Patents by Inventor France Bruno Vuillemin

France Bruno Vuillemin 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 Reducing Residuals Content in Vinyl Aromatic Polymers
    Publication number: 20100113707
    Abstract: The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. Advantage of the present invention is a sharp reduction of the unpolymerized vinyl aromatic monomer in the vinyl aromatic polymer without generating a new residual and without inducing a colored vinyl aromatic polymer. The present invention also relates to said vinyl aromatic polymer having a low residuals content.
    Type: Application
    Filed: July 13, 2007
    Publication date: May 6, 2010
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Thomas-Maurice Roussel, France Bruno Vuillemin, Francois Fajula