Patents by Inventor Dong Cheol Choe

Dong Cheol Choe 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: 11732062
    Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time. In addition, the preparation method according to the present invention may prepare the modification polymerization initiator with high purity in high yield.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: August 22, 2023
    Inventors: Dong Cheol Choe, Jae Hoon Choe, Hyeon Hui Kim, Jong Young Choi, Jung Yong Lee, Won Jae Lee
  • Publication number: 20230047767
    Abstract: The invention pertains to a method of removing a layer of a lift-off fluoropolymer layer from a substrate using a particular stripping solvent, and to a lithographic process using said combination of lift-off fluoropolymer and stripping solvent, in particular for the manufacture of OLED devices.
    Type: Application
    Filed: December 11, 2020
    Publication date: February 16, 2023
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
    Inventors: Jung-Yul Lee, Dong-Cheol Choe, Min-Soo Yoon, Laura Ponta, Mattia Bassi
  • Patent number: 11472818
    Abstract: The present invention relates to a method for preparing a modification polymerization initiator with a high conversion ratio by minimizing side reactions. According to the method for preparing a modification polymerization initiator, a modification polymerization initiator which may easily initiate polymerization and provide a polymer with a functional group having affinity with a filler, may be prepared. Particularly, by performing the method using a continuous reactor, the production of by-products may be decreased, and as a result, the conversion ratio may be increased and a modification polymerization initiator with high purity may be prepared in a high yield.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 18, 2022
    Inventors: Jung Yong Lee, Dong Cheol Choe, Won Jae Lee, Jae Hoon Choe, Hyeon Hui Kim, Jong Young Choi
  • Patent number: 11254801
    Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: February 22, 2022
    Inventors: Jung Yong Lee, Jae Hoon Choe, Dong Cheol Choe, Jong Young Choi, Won Jae Lee, Hyeon Hui Kim
  • Patent number: 11214643
    Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: January 4, 2022
    Inventors: Dong Cheol Choe, Jae Hoon Choe, Jung Yong Lee, Hyeon Hui Kim, Jong Young Choi, Won Jae Lee
  • Patent number: 11214665
    Abstract: A polymerization initiator composition includes isomers of the polymerization initiator, thereby preventing instability and inertness of the polymerization initiator and physical property degradation of the SSBR, minimizing by-products and unreacted materials, and remarkably improving a conversion ratio. In addition, when the polymerization initiator composition according to the present invention is used, there is no need to add a polar additive separately upon polymer polymerization, since the polar additive is already added at the time of preparing the polymerization initiator. Further, the polymer initiator composition has high polarity so that the hydrophobic SSBR and the hydrophilic silica can be effectively dispersed.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: January 4, 2022
    Inventors: Jae Hoon Choe, Jong Young Choi, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jung Yong Lee, Chan Joong Kim, Myung Han Lee, Hye Jin Han
  • Patent number: 11028189
    Abstract: An method for preparing an anion polymerization initiator, a device for preparing the same and an anion polymerization initiator prepared therefrom are provided. And the method for preparing an anion polymerization initiator according to present invention is characterized in that an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: June 8, 2021
    Inventors: Jae Hoon Choe, Jong Young Choi, Jung Yong Lee, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jong Min Shin, Woong Chan Jeong, Kwang Ho Song
  • Publication number: 20210147599
    Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time.
    Type: Application
    Filed: June 19, 2019
    Publication date: May 20, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Dong Cheol Choe, Jae Hoon Choe, Jung Yong Lee, Hyeon Hui Kim, Jong Young Choi, Won Jae Lee
  • Publication number: 20200299419
    Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time. In addition, the preparation method according to the present invention may prepare the modification polymerization initiator with high purity in high yield.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 24, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Dong Cheol Choe, Jae Hoon Choe, Hyeon Hui Kim, Jong Young Choi, Jung Yong Lee, Won Jae Lee
  • Publication number: 20200079797
    Abstract: The present invention relates to a method for preparing a modification polymerization initiator with a high conversion ratio by minimizing side reactions. According to the method for preparing a modification polymerization initiator, a modification polymerization initiator which may easily initiate polymerization and provide a polymer with a functional group having affinity with a filler, may be prepared. Particularly, by performing the method using a continuous reactor, the production of by-products may be decreased, and as a result, the conversion ratio may be increased and a modification polymerization initiator with high purity may be prepared in a high yield.
    Type: Application
    Filed: October 12, 2018
    Publication date: March 12, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jung Yong Lee, Dong Cheol Choe, Won Jae Lee, Jae Hoon Choe, Hyeon Hui Kim, Jong Young Choi
  • Publication number: 20190375912
    Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.
    Type: Application
    Filed: August 21, 2018
    Publication date: December 12, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Yong Lee, Jae Hoon Choe, Dong Cheol Choe, Jong Young Choi, Won Jae Lee, Hyeon Hui Kim
  • Publication number: 20190330447
    Abstract: A polymerization initiator composition includes isomers of the polymerization initiator, thereby preventing instability and inertness of the polymerization initiator and physical property degradation of the SSBR, minimizing by-products and unreacted materials, and remarkably improving a conversion ratio. In addition, when the polymerization initiator composition according to the present invention is used, there is no need to add a polar additive separately upon polymer polymerization, since the polar additive is already added at the time of preparing the polymerization initiator. Further, the polymer initiator composition has high polarity so that the hydrophobic SSBR and the hydrophilic silica can be effectively dispersed.
    Type: Application
    Filed: December 27, 2017
    Publication date: October 31, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jae Hoon Choe, Jong Young Choi, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jung Yong Lee, Chan Joong Kim, Myung Han Lee, Hye Jin Han
  • Patent number: 10301327
    Abstract: A method for preparing an anionic polymerization initiator, a device for manufacturing the same, and an anionic polymerization initiator prepared therefrom is provided. And the method for preparing an anionic polymerization initiator according to the present invention is characterized in that in a continuous reactor an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: May 28, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jae Hoon Choe, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jong Young Choi, Jung Yong Lee, Woong Chan Jeong, Jong Min Shin, Chan Joong Kim, Kwang Ho Song
  • Publication number: 20180291038
    Abstract: A method for preparing an anionic polymerization initiator, a device for manufacturing the same, and an anionic polymerization initiator prepared therefrom is provided. And the method for preparing an anionic polymerization initiator according to the present invention is characterized in that in a continuous reactor an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.
    Type: Application
    Filed: July 27, 2016
    Publication date: October 11, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jae Hoon Choe, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jong Young Choi, Jung Yong Lee, Woong Chan Jeong, Jong Min Shin, Chan Joong Kim, Kwang Ho Song
  • Publication number: 20180208684
    Abstract: An method for preparing an anion polymerization initiator, a device for preparing the same and an anion polymerization initiator prepared therefrom are provided. And the method for preparing an anion polymerization initiator according to present invention is characterized in that an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.
    Type: Application
    Filed: July 27, 2016
    Publication date: July 26, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Jae Hoon Choe, Jong Young Choi, Jung Yong Lee, Dong Cheol Choe, Hyun Ju Kim, Hyeon Hui Kim, Jong Min Shin, Woong Chan Jeong, Kwang Ho Song
  • Patent number: 9711571
    Abstract: A smart window is provided. The smart window includes an organic light-emitting device including first and second electrodes corresponding to each other, and a light-emitting layer disposed between the first and second electrodes and containing an organic light-emitting material; an electrochromic device including an electrochromic layer containing an electrochromic material and disposed over the organic light-emitting device, wherein the organic light-emitting device is disposed under the electrochromic device to form a light transmission portion in a predetermined region, and wherein the first electrode is formed of a transparent electrode or a high-reflection translucent electrode, and the second electrode is formed of a high-reflection electrode.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 18, 2017
    Assignee: UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: Jang Hyuk Kwon, Dong Cheol Choe
  • Publication number: 20160225832
    Abstract: A smart window is provided. The smart window includes an organic light-emitting device including first and second electrodes corresponding to each other, and a light-emitting layer disposed between the first and second electrodes and containing an organic light-emitting material; an electrochromic device including an electrochromic layer containing an electrochromic material and disposed over the organic light-emitting device, wherein the organic light-emitting device is disposed under the electrochromic device to form a light transmission portion in a predetermined region, and wherein the first electrode is formed of a transparent electrode or a high-reflection translucent electrode, and the second electrode is formed of a high-reflection electrode.
    Type: Application
    Filed: September 5, 2014
    Publication date: August 4, 2016
    Inventors: Jang Hyuk Kwon, Dong Cheol Choe