Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1994-05-19
1995-07-04
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570249, C07C 1708
Patent
active
054302080
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.
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Halogenated Hydrocarbons as Chain Transfer Agents in PVC Polymerization, Society of Plastics Engineers, Apr. 25-28, 1977.
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Bak Philip I.
Bidinger Gregory P.
Cozens Ross J.
Klich Paul R.
Dearth Miles B.
Kestler Kimberly J.
Odar Helen
Richter Johann
The Geon Company
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