Patents by Inventor Jacques Tourdot

Jacques Tourdot 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).

  • Patent number: 4392975
    Abstract: An activating composition for bleaching textiles with peroxide products, taining an activator of the cyanamide type or derivative thereof, further contains a ternary protective mixture comprising a magnesium silicate precipitated in the finely divided powder state, a sequestering agent of the acetic type, preferably organoacetic, and a sequestering agent of the phosphonic type, preferably organophosphonic. The composition finds its application in activation of bleaching at moderate temperature with protection of textile fibers, of household washing powders at moderate temperature (30.degree. to 60.degree. C.) or any temperature (up to 90.degree. C.).
    Type: Grant
    Filed: September 22, 1981
    Date of Patent: July 12, 1983
    Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes
    Inventors: Jacques Tourdot, Henry Carron
  • Patent number: 4384970
    Abstract: Stabilizing compositions for peroxide products, which contain colloidal magnesium silicate associated with diethylenetriamine pentaacetic acid and diethylenetriaminepentamethylene phosphonic acid. These stabilizing compositions are intended particularly for use in home and industrial laundry powders.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: May 24, 1983
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jacques Tourdot, Henry Carron
  • Patent number: 4297298
    Abstract: The invention relates to the preparation of dilute solutions of aliphatic rboxylic peracids.In a first step, a concentrated solution of aliphatic peracid is prepared from the corresponding acid or anhydride and concentrated hydrogen peroxide in the presence of a strong acid catalyst, preferably the minimum quantity necessary for obtaining equilibrium in the system within 48 hours; and in a second step, the concentrated solution of aliphatic peracid is diluted with a solution containing at least one of the reagents, so as to bring the concentration of aliphatic peracid to the rated concentration of the mixture.The method is applicable inter alia to the preparation of stable dilute solutions of peracetic acid.
    Type: Grant
    Filed: July 22, 1980
    Date of Patent: October 27, 1981
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude Procedes Georges Claude
    Inventors: Francois Crommelynck, Michel Granger, Michel Rio, Jacques Tourdot