Patents by Inventor Robert Thillier

Robert Thillier 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).

  • Method of producing polyesters
    Patent number: 4153781
    Abstract: New method of manufacturing polyesters and copolyesters having a base of aromatic diacids and condensation diols having at least 3 carbon atoms.This method, carried out in the presence of an organic titanium derivative, by transesterification between an alkyl ester of the aromatic diacid and the diol, and then polycondensation, is characterized by the addition, during the polycondensation stage, of 0.001 to 1% by weight of a nonvolatile amine, based on the weight of polymer.The polymers obtained may be transformed into threads, fibers, films or molded objects.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: May 8, 1979
    Assignee: Rhone-Poulenc-Textile
    Inventors: Robert Thillier, Yves Vaginay