Patents by Inventor Bernard Millaud

Bernard Millaud 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 obtaining modified polyethylene terephthalate pilling-free fibres originating from the polymer thus modified
    Patent number: 5478909
    Abstract: The present invention relates to a process for obtaining continuously polyethylene terephthalate modified by --SiO-- groups in a proportion of 30014 700 ppm of Si during the direct esterification reaction between terephthalic acid and ethylene glycol, followed by polycondensation in a known manner by introducing methoxyethyl silicate or propyl silicate at a time when the prepolymer has a weight-average molecular mass of between 9,000 and 16,000, a polydispersity index of between 1.5 and 2, and when it is at a temperature of between 260.degree. and 290.degree. C., and at a pressure of between 1.5 and 2.5 bars, the silicate/prepolymer reaction time being at least 5 minutes.The present invention also relates to pilling-free fibers originating from the modified polyethylene terephthalate and to a process for obtaining them.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: December 26, 1995
    Assignee: Rhone-Poulenc Fibres
    Inventors: Denis Jehl, Bernard Millaud, Jean Staron
  • Process for obtaining modified polyethylene terephthalate pilling-free fibres originating from the polymer thus modified
    Patent number: 5300626
    Abstract: The present invention relates to a process for obtaining continuously polyethylene terephthalate modified by --SiO-- groups in a proportion of 300-700 ppm of Si during the direct esterification reaction between terephthalic acid and ethylene glycol, followed by polycondensation in a known manner by introducing methoxyethyl silicate or propyl silicate at a time when the prepolymer has a weight-average molecular mass of between 9,000 and 16,000, a polydispersity index of between 1.5 and 2, and when it is at a temperature of between 260.degree. and 290.degree. C. and at a pressure of between 1.5 and 2.5 bars, the silicate/prepolymer reaction time being at least 5 minutes.The present invention also relates to pilling-free fibres originating from the modified polyethylene terephthalate and to a process for obtaining them.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: April 5, 1994
    Assignee: Rhone-Poulenc Fibres
    Inventors: Denis Jehl, Bernard Millaud, Jean Staron