Patents Represented by Attorney D. R. Howard

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  • Continuous method for determining residual vinyl chloride content in a boiling aqueous polymer dispersion
    Patent number: 4243491
    Abstract: An improvement in a process for removing residual vinyl chloride monomer from an aqueous dispersion of a synthetic polymer wherein the dispersion is subjected to boiling conditions while being maintained in a vessel having a vapor space above the liquid level of the dispersion. In the improved process, the content of vinyl chloride monomer in the dispersion is continuously monitored by a boiling point suppression technique.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: January 6, 1981
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, John S. Kowalczyk