Patents Represented by Attorney Helen Odar

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  • Method for preparing 1-chloro-1-iodoethane
    Patent number: 5430208
    Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane which is useful as a chain transfer agent in the polymerization of vinyl chloride monomer. The 1-chloro-1-iodoethane formed by the instant invention can be made separately in a conventional synthesis apparatus or the compound can be synthesized in situ in the reaction vessel used for polymerization of vinyl chloride.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: July 4, 1995
    Assignee: The Geon Company
    Inventors: Philip I. Bak, Gregory P. Bidinger, Ross J. Cozens, Paul R. Klich
  • Method for preparing 1-chloro-1-iodoethane
    Patent number: 5345018
    Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane. This 1-chloro-1-iodoethane is useful as a chain transfer agent in the polymerization of vinyl chloride monomer in a process which mimics a pseudo-living radical polymerization.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: September 6, 1994
    Assignee: The Geon Company
    Inventors: Philip L. Bak, Gregory P. Bidinger, Ross J. Cozens, Paul R. Klich