Patents by Inventor Catherine Huet

Catherine Huet 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).

  • Catalytic composition comprising titanium and phosphorous, its preparation and its use for condensing an epoxide on a carboxylic acid anhydride
    Patent number: 5104842
    Abstract: The object of the invention is a catalytic composition comprising titanium and phosphorus and resulting from the contacting of at least one titanate with at least one quaternary "onium" salt of an acid selected from the group consisting of phosphoric acid and the phosphonic acids of formula R.sup.7 H.sub.2 PO.sub.3 in which R.sup.7 is a hydrocarbon group having 1 to 38 atoms of carbon and the "onium" remainder is a remainder of formula (R.sup.8 R.sup.9 R.sup.10 R.sup.11 M).sup.+ in which M is an element from the group VA of the periodic table of elements, preferably nitrogen or phosphorous, and R.sup.8, R.sup.9, R.sup.10 and R.sup.11, identical or different, represent each an atom of hydrogen or a hydrocarbon group having 1 to 38 atoms of carbon.This catalytic composition is utilizable for producing asters and polyesters from epoxides and carboxylic acid anhydrides.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: April 14, 1992
    Assignees: Institut Francais du Petrol, L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Elf France
    Inventors: Jacques Garapon, Isabelle Muller, Remi Touet, Catherine Huet, Bernard Damin
  • Process for condensing at least one epoxide on at least one cyclic anhydride in the presence of a catalyst consisting of at least one titanium nitrogenous complex
    Patent number: 5030711
    Abstract: The invention relates to a process for condensing at least one epoxide on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium nitrogenous complex of the formula (I) Ti(OR.sup.1).sub.m (OR.sup.2 ).sub.n (OR.sup.2 ).sub.p Lg in which R.sup.1, R.sup.2 and R.sup.3 each independently represents one hydrocarbon group, L represents the remainder of a nitrogenous compound, the sum of m+n+p+q is 4, q is an integer from 1 to 4 and m, n and p are independently each 0 or 1. The process allows for obtaining a perfectly alternating polyester.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: July 9, 1991
    Assignees: Institut Francais du Petrole, L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, ELF France
    Inventors: Valerie Bagrel, Jacques Garapon, Remi Touet, Catherine Huet, Bernard Damin
  • Process for condensing at least one epoxide on at least one cyclic anhydride in the presence of a catalyst consisting of at least one titanium complex
    Patent number: 5019643
    Abstract: A process for condensing at least one aliphatic epoxide having at least 8 atoms of carbon in its molecule on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium complex of general formula (I) Ti(OR).sub.2 (L).sub.2 in which each R group independently represents one hydrocarbon group with 1 to 10 atoms of carbon and each L group represents a ligand of the diketonic beta type or of the keto-ester beta.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: May 28, 1991
    Assignees: Institut Francais du Petrole, L'Air Liquide Societe Anonyme pour L'Etude et L'Exploitation des Procedes Georges Claude, ELF France
    Inventors: Valerie Bagrel, Jacques Garapon, Remi Touet, Catherine Huet, Bernard Damin
  • Process for condensing at least one epoxide on at least one cyclic anhydride in the presence of a titanium-based catalyst
    Patent number: 4997910
    Abstract: The invention relates to a process for condensing at least one epoxide on at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one titanium peroxidic complex of the peroxo type of the A form ##STR1## Said process allows to obtain a perfectly alternate polyester.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: March 5, 1991
    Assignees: Institut Francais du Petrole, L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Elf France
    Inventors: Jacques Garapon, Remi Touet, Catherine Huet, Bernard Damin