Patents by Inventor Mi-Sun Cha

Mi-Sun Cha 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).

  • Fluorine-containing amphoteric polymer for surface coating and preparation method thereof
    Patent number: 7132489
    Abstract: The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof in which a hydrocarbon compound with hydrophilic groups serves as a main chain and a macromonomer prepared by copolymerization of an unsaturated hydrocarbon compound and a perfluoro alkyl compound is incorporated into side chains, thereby imparting amphoteric property on the present polymer. Therefore, the present polymer allows self-emulsification and shows soil release, water-repellent and oil-repellent properties with no help of emulsifier, applicable to a variety of industrial fields such as coating, adhesive, fiber, precision chemistry, biological/biochemical industry, electric/electronic, automobile and metal industries.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: November 7, 2006
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Soo-Bok Lee, In Jun Park, Dong-Kwon Kim, Jeong-Hoon Kim, Jong-Wook Ha, Won-Wook So, Kwang-Won Lee, Kwang-Han Kim, Mi-Sun Cha
  • Fluorine-containing amphoteric polymer for surface coating and preparation method thereof
    Publication number: 20050096444
    Abstract: The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof in which a hydrocarbon compound with hydrophilic groups serves as a main chain and a macromonomer prepared by copolymerization of an unsaturated hydrocarbon compound and a perfluoro alkyl compound is incorporated into side chains, thereby imparting amphoteric property on the present polymer. Therefore, the present polymer allows self-emulsification and shows soil release, water-repellent and oil-repellent properties with no help of emulsifier, applicable to a variety of industrial fields such as coating, adhesive, fiber, precision chemistry, biological/biochemical industry, electric/electronic, automobile and metal industries.
    Type: Application
    Filed: April 30, 2004
    Publication date: May 5, 2005
    Inventors: Soo-Bok Lee, In Park, Dong-Kwon Kim, Jeong-Hoon Kim, Jong-Wook Ha, Won-Wook So, Kwang-Won Lee, Kwang-Han Kim, Mi-Sun Cha