The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1995
Filed:
May. 19, 1994
Philip I Bak, Amherst, OH (US);
Gregory P Bidinger, Akron, OH (US);
Ross J Cozens, Strongsville, OH (US);
Paul R Klich, Lyndhurst, OH (US);
The Geon Company, Cleveland, OH (US);
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. The in situ process comprises reacting substantially anhydrous hydrogen iodide with an excess of vinyl chloride monomer in the reactor in the presence of an iodine containing catalyst, preferably removing any catalyst and iodine, optionally charging additional vinyl chloride monomer with other polymerization auxiliaries, and initiating the polymerization thereof to form polyvinyl chloride by conventional methods.