Patents by Inventor Kil SAGONG

Kil SAGONG 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: 10377836
    Abstract: The present invention relates to a novel Group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the Group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. Therefore, it can be effectively used in polyolefin synthesis processes in which grades are controlled.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: August 13, 2019
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ui Gab Joung, Kil Sagong, Sung Hae Jun, Dong Ok Kim, Hye Ran Park, In Jun Lee
  • Patent number: 10364302
    Abstract: The present invention relates to a novel Group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the Group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. Therefore, it can be effectively used in polyolefin synthesis processes in which grades are controlled.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: July 30, 2019
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ui Gab Joung, Kil Sagong, Sung Hae Jun, Dong Ok Kim, Hye Ran Park, In Jun Lee
  • Patent number: 10160775
    Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: December 25, 2018
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ui Gab Joung, Dong Ok Kim, Dong Wook Kim, Ah Reum Kim, Hye Ran Park, Kil Sagong, Sung Hae Jun, Chun Sun Lee, Eun Yeong Hwang
  • Publication number: 20180002461
    Abstract: The present invention relates to a novel Group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the Group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. Therefore, it can be effectively used in polyolefin synthesis processes in which grades are controlled.
    Type: Application
    Filed: December 23, 2015
    Publication date: January 4, 2018
    Inventors: Ui Gab Joung, Kil Sagong, Sung Hae Jun, Dong Ok Kim, Hye Ran Park, In Jun Lee
  • Publication number: 20170369605
    Abstract: The present invention relates to a novel Group 4 transition metal compound, a method for preparing the compound, a catalyst composition comprising the compound, and a method for preparing a polyolefin comprising performing a polymerization reaction of olefin monomers, in the presence of the catalyst composition. Since the Group 4 transition metal compound of the present invention exhibits an excellent catalytic activity in polyolefin synthesis reactions, as well as having excellent thermal stability, it can be used for polyolefin synthesis reactions at high temperatures, and by changing the type of a central metal and ligand, the weight average molecular weight of synthesized polyolefins and the octene content in the polymer can be controlled. Therefore, it can be effectively used in polyolefin synthesis processes in which grades are controlled.
    Type: Application
    Filed: December 23, 2015
    Publication date: December 28, 2017
    Inventors: Ui Gab Joung, Kil Sagong, Sung Hae Jun, Dong Ok Kim, Hye Ran Park, In Jun Lee
  • Publication number: 20170233415
    Abstract: The present invention relates to a novel group 4 transition metal compound, a method for preparing the compound, a catalyst composition containing the compound, and a method for preparing a polyolefin, comprising a step for forming a polymerization reaction of olefin monomers in the presence of the catalyst composition. The group 4 transition metal compound of the present invention exhibits an excellent catalytic activity and has excellent thermal stability in a polyolefin synthesis reaction, and thus can be used even in a polyolefin synthesis reaction at a high temperature. In addition, the compound of the present invention can be advantageously used in the synthesis process of grade-controlled polyolefin since the weight average molecular weight of the synthesized polyolefin and the octane content in the polymer can be adjusted by varying the kinds of center metal and ligand.
    Type: Application
    Filed: August 28, 2015
    Publication date: August 17, 2017
    Inventors: Ui Gab JOUNG, Dong Ok KIM, Dong Wook KIM, Ah Reum KIM, Hye Ran PARK, Kil SAGONG, Sung Hae JUN, Chun Sun LEE, Eun Yeong HWANG