Patents by Inventor Young Hoon Na

Young Hoon Na 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).

  • Ethylene-vinyl acetate copolymer and preparation method thereof
    Patent number: 11584814
    Abstract: Provided are an ethylene-vinyl acetate copolymer having a high degree of crosslinking by controlling a temperature difference in an autoclave reactor and an input ratio of an initiator during polymerization, even though a reduced amount of a crosslinking agent is used, and a preparation method thereof.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: February 21, 2023
    Inventors: Yutaek Sung, Youn Sun Nam, Choong Hoon Lee, Young Hoon Na, Jeongyong Lee, Hyojoon Lee
  • Ethylene vinyl acetate copolymer and method of preparing the same
    Patent number: 10961333
    Abstract: An ethylene vinyl acetate copolymer with a high degree of cross-linking and a method of preparing the same are provided, by controlling a temperature and polymerization heat in an autoclave reactor during polymerization, even when a reduced amount of a cross-linking agent is used.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 30, 2021
    Inventors: Yutaek Sung, Youn Sun Nam, Eun Jung Joo, Choong Hoon Lee, Dae Young Shin, Sungho Choi, Juho Yoon, Young Hoon Na, Hyojoon Lee
  • Ethylene-Vinyl Acetate Copolymer And Preparation Method Thereof
    Publication number: 20210024667
    Abstract: Provided are an ethylene-vinyl acetate copolymer having a high degree of crosslinking by controlling a temperature difference in an autoclave reactor and an input ratio of an initiator during polymerization, even though a reduced amount of a crosslinking agent is used, and a preparation method thereof.
    Type: Application
    Filed: July 4, 2019
    Publication date: January 28, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Yutaek Sung, Youn Sun Nam, Choong Hoon Lee, Young Hoon Na, Jeongyong Lee, Hyojoon Lee
  • Compound and transition metal compound
    Patent number: 10723818
    Abstract: The present invention relates to a novel ligand compound represented by Formula 1 and a novel transition metal compound represented by Formula 2, and the novel ligand compound and transition metal compound according to the present invention has high comonomer incorporation effect in the preparation of an olefinic polymer having a low density and a high molecular weight, and thus can be usefully used as a catalyst for a polymerization reaction.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: July 28, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hyo Jung Han, Eun Jung Lee, Choong Hoon Lee, In Sung Park, Seul Ki Kim, Young Hoon Na, Ik Je Choe
  • Ethylene Vinyl Acetate Copolymer and Method of Preparing the Same
    Publication number: 20200140586
    Abstract: An ethylene vinyl acetate copolymer with a high degree of cross-linking and a method of preparing the same are provided, by controlling a temperature and polymerization heat in an autoclave reactor during polymerization, even when a reduced amount of a cross-linking agent is used.
    Type: Application
    Filed: August 31, 2018
    Publication date: May 7, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Yutaek Sung, Youn Sun Nam, Eun Jung Joo, Choong Hoon Lee, Dae Young Shin, Sungho Choi, Juho Yoon, Young Hoon Na, Hyojoon Lee
  • Novel Compound and Transition Metal Compound
    Publication number: 20200095347
    Abstract: The present invention relates to a novel ligand compound represented by Formula 1 and a novel transition metal compound represented by Formula 2, and the novel ligand compound and transition metal compound according to the present invention has high comonomer incorporation effect in the preparation of an olefinic polymer having a low density and a high molecular weight, and thus can be usefully used as a catalyst for a polymerization reaction.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hyo Jung Han, Eun Jung Lee, Choong Hoon Lee, In Sung Park, Seul Ki Kim, Young Hoon Na, Ik Je Choe
  • Ligand compound and transition metal compound
    Patent number: 10538603
    Abstract: The present invention relates to a novel ligand compound represented by Formula 1 and a novel transition metal compound represented by Formula 2, and the novel ligand compound and transition metal compound according to the present invention has high comonomer incorporation effect in the preparation of an olefinic polymer having a low density and a high molecular weight, and thus can be usefully used as a catalyst for a polymerization reaction.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hyo Jung Han, Eun Jung Lee, Choong Hoon Lee, In Sung Park, Seul Ki Kim, Young Hoon Na, Ik Je Choe
  • NOVEL LIGAND COMPOUND AND TRANSITION METAL COMPOUND
    Publication number: 20180223010
    Abstract: The present invention relates to a novel ligand compound represented by Formula 1 and a novel transition metal compound represented by Formula 2, and the novel ligand compound and transition metal compound according to the present invention has high comonomer incorporation effect in the preparation of an olefinic polymer having a low density and a high molecular weight, and thus can be usefully used as a catalyst for a polymerization reaction.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 9, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Hyo Jung Han, Eun Jung Lee, Choong Hoon Lee, In Sung Park, Seul Ki Kim, Young Hoon Na, Ik Je Choe