Patents by Inventor Hwayoon Jung

Hwayoon Jung 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).

  • Super absorbent polymer
    Patent number: 10821418
    Abstract: The present invention relates to a super absorbent polymer exhibiting more improved liquid permeability and/or absorption rate while maintaining excellent absorption performance. Such super absorbent polymer comprises a base polymer powder including a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked through an alkylene carbonate having 2 to 5 carbon atoms, and satisfies predetermined physical properties.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Dae Woo Nam, Chang Sun Han, Hyemin Lee, Hwayoon Jung, Hyung Ki Yoon
  • SUPER ABSORBENT POLYMER
    Publication number: 20180304232
    Abstract: The present invention relates to a super absorbent polymer exhibiting more improved liquid permeability and/or absorption rate while maintaining excellent absorption performance. Such super absorbent polymer comprises a base polymer powder including a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked through an alkylene carbonate having 2 to 5 carbon atoms, and satisfies predetermined physical properties.
    Type: Application
    Filed: January 10, 2017
    Publication date: October 25, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Dae Woo Nam, Chang Sun Han, Hyemin Lee, Hwayoon Jung, Hyung Ki Yoon
  • Method for preparing super absorbent polymer and super absorbent polymer prepared therefrom
    Patent number: 9700873
    Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin having fast absorption rate and high absorption properties under pressure by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: July 11, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Hwayoon Jung
  • Preparation method of superabsorbent polymer
    Patent number: 9701796
    Abstract: Provided is a method of preparing a superabsorbent polymer. According to the method of preparing the superabsorbent polymer of the present invention, provided is a superabsorbent polymer having improved physical properties, in which the superabsorbent polymer has improved absorption rate and liquid permeability without reduction in centrifuge retention capacity or absorbency under load.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 11, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Hwayoon Jung, Chang Sun Han, Chul Hee Ryu, Mi Young Kim, Tae Bin Ahn
  • METHOD FOR PREPARING SUPER ABSORBENT POLYMER AND SUPER ABSORBENT POLYMER PREPARED THEREFROM
    Publication number: 20160318002
    Abstract: The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention can provide a super absorbent resin having fast absorption rate and high absorption properties under pressure by using the polycarboxylic acid-based copolymer under pulverization of the hydrous gel phase polymer.
    Type: Application
    Filed: October 19, 2015
    Publication date: November 3, 2016
    Applicant: LG Chem, Ltd.
    Inventors: Yong Hun Lee, Tae Bin Ahn, Chang Sun Han, Hwayoon Jung
  • PREPARATION METHOD OF SUPERABSORBENT POLYMER
    Publication number: 20160311985
    Abstract: Provided is a method of preparing a superabsorbent polymer. According to the method of preparing the superabsorbent polymer of the present invention, provided is a superabsorbent polymer having improved physical properties, in which the superabsorbent polymer has improved absorption rate and liquid permeability without reduction in centrifuge retention capacity or absorbency under load.
    Type: Application
    Filed: December 5, 2014
    Publication date: October 27, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Hwayoon Jung, Chang Sun Han, Chul Hee Ryu, Mi Young Kim, Tae Bin Ahn