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: 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
  • Publication number: 20190256635
    Abstract: The present invention relates to a method for preparing a modified conjugated diene-based polymer, and more particularly, provides a method for preparing a modified conjugated diene-based polymer including a step of polymerizing a conjugated diene-based monomer in the presence of an organometal compound in a hydrocarbon solvent to prepare an active polymer which is coupled with an organometal (S1); and a step of reacting or coupling the active polymer prepared in step (S1) with a modifier (S2), wherein step (S1) is continuously performed in two or more polymerization reactors, and a polymerization conversion ratio in a first reactor among the polymerization reactors is 50% or less.
    Type: Application
    Filed: December 7, 2017
    Publication date: August 22, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Kim, Jun Seok Ko, No Ma Kim, Yu Jin Kim, Ki Seok Son, Hae Sung Sohn, Ro Mi Lee, Sang Mi Lee, Tae Chul Lee, He Seung Lee
  • Publication number: 20190083949
    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: Application
    Filed: November 30, 2017
    Publication date: March 21, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Won Hee Kim, Hae Sung Sohn, No Ma Kim
  • Publication number: 20180201699
    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: Application
    Filed: December 16, 2016
    Publication date: July 19, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Tae Chul Lee, Hae Sung Sohn, He Seung Lee, No Ma Kim
  • Patent number: 8207282
    Abstract: A novel polymeric compound is provided. The polymeric compound is highly compatible with reinforcing materials. Particularly, the polymeric compound is highly miscible with inorganic reinforcing materials in the manufacture of a tire. Further provided is a novel bifunctional initiator necessary to prepare the polymeric compound. The bifunctional initiator contains amine moieties. Active ends of the polymer are modified with an alkoxysilane compound. The polymer has an improved affinity for carbon black and silica as reinforcing materials in the manufacture of a tire. Therefore, the use of the polymer can achieve desired physical properties required in a tire, e.g., high wet traction, low rolling resistance and high tread wear.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: June 26, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Du Weon Yoon, Tae Chul Lee, Jeong Hyun Noh
  • Publication number: 20120101212
    Abstract: A novel polymeric compound is provided. The polymeric compound is highly compatible with reinforcing materials. Particularly, the polymeric compound is highly miscible with inorganic reinforcing materials in the manufacture of a tire. Further provided is a novel bifunctional initiator necessary to prepare the polymeric compound. The bifunctional initiator contains amine moieties. Active ends of the polymer are modified with an alkoxysilane compound. The polymer has an improved affinity for carbon black and silica as reinforcing materials in the manufacture of a tire. Therefore, the use of the polymer can achieve desired physical properties required in a tire, e.g., high wet traction, low rolling resistance and high tread wear.
    Type: Application
    Filed: September 18, 2009
    Publication date: April 26, 2012
    Applicant: LG CHEM LTD.
    Inventors: Du Weon Yoon, Tae Chul Lee, Jeong Hyun Noh