Patents by Inventor Kyeong Hwan HAN

Kyeong Hwan HAN 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: 20240400784
    Abstract: A method for screening a solvent for extracting polyvinyl chloride (PVC) from waste using the following Equation 1: PVC ? swelling ? score = x 1 ? Dipole + x 2 ? Asphericity + x 3 ? dH + x 4 ? Polar ? Surface ? Area where x1, x2, x3, and x4 are each a real number from 0 to 5, Dipole is a dipole moment of solvent molecules, Asphericity is an asphericity of the solvent molecules, dH is a Hansen solubility parameter for a hydrogen bonding of the solvent molecules, and Polar Surface Area is a fractional polar surface area. A method for recycling waste is also provided. Additionally, a recycled polyvinyl chloride and a recycled composition are provided.
    Type: Application
    Filed: September 2, 2022
    Publication date: December 5, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Seungha Kim, Eunbyeol Ko, Kyoung Hoon Kim, Hyung Sop Kim, Gahyeon Lee, Seung Yong Lee, Yoonsun Jang, Kyeong Hwan Han
  • Publication number: 20240392094
    Abstract: A method for screening a solvent for extracting polyvinyl chloride (PVC) from waste using the following Equation 1: PVC ? solubility ? score = x 1 ? exp ? ( - x 2 ? ? pvc sol - x 3 ? ? dop sol ) + x 4 ? exp ? ( - x 5 ? r pvc - x 6 ? r dop ) - x 7 ? exp ? ( - x 8 ? V sol ) + x 9 , ?ij is a chemical potential of the solvent, and in ?ij, i is a solute and j is the solvent, ri is a Hansen solubility parameter distance of the solvent, Vsol is a molecular volume of the solvent, sol is the solvent, pvc is polyvinyl chloride, and dop is diethylhexyl phthalate. A method for recycling waste is also provided. Additionally, a recycled polyvinyl chloride and a recycled composition are provided.
    Type: Application
    Filed: September 2, 2022
    Publication date: November 28, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Kyeong Hwan Han, Eunbyeol Ko, Kyoung Hoon Kim, Seungha Kim, Hyung Sop Kim, Gahyeon Lee, Seung Yong Lee, Yoonsun Jang
  • Publication number: 20240376284
    Abstract: A method for screening a solvent for extracting acrylonitrile-butadiene-styrene (ABS) from waste using the following Equation 1: EScore=X1 exp(?mixE)+x2[log(x3Mvola)+log(x4HSPb)]+c, where mixE is the mixing energy between ABS and the solvent, Mvol is the molar volume of the solvent, HSP is the Hansen solubility parameter, x1, x2, x3, and x4 are each a real number from ?1 to 1, a and b are each a real number from 0 to 1, and c is a real number from ?10 to 10. A method for recycling waste having ABS is also provided. Additionally, a recycled acrylonitrile-butadiene-styrene copolymer and a recycled acrylonitrile-butadiene-styrene copolymer composition_are provided.
    Type: Application
    Filed: September 2, 2022
    Publication date: November 14, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Eunbyeol Ko, Kyoung Hoon Kim, Seungha Kim, Hyung Sop Kim, Gahyeon Lee, Seung Yong Lee, Yoonsun Jang, Kyeong Hwan Han
  • Publication number: 20240376285
    Abstract: A method for screening a solvent for extracting acrylonitrile-butadiene-styrene (ABS) from waste using the following Equation 1: ABS solubility score=x1 Log10Molecular Weight+x2IAC_Mean where Molecular Weight is the molecular weight of the solvent, IAC_Mean is the average information by an atomic number, and x1 and x2 are each a real number from 0 to 5. A method for recycling waste having ABS including screening the solvent using Equation 1 and extracting the ABS from the waste using the screened solvent is also provided. Additionally, a recycled acrylonitrile-butadiene-styrene copolymer and a recycled acrylonitrile-butadiene-styrene copolymer composition are provided.
    Type: Application
    Filed: September 2, 2022
    Publication date: November 14, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Seungha Kim, Eunbyeol Ko, Kyoung Hoon Kim, Hyung Sop Kim, Gahyeon Lee, Seung Yong Lee, Yoonsun Jang, Kyeong Hwan Han
  • Publication number: 20240234944
    Abstract: The present disclosure relates to a crosslinked structure-containing polyolefin porous support which has a number of double bonds present in the polyolefin chains of 0.01-0.6 per 1000 carbon atoms, as determined by 1H-NMR, and includes a crosslinked structure having polymer chains interconnected directly with one another, a crosslinked structure-containing separator for a lithium secondary battery including the same and a method for manufacturing the same, and a lithium secondary battery including the separator. The crosslinked structure-containing separator for a lithium secondary battery has improved high-temperature safety, and thus can minimize degradation of the performance of a lithium secondary battery including the separator, even after storing the lithium secondary battery at high temperature.
    Type: Application
    Filed: May 9, 2022
    Publication date: July 11, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Joo-Sung Lee, Sung-Jae Han, Sung Cik Mun, Kyeong-Hwan Han
  • Patent number: 11845711
    Abstract: A method for preparing an acrylonitrile dimer according to the present disclosure makes it is possible to efficiently recover an acrylonitrile dimerization catalyst while reducing the process load.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: December 19, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Wonseok Kim, Yujin An, Hyunchul Jung, Sae Hume Park, Wan Kyu Oh, Dongmin Kim, Kyeong Hwan Han
  • Publication number: 20230057964
    Abstract: A method for preparing an acrylonitrile dimer according to the present disclosure makes it is possible to efficiently recover an acrylonitrile dimerization catalyst while reducing the process load.
    Type: Application
    Filed: July 7, 2021
    Publication date: February 23, 2023
    Inventors: Wonseok KIM, Yujin AN, Hyunchul JUNG, Sae Hume PARK, Wan Kyu OH, Dongmin KIM, Kyeong Hwan HAN