Patents by Inventor Seung-Hwan Jung

Seung-Hwan Jung 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).

  • Patent number: 11059917
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density. In addition, an olefin polymer which is polymerized using the catalyst composition including the transition metal compound may be used for the manufacture of a product having low melt index (MI) and high molecular weight.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: July 13, 2021
    Inventors: Dong Eun Kim, Yun Jin Lee, Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Choong Hoon Lee
  • Publication number: 20210163643
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, and minimized number of unsaturated functional groups, and in which a comonomer is uniformly present to show excellent physical properties, and a method for preparing the same.
    Type: Application
    Filed: May 3, 2019
    Publication date: June 3, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jin Sam Gong, Seung Hwan Jung, Jung Ho Jun, Rae Keun Gwak, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
  • Publication number: 20210155727
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, having minimized number of unsaturated functional groups, and having uniform crystallinity, thereby showing excellent physical properties, and a method for preparing the same.
    Type: Application
    Filed: May 3, 2019
    Publication date: May 27, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Rae Keun Gwak, Seung Hwan Jung, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
  • Publication number: 20210032274
    Abstract: A transition metal compound represented by Chemical Formula I and a method for preparing the same, catalyst compositions including the same, and olefin-based polymers prepared from the same are disclosed herein. The transition metal catalyst has excellent structural stability together with excellent catalytic activity and can exhibit excellent copolymerizability even at a high temperature. In an embodiment, an olefin-based polymer prepared using a catalyst composition including the transition metal compound has a density of 0.91 g/cc or less.
    Type: Application
    Filed: July 27, 2018
    Publication date: February 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Young Shil Do, Jin Sam Gong, Eun Jung Lee, Choong Hoon Lee, Seung Hwan Jung, Yoon Hee Cho, Hyo Jung Han
  • Publication number: 20210024729
    Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups to show excellent physical properties, and a method for preparing the same.
    Type: Application
    Filed: May 3, 2019
    Publication date: January 28, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jung Ho JUN, Seung Hwan JUNG, Jin Sam GONG, Rae Keun GWAK, Choong Hoon LEE, Eun Jung LEE, Hyun Jin JU, In Sung PARK, Sang Eun PARK
  • Patent number: 10800863
    Abstract: The present invention relates to a transition metal complex that exhibits high activity in the polymerization reaction of olefin monomers and improved copolymerization activity, thus enabling the preparation of a low density, high molecular weight polyolefin, a catalyst composition including the same, and a method for preparing a polyolefin using the composition.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 13, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dong Eun Kim, A Rim Kim, Jin Sam Gong, Choong Hoon Lee, Seung Hwan Jung
  • Publication number: 20200207792
    Abstract: The present invention provides a novel ligand compound, a transition metal compound and a catalyst composition including the same.
    Type: Application
    Filed: January 11, 2019
    Publication date: July 2, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Ki Won Han, A Rim Kim, Seung Hwan Jung
  • Patent number: 10590215
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: March 17, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Yoon Hee Cho, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Seung Hwan Jung
  • Patent number: 10550204
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a low density olefin-based polymer, and a catalyst composition including the same.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: February 4, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Yoon Hee Cho, Jung Ho Jun, Jin Sam Gong, Choong Hoon Lee, Seung Hwan Jung
  • Patent number: 10508165
    Abstract: The present invention provides an olefin-based polymer which satisfies the following conditions of (1) to (4) and is capable of exhibiting improved impact strength without degrading mechanical properties such as tensile strength: (1) density (d): from 0.850 to 0.910 g/cc, (2) melting index (MI, 190° C., 2.16 kg load conditions): from 0.1 to 100 g/10 min, (3) molecular weight distribution (MWD): from 1.5 to 3.0, and (4) two peaks are shown in a temperature range of ?20° C. to 120° C. when taking measurements of temperature rising elution fractionation (TREF), and a relation of T(90)?T(50)?60° C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 17, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sang Eun Park, Hae Woong Park, Choong Hoon Lee, Seung Hwan Jung, Ji Yoon Woo, Hyo Ju Kim, Young Woo Lee
  • Publication number: 20190241688
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Yoon Hee CHO, Jin Sam GONG, Jung Ho JUN, Choong Hoon LEE, Seung Hwan JUNG
  • Publication number: 20190233553
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density. In addition, an olefin polymer which is polymerized using the catalyst composition including the transition metal compound may be used for the manufacture of a product having low melt index (MI) and high molecular weight.
    Type: Application
    Filed: November 9, 2017
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Dong Eun Kim, Yun Jin Lee, Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Choong Hoon Lee
  • Patent number: 10336842
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 2, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yoon Hee Cho, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Seung Hwan Jung
  • Patent number: 10280236
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having a low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: May 7, 2019
    Assignee: LG CHEM, LTD.
    Inventors: A Rim Kim, Dong Eun Kim, Jin Sam Gong, Seung Hwan Jung, Hae Woong Park
  • Publication number: 20190106513
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a low density olefin-based polymer, and a catalyst composition including the same.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 11, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Yoon Hee CHO, Jung Ho JUN, Jin Sam GONG, Choong Hoon LEE, Seung Hwan JUNG
  • Patent number: 10189916
    Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a low density olefin-based polymer, and a catalyst composition including the same.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 29, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yoon Hee Cho, Jung Ho Jun, Jin Sam Gong, Choong Hoon Lee, Seung Hwan Jung
  • Publication number: 20180371116
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.
    Type: Application
    Filed: September 4, 2018
    Publication date: December 27, 2018
    Applicant: LG CHEM, LTD.
    Inventors: A Rim KIM, Dong Eun KIM, Jin Sam GONG, Seung Hwan JUNG, Hae Woong PARK
  • Patent number: 10093755
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having a low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: October 9, 2018
    Assignee: LG CHEM, LTD.
    Inventors: A Rim Kim, Dong Eun Kim, Jin Sam Gong, Seung Hwan Jung, Hae Woong Park
  • Publication number: 20180201706
    Abstract: The present invention provides an olefin-based polymer which satisfies the following conditions of (1) to (4) and is capable of exhibiting improved impact strength without degrading mechanical properties such as tensile strength: (1) density (d): from 0.850 to 0.910 g/cc, (2) melting index (MI, 190° C., 2.16 kg load conditions): from 0.1 to 100 g/10 min, (3) molecular weight distribution (MWD): from 1.5 to 3.0, and (4) two peaks are shown in a temperature range of ?20° C. to 120° C. when taking measurements of temperature rising elution fractionation (TREF), and a relation of T(90)?T(50)?60° C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).
    Type: Application
    Filed: December 8, 2016
    Publication date: July 19, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sang Eun Park, Hae Woong Park, Choong Hoon Lee, Seung Hwan Jung, Ji Yoon Woo, Hyo Ju Kim, Young Woo Lee
  • Publication number: 20180194874
    Abstract: The present invention relates to a transition metal complex that exhibits high activity in the polymerization reaction of olefin monomers and improved copolymerization activity, thus enabling the preparation of a low density, high molecular weight polyolefin, a catalyst composition including the same, and a method for preparing a polyolefin using the composition.
    Type: Application
    Filed: October 20, 2016
    Publication date: July 12, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Dong Eun Kim, A Rim Kim, Jin Sam Gong, Choong Hoon Lee, Seung Hwan Jung