Patents by Inventor Tae Chul Lee

Tae Chul 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).

  • Publication number: 20250136724
    Abstract: A method for continuously preparing a catalyst composition for preparing a catalyst composition having improved catalyst activity by pre-treating a hydrogen-bonded lanthanide rare earth element compound and/or an oligomer type of a lanthanide rare earth element compound of Formula 1, which induce the deterioration of the catalyst activity, and a method for preparing a conjugated diene-based polymer using the catalyst composition prepared thereby are described, wherein all the variables are described herein.
    Type: Application
    Filed: February 15, 2023
    Publication date: May 1, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Suk Youn Kang, Tae Chul Lee, Hae Sung Sohn, Dong Hui Kim, Sung HO Park, Ju Ryang Bae, Seo Won Choi
  • Patent number: 12275806
    Abstract: The present invention relates to a method for preparing a modification initiator, the method capable of reducing side reactions to the minimum and obtaining the modification initiator with a high conversion rate, and an apparatus for performing the same, wherein the method includes (S1) reacting a first fluid including a modification functional group-containing compound and a conjugated diene-based monomer and a second fluid including a polymerization initiation functional group-containing compound, and (S2) obtaining a third fluid including a modification initiator prepared by the reaction of Step S1, wherein the modification functional group-containing compound is used in a ratio of greater than 1 mole based on 1 mole of the polymerization initiation functional group-containing compound, the conjugated diene-based monomer is used in a ratio of 1 mole to 4 moles based on 1 mole of the modification functional group-containing compound, and Step S1 and Step S2 are continuously performed.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: April 15, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Tae Chul Lee, He Seung Lee, No Ma Kim, Heung Yeal Choi, Youk Reol Na
  • Publication number: 20250115690
    Abstract: A method for preparing a catalyst composition for preparing a catalyst composition having improved catalyst activity by pre-treating a hydrogen-bonded lanthanide rare earth element compound and/or an oligomer type of a lanthanide rare earth element compound of Formula 1, which induce the deterioration of the catalyst activity, and a method for preparing a conjugated diene-based polymer using the catalyst composition prepared thereby are described, wherein all the variables are described herein.
    Type: Application
    Filed: February 15, 2023
    Publication date: April 10, 2025
    Applicant: LG CHEM, LTD.
    Inventors: Tae Chul Lee, Ju Ryang Bae, Seo Won Choi, Hae Sung Sohn, Suk Youn Kang, Sung Ho Park
  • Publication number: 20250101154
    Abstract: Provided are a method for preparing a catalyst composition for preparing a catalyst composition having improved catalyst activity by pre-treating a hydrogen-bonded lanthanide rare earth element compound and/or an oligomer type of a lanthanide rare earth element compound of Formula 1, which induce the deterioration of the catalyst activity, and a method for preparing a conjugated diene-based polymer using the catalyst composition prepared thereby, wherein all the variables are described herein.
    Type: Application
    Filed: February 15, 2023
    Publication date: March 27, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Seo Won Choi, Tae Chul Lee, Ju Ryang Bae, Dong Hui Kim, Hyun Woong Park, Sung Ho Park
  • Patent number: 12209149
    Abstract: A continuous preparation system of a conjugated diene-based polymer having improved rolling resistance properties is provided. By utilizing the continuous preparation system a polymerization conversion ratio at an initial stage of polymerization is easy to control, long time operation is possible and productivity is excellent.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: January 28, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Su Hwa Kim, No Ma Kim, Jun Seok Ko
  • Patent number: 12098232
    Abstract: A neodymium-catalyzed modified conjugated diene-based polymer having excellent affinity with a filler is provided. A method for preparing the same and a rubber composition including the same are also provided. The neodymium-catalyzed modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier represented by Formula 1 in at least one terminal of a polymer.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: September 24, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Suk Youn Kang, Ju Ryang Bae, Seo Won Choi, Tae Chul Lee
  • Publication number: 20230076797
    Abstract: The present invention relates to a conjugated diene-based polymer having high processability and excellent compounding properties, a preparation method thereof and a rubber composition including same, and provides a neodymium-catalyzed conjugated diene-based polymer satisfying all conditions of (a) to (c), a preparation method thereof and a rubber composition including same.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 9, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Sung Ho PARK, Tae Chul LEE, Su Hwa KIM, Dong Hui KIM
  • Publication number: 20220396648
    Abstract: Disclosed is an imine group-containing novel compound which is useful as a polymer modifier, a modified conjugated diene-based polymer including a functional group derived from the novel compound and having excellent affinity with a filler, a method for preparing the polymer, and a rubber composition including the polymer, and provides an imine group-containing compound represented by Formula 1, a modified conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing the polymer.
    Type: Application
    Filed: July 21, 2021
    Publication date: December 15, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Suk Youn KANG, Tae Chul LEE, Dong Hui KIM, Seo Won CHOI
  • Patent number: 11485800
    Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a functional group derived from a modification monomer represented by Formula 1 and a functional group derived from a modifier, and the polymer has a unimodal molecular weight distribution, and a polydispersity index of 1.0 to less than 1.7. The polymer has excellent processability, tensile properties and viscoelasticity properties.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: November 1, 2022
    Inventors: Tae Chul Lee, Min Soo Kim, Ki Seok Son, No Ma Kim
  • Publication number: 20220289871
    Abstract: The present invention relates to a method for preparing a modified conjugated diene-based polymer having excellent physical properties such as tensile properties and viscoelasticity properties with a high modification ratio.
    Type: Application
    Filed: September 18, 2020
    Publication date: September 15, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hyo Jin Bae, Su Hwa Kim, Kyoung Hwan Oh, Tae Chul Lee
  • Publication number: 20220213239
    Abstract: The present invention relates to a method for preparing a modification initiator, the method capable of reducing side reactions to the minimum and obtaining the modification initiator with a high conversion rate, and an apparatus for performing the same, wherein the method includes (S1) reacting a first fluid including a modification functional group-containing compound and a conjugated diene-based monomer and a second fluid including a polymerization initiation functional group-containing compound, and (S2) obtaining a third fluid including a modification initiator prepared by the reaction of Step S1, wherein the modification functional group-containing compound is used in a ratio of greater than 1 mole based on 1 mole of the polymerization initiation functional group-containing compound, the conjugated diene-based monomer is used in a ratio of 1 mole to 4 moles based on 1 mole of the modification functional group-containing compound, and Step S1 and Step S2 are continuously performed.
    Type: Application
    Filed: October 12, 2020
    Publication date: July 7, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, He Seung Lee, No Ma Kim, Heung Yeal Choi, Youk Reol Na
  • Publication number: 20220195075
    Abstract: A continuous preparation system of a conjugated diene-based polymer having improved rolling resistance properties is provided. By utilizing the continuous preparation system, a polymerization conversion ratio at an initial stage of polymerization is easy to control, long time operation is possible and productivity is excellent.
    Type: Application
    Filed: December 24, 2020
    Publication date: June 23, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Su Hwa Kim, No Ma Kim, Jun Seok Ko
  • Publication number: 20220081496
    Abstract: A neodymium-catalyzed modified conjugated diene-based polymer having excellent affinity with a filler is provided. A method for preparing the same and a rubber composition including the same are also provided. The neodymium-catalyzed modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier represented by Formula 1 in at least one terminal of a polymer.
    Type: Application
    Filed: September 25, 2020
    Publication date: March 17, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Suk Youn Kang, Ju Ryang Bae, Seo Won Choi, Tae Chul Lee
  • Patent number: 11001661
    Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more, and a rubber composition including the same.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 11, 2021
    Inventors: Hae Sung Sohn, Tae Chul Lee, He Seung Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Kyung Chang Seo, Heung Yeal Choi
  • Patent number: 10995163
    Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of ?90° C. to ?50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 4, 2021
    Inventors: Ro Mi Lee, Tae Chul Lee, No Ma Kim, Youk Reol Na
  • Publication number: 20210079124
    Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a functional group derived from a modification monomer represented by Formula 1 and a functional group derived from a modifier, and the polymer has a unimodal molecular weight distribution, and a polydispersity index of 1.0 to less than 1.7. The polymer has excellent processability, tensile properties and viscoelasticity properties.
    Type: Application
    Filed: May 8, 2019
    Publication date: March 18, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Min Soo Kim, Ki Seok Son, No Ma Kim
  • Patent number: 10906019
    Abstract: The present invention relates to a method for producing a modified polymerization initiator, and more particularly, to a method for preparing a modified polymerization initiator, wherein the method includes the steps of: (S1) introducing a first fluid and a second fluid into a reactor, and reacting the compounds included in the fluids, and (S2) obtaining the modified polymerization initiator prepared by the reaction of the step (S1) through an outlet of the reactor, wherein the step (S1) and step (S2) are continuously performed, wherein in the step (S1), the flow amount of the first fluid and the second fluid is maintained constant at the time when the first fluid and the second fluid are mixed, and the flow rate of the first fluid is increased. Also, the present invention provides an apparatus for producing a modified polymerization initiator for performing the same.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 2, 2021
    Inventors: Tae Chul Lee, Won Hee Kim, Hae Sung Sohn, No Ma Kim
  • Publication number: 20210009722
    Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of ?90° C. to ?50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 14, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Ro Mi Lee, Tae Chul Lee, No Ma Kim, Youk Reol Na
  • Patent number: 10730968
    Abstract: The present invention relates to a method of preparing a modified conjugated diene-based polymer, and more particularly, to a method of preparing a modified conjugated diene-based polymer, including: (S1) preparing an active polymer with an organic metal bonded thereto by polymerizing a conjugated diene-based monomer in a hydrocarbon solvent in the presence of an organometallic compound; and (S2) mixing the active polymer prepared according to process S1 with a modifier, wherein the mixing of process S2 is performed at a Reynolds number of 20 or less for 1 minute or more, the Reynolds number being maintained within a range of ±5 of a Reynolds number when the modifier is added (wherein the range is between greater than 0 to 20 or less).
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: August 4, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Hae Sung Sohn, He Seung Lee, No Ma Kim
  • Publication number: 20200223968
    Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of 30 wt % or more, and a rubber composition including the same.
    Type: Application
    Filed: December 8, 2017
    Publication date: July 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hae Sung Sohn, Tae Chul Lee, He Seung Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Kyung Chang Seo, Heung Yeal Choi