Patents by Inventor Jean Golstein

Jean Golstein 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).

  • Process for removing residual vinyl chlorine from the polymer
    Patent number: 4424340
    Abstract: Vinyl chloride and any other comonomers present in a vinyl chloride polymer are removed by heating the polymer to a temperature between its glass transition temperature and 180.degree. C. by directly condensing steam on to the polymer, maintaining the polymer at this temperature sufficiently long to remove the greater part of the monomer or monomers present in the polymer and then cooling the polymer to below its glass transition temperature by evaporating the steam that has condensed on the polymer.
    Type: Grant
    Filed: August 27, 1982
    Date of Patent: January 3, 1984
    Assignee: Solvay & Cie
    Inventors: Jean Golstein, Guillaume Coppens, Jean-Claude Davoine
  • Process for removing residual vinyl chloride from vinyl chloride polymers in aqueous dispersion
    Patent number: 4197399
    Abstract: Process for removing the residual vinyl chloride monomer present after polymerisation in vinyl chloride polymers in the form of an aqueous dispersion which is heated to a temperature at least equal to the glass transition temperature of the polymer and subjected to stripping by an inert fluid while being maintained at a temperature at least equal to the glass transition temperature of the polymer.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: April 8, 1980
    Assignee: Solvay & Cie
    Inventors: Stephane Noel, Jean Golstein, Guillaume Coppens, Jean-Claude Davoine