Patents by Inventor Byoung-Yong Chung

Byoung-Yong 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).

  • Method of ethylene polymerization for producing products having various properties with high productivity and a tubular reactor used therefor
    Patent number: 7435784
    Abstract: A method for continuous ethylene polymerization under high pressure using a polymerization reaction zone comprises a primary reaction zone and a secondary reaction zone wherein the secondary reaction zone has a length of 1.5-6.5 times the length of the primary reaction zone and a cross-sectional area of 1.2-4 times the cross-sectional area of the primary reaction zone. Ethylene is fed continuously into the primary reaction zone at the starting point of the primary reaction zone. Low temperature initiator alone, or an initiator mixture containing mainly low temperature initiator is introduced into the primary reaction zone at the starting point of the primary reaction zone. Initiator alone or an initiator mixture is introduced into the secondary reaction zone at two or more different points of the secondary reaction zone. Ethylene polymer products of various physical properties are produced with high productivity, while the pressure drop is minimized.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: October 14, 2008
    Assignee: Samsung Total Petrochemicals Co., Ltd.
    Inventors: Jin-Suk Lee, Byoung-Yong Chung, Myung-Jae Lee, Kun Lo
  • Method of ethylene polymerization for producing products having various properties with high productivity and a tubular reactor used therefor
    Publication number: 20060149004
    Abstract: A method for continuous ethylene polymerization under high pressure using a polymerization reaction zone comprises a primary reaction zone and a secondary reaction zone wherein the secondary reaction zone has a length of 1.5-6.5 times the length of the primary reaction zone and a cross-sectional area of 1.2-4 times the cross-sectional area of the primary reaction zone. Ethylene is fed continuously into the primary reaction zone at the starting point of the primary reaction zone. Low temperature initiator alone, or an initiator mixture containing mainly low temperature initiator is introduced into the primary reaction zone at the starting point of the primary reaction zone. Initiator alone or an initiator mixture is introduced into the secondary reaction zone at two or more different points of the secondary reaction zone. Ethylene polymer products of various physical properties are produced with high productivity, while the pressure drop is minimized.
    Type: Application
    Filed: November 2, 2005
    Publication date: July 6, 2006
    Applicant: Samsung Total Petrochemicals Co., Ltd.
    Inventors: Jin-Suk Lee, Byoung-Yong Chung, Myung-Jae Lee, Kun Lo