-hexene and 1-octene can be produced in a desired ratio.
    Type: Application
    Filed: February 2, 2016
    Publication date: September 21, 2017
    Inventors: Seul Ki IM, Yong Ho LEE, Eun Ji SHIN, Jin Young PARK, Seok Pil SA, Ki Soo LEE
  • POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    Publication number: 20170263925
    Abstract: A positive active material for a rechargeable lithium battery includes a first oxide particle having a layered structure and a second oxide layer located in a surface of the first oxide particle and including a second oxide represented by the following Chemical Formula 1: MaLbOc, wherein in Chemical Formula 1, 0<a?3, 1?b?2, 3.8?c?4.2, M is at least one element selected from the group of Mg, Al, Ga, and combinations thereof, and L is at least one element selected from of group Ti, Zr, and combinations thereof.
    Type: Application
    Filed: January 23, 2017
    Publication date: September 14, 2017
    Inventors: Jae-Hyun SHIM, Ki-Soo LEE, Se-Hee LEE, Hyeon-Ah JU
  • LIGAND COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFINS USING THE SAME
    Publication number: 20170260305
    Abstract: The present invention relates to a compound represented by the chemical formula 1, a catalyst system for olefin oligomerization comprising the same, and a method for oligomerizign olefins using the same, and the catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity as well as high selectivity for 1-hexene or 1-octene, thereby enabling more efficient preparation of alpha-olefins.
    Type: Application
    Filed: September 1, 2016
    Publication date: September 14, 2017
    Inventors: Yong Ho LEE, Seul Ki IM, Eun Ji SHIN, Ki Soo LEE, Jin Young PARK, Seok Pil SA, Yoon Ki HONG
  • ETHYLENE/ALPHA-OLEFIN COPOLYMER HAVING EXCELLENT PROCESSABILITY
    Publication number: 20170233511
    Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent processability. The ethylene/alpha-olefin copolymer according to the present invention has excellent processability and is therefore suitable for producing products by an injection molding method.
    Type: Application
    Filed: April 15, 2016
    Publication date: August 17, 2017
    Inventors: Soon Ho SUN, Yi Young CHOI, Ki Soo LEE, Eun Kyoung SONG, Yu Taek SUNG, Ye Jin LEE, Chang Woan HAN, Sol CHO
  • Ligand compound, organic chromium compound, catalyst system for ethylene oligomerization, preparation method thereof, and ethylene oligomerization method using the same
    Patent number: 9731282
    Abstract: The present invention relates to a ligand compound, an organic chromium compound, a catalyst system for ethylene oligomerization, a preparation method thereof, and an ethylene oligomerization method using the same. The catalyst system for ethylene oligomerization according to the present invention is used to prepare a low-density polyethylene in one reactor by using a small amount of comonomers such as alpha-olefin or by using only ethylene without comonomers, because it maintains high catalytic activity and high alpha-olefin selectivity even though supported on a support.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: August 15, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Min-Seok Cho, Yong-Ho Lee, Seok-Pil Sa, Heon-Yong Kwon, Kyung-Jin Cho, Se-Young Kim, Sung-Min Lee, Ki-Soo Lee, Kyoung-Chan Lim
  • Ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility and environmetal stress crack resistance
    Patent number: 9732172
    Abstract: The present invention relates to an ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility. The ethylene/1-hexene or ethylene/1-butene copolymer according to the present invention has high molecular weight and wide molecular weight distribution, and thus excellent processibility, and has excellent environmental stress crack resistance, and thus, may be applied for a high inner pressure heating pipe, a mining pipe, or a large-diameter pipe, and the like.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Joong Soo Kim, Hyuck Ju Kwon, Yi Young Choi, Ki Soo Lee, Eun Kyoung Song, Nak-Kyu Song, Dae Sik Hong, Woo Ri Kim, Si Yong Kim
  • Olefin-based polymer with excellent processability
    Patent number: 9732171
    Abstract: Provided is an olefin-based polymer with excellent processability. The olefin-based polymer according to the present invention has a high molecular weight and a broad molecular weight distribution to show excellent processability and improved transparency, thereby being used in desired applications.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yu Taek Sung, Heon Yong Kwon, Ki Soo Lee, Dae Sik Hong, Dong Hoon Jeong, Eun Young Shin
  • Metallocene compound, a catalyst composition comprising the same, and a method of preparing an olefinic polymer by using the same
    Patent number: 9725472
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition including the same, and a method of preparing an olefinic polymer by using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used for producing olefinic polymers, have outstanding polymerizing ability, and can produce olefinic polymers of ultra high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefinic polymer of ultra high molecular weight can be obtained because it shows high polymerization activity even when it is supported on a carrier and maintains high activity even in the presence of hydrogen because of its low hydrogen reactivity.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: August 8, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Eun Kyoung Song, Kyung Jin Cho, Ki Soo Lee, Se Young Kim, Sung Min Lee, Hyuck Ju Kwon, Yi Young Choi, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong
  • Metallocene compound, a catalyst composition comprising the same, and a method of preparing an olefinic polymer by using the same
    Patent number: 9725533
    Abstract: The present invention relates to a novel metallocene compound, a catalyst composition including the same, and a method of preparing an olefinic polymer by using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used for producing olefinic polymers, have outstanding polymerizing ability, and can produce olefinic polymers of ultra high molecular weight. In particular, when the metallocene compound according to the present invention is employed, an olefinic polymer of ultra high molecular weight can be obtained because it shows high polymerization activity even when it is supported on a carrier and maintains high activity even in the presence of hydrogen because of its low hydrogen reactivity.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: August 8, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yong Ho Lee, Eun Kyoung Song, Kyung Jin Cho, Ki Soo Lee, Se Young Kim, Sung Min Lee, Hyuck Ju Kwon, Yi Young Choi, Heon Yong Kwon, Min Seok Cho, Dae Sik Hong
  • TRANSITION METAL COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND METHOD OF PREPARING POLYOLEFIN
    Publication number: 20170198074
    Abstract: The present invention relates to a novel transition metal compound, a catalyst composition comprising the transition metal compound, and a method of preparing polyolefin using the catalyst composition.
    Type: Application
    Filed: June 5, 2015
    Publication date: July 13, 2017
    Inventors: Bog Ki HONG, Yong Ho LEE, Chang Woan HAN, Yi Young CHOI, Ki Soo LEE