Patents by Inventor Jae-II Chung

Jae-II Chung 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: 20140004330
    Abstract: The present invention relates to a polylactic acid resin and a packaging film comprising the same, wherein the polylactic acid resin is useful as a packaging material due to excellent properties including heat resistance as well as optimized flexibility. The polylactic acid resin comprises: a hard segment including a predetermined polylactic acid repeating unit; and a soft segment including a polyurethane polyol repeating unit in which certain polyether-based polyol repeating units are linearly connected in a medium of a urethane bond. In addition, the polylactic acid resin has a glass transition temperature (Tg) of 25-55° C.
    Type: Application
    Filed: November 2, 2011
    Publication date: January 2, 2014
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Young-Man Yoo, Tae-Woong Lee, Kye-Yune Lee, Jae-II Chung