Patents by Inventor Seong-Yong Ahn

Seong-Yong Ahn 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).

  • METHOD FOR PRODUCTION OF VINYL CHLORIDE-BASED POLYMER BY SUSPENSION POLYMERIZATION
    Publication number: 20100190946
    Abstract: The present invention provides a method of preparing vinyl chloride polymer having excellent processability and high bulk density by the separate stepwise additions of vinyl chloride monomer during suspension polymerization.
    Type: Application
    Filed: February 9, 2007
    Publication date: July 29, 2010
    Applicant: LG CHEM, LTD
    Inventors: Seong-Yong Ahn, Kyung-Hyun Kim, Young-Suk Kim, Jong-Hun Cho, Chang-Ryang Jang
  • Dispersant for manufacturing vinyl chloride resin and method of manufacturing vinyl chloride resin using the same
    Publication number: 20070232771
    Abstract: The present invention relates to a dispersant for manufacturing vinyl chloride resin and a method of manufacturing vinyl chloride resin using the same. More precisely, this invention relates to a dispersant which is prepared by RAFT, harbors a hydrophobic group and one or more hydrophilic groups not containing a hydroxy group, and has a polydispersity index of 1.1-2, and a method of manufacturing vinyl chloride resin using the said dispersant. The dispersant for manufacturing vinyl chloride resin of the present invention and the manufacturing method of the present invention facilitates the preparation of vinyl chloride resin characterized by even size distribution, excellent sphericity and proper particle diameter.
    Type: Application
    Filed: September 8, 2006
    Publication date: October 4, 2007
    Inventors: Yi-Rac Choi, Kyung-Hyun Kim, Seong-Yong Ahn, Min-Ju Yi, Hyun-Kyou Ha