Patents by Inventor Marc Thomarat

Marc Thomarat 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 the synthesis of 2,2,2-trifluoroethanol and 1,1,1,3,3,3-hexafluoroisopropanol
    Patent number: 4647706
    Abstract: A process for producing 2,2,2-trifluoroethanol or 1,1,1,3,3,3-hexafluoroisopropanol which comprises hydrogenating a fluoro compound having the formula ##STR1## wherein R.sub.1 is hydrogen or CF.sub.3 and R.sub.2 is hydrogen or a straight- or branched-chain alkyl group, which can also be fluoro-substituted, in the liquid phase in the presence of a palladium-on-activated-carbon catalyst, and if desired a tertiary amine co-catalyst.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: March 3, 1987
    Assignee: Atochem
    Inventors: Bernard Cheminal, Henri Mathais, Marc Thomarat
  • Process for preparing trifluoroacetyl chloride
    Patent number: 4643851
    Abstract: The invention relates to the preparation of trifluoroacetyl chloride by catalytic chlorination of trifluoroacetaldehyde with chlorine. Catalysis is performed in the vapor phase in a fixed bed or a fluidized bed reactor with an activated carbon catalyst. Optionally, hydrochloric acid and/or an inert diluent can be present with the reactant without affecting the results of this process.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: February 17, 1987
    Assignee: Atochem
    Inventors: Bernard Cheminal, Henri Mathais, Marc Thomarat
  • Process for the preparation of pure hydrates of fluoral and of hexafluoroacetone from hemiacetals
    Patent number: 4642386
    Abstract: A process for preparing pure fluoral hydrate or hexafluoroacetone hydrate which comprises reacting a hemiacetal with the formula ##STR1## wherein R is hydrogen or CF.sub.3, with water in a distillation column, removing respectively the methanol or ethanol produced at the head of the column, and recovering at the bottom of the column the pure hydrate so produced.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: February 10, 1987
    Assignee: Atochem
    Inventors: Bernard Cheminal, Henri Mathais, Marc Thomarat