Patents by Inventor Jean-Alex Laffitte

Jean-Alex Laffitte 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).

  • Publication number: 20200347014
    Abstract: The subject of the present invention is a process for producing a sulfonic acid which is sparingly corrosive, or even non-corrosive, with respect to stainless steels, said process comprising at least the steps of adding at least one nitrite to a sulfonic acid, curing, with stirring, with sparging of the mixture and recovering the low-corrosion sulfonic acid obtained. The invention also relates to the low-corrosion sulfonic acid obtained according to the process of the invention, and also to the use thereof as low-corrosion sulfonic acid.
    Type: Application
    Filed: August 30, 2018
    Publication date: November 5, 2020
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON
  • Patent number: 10780433
    Abstract: The invention relates to a composition comprising: at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom, at least one aryl-sulphonic acid; and optionally at least one solvent, of which the proportions are as defined in the description. The invention also relates to the use of composition in a fatty acid esterification method.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: September 22, 2020
    Assignee: Arkema France
    Inventors: Jean-Alex Laffitte, Bernard Monguillon, Kuan Huwa Tan
  • Publication number: 20200199764
    Abstract: The present invention relates to a composition of at least one sulfonic acid in combination with an effective amount of at least one nitrosyl compound, acting as inhibitor of corrosion of metals by said at least one sulfonic acid.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 25, 2020
    Applicant: ARKEMA FRANCE
    Inventors: Lionel RENAUD, Bernard MONGUILLON, Jean-Alex LAFFITTE, Denis SIGURET, Pierre MEKARBANE
  • Publication number: 20200181072
    Abstract: The subject of the present invention is a weakly corrosive and weakly coloured sulfonic acid, with an APHA colour index of less than 20, comprising chlorides and nitrites in a chloride/sulfonic acid molar ratio of between 1 ppm and 200 ppm, and a nitrite/sulfonic acid molar ratio of between 200 ppm and 6000 ppm, limits inclusive.
    Type: Application
    Filed: August 30, 2018
    Publication date: June 11, 2020
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON
  • Publication number: 20200157299
    Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Inventors: Christophe ROGER, Manuel A. GARCIA-LEINER, Jean-Alex LAFFITTE, Julie BOYER, Stephan Moyses, Lawrence H. JUDOVITS
  • Patent number: 10563028
    Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 18, 2020
    Assignee: Arkema Inc.
    Inventors: Christophe Roger, Manuel A. Garcia-Leiner, Jean-Alex Laffitte, Julie Boyer, Stephan Moyses, Lawrence H. Judovits
  • Publication number: 20190374931
    Abstract: The invention relates to a composition comprising; at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom; sulphuric acid; and optionally at least one solvent; of which the proportions are defined in the description. The invention also relates to the use of the composition as a fatty acid esterification catalyst.
    Type: Application
    Filed: November 20, 2017
    Publication date: December 12, 2019
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON, Vijay SRINIVAS
  • Publication number: 20190329229
    Abstract: The invention relates to a composition comprising: at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom, at least one aryl-sulphonic acid; and optionally at least one solvent, of which the proportions are as defined in the description. The invention also relates to the use of composition in a fatty acid esterification method.
    Type: Application
    Filed: November 20, 2017
    Publication date: October 31, 2019
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON, Kuan Huwa TAN
  • Publication number: 20180371192
    Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.
    Type: Application
    Filed: August 30, 2018
    Publication date: December 27, 2018
    Inventors: Christophe Roger, Manuel A. Garcia-Leiner, Jean-Alex Laffitte, Julie Boyer, Stephan Moyses, Lawrence H. Judovits
  • Patent number: 10087295
    Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: October 2, 2018
    Assignee: Arkema Inc.
    Inventors: Christophe Roger, Manuel A. Garcia-Leiner, Jean-Alex Laffitte, Julie Boyer, Stephan Moyses, Lawrence H. Judovits
  • Publication number: 20180244615
    Abstract: Provided is a composition that contains a compound a) and at least one chemical entity b) dissolved in compound a). Compound a) has at least one sulfoxide functional group and/or one sulfone functional group, and at least one amide functional group. The composition is useful for a variety of applications, including manufacturing a film, a coating on a support, a hollow fiber, an artificial leather, a polymeric fiber, a membrane, a separator or an electrode for batteries, an electronic circuit or a sheath for the protection of electric cables.
    Type: Application
    Filed: September 15, 2016
    Publication date: August 30, 2018
    Applicant: ARKAMA FRANCE
    Inventors: Paul Guillaume SCHMITT, Jean-Alex Laffitte
  • Patent number: 9994544
    Abstract: The present invention concerns a method for preparing 1,3,5-trioxane by trimerization of formaldehyde in the presence of methanesulfonic acid. The invention also concerns the use of at least one catalyst comprising methanesulfonic acid for the trimerization of formaldehyde into 1,3,5-trioxane.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 12, 2018
    Assignee: Arkema France
    Inventors: Bernard Monguillon, Jean-Alex Laffitte
  • Publication number: 20180093305
    Abstract: The present invention concerns the use of at least one alkane sulfonic acid of formula R—SO3H, in which R represents a linear or branched saturated hydrocarbon chain comprising 1 to 4 carbon atoms, for cleaning solid deposits containing at least one aconitic acid salt. The invention also concerns a method for cleaning solid deposits containing at least one aconitic acid salt, using at least one alkane sulfonic acid.
    Type: Application
    Filed: April 8, 2016
    Publication date: April 5, 2018
    Applicant: ARKEMA FRANCE
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON
  • Publication number: 20170233366
    Abstract: The present invention concerns a method for preparing 1,3,5-trioxane by trimerization of formaldehyde in the presence of methanesulfonic acid. The invention also concerns the use of at least one catalyst comprising methanesulfonic acid for the trimerization of formaldehyde into 1,3,5-trioxane.
    Type: Application
    Filed: July 17, 2015
    Publication date: August 17, 2017
    Applicant: Arkema France
    Inventors: Bernard MONGUILLON, Jean-Alex LAFFITTE
  • Publication number: 20160251289
    Abstract: The use of alkane sulphonic acid for preparing phenolic alcohol. The invention relates to a use of at least one alkane sulphonic acid for preparing phenolic alcohol by decomposing aryl hydroperoxide, and to a method for preparing phenolic alcohol comprising the following successive steps: bringing aryl hydroperoxide into reaction in the presence of at least one alkane sulphonic acid, neutralising the reaction medium, separating the ketone or the aldehyde, separating phenolic alcohol by distillation.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 1, 2016
    Applicant: Arkema France
    Inventors: Jean-Alex LAFFITTE, Bernard MONGUILLON
  • Patent number: 9018425
    Abstract: The present invention relates to the use of at least one sulfonic acid for recovering glycerol resulting from a reaction crude from transesterification of glycerides, in particular of triglycerides of vegetable and/or animal origin. The invention also relates to a process for purifying glycerol obtained as a by-product of triglyceride transesterification during the preparation of fatty acids, fatty esters and/or fatty acid salts, and also to a combined process for preparing, on the one hand, fatty acids, fatty esters and/or fatty acid salts and, on the other hand, glycerol, from triglycerides, using at least one sulfonic acid.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: April 28, 2015
    Assignee: Arkema France
    Inventors: Bernard Monguillon, Jean-Alex Laffitte
  • Publication number: 20140256978
    Abstract: The present invention relates to the use of at least one sulfonic acid for recovering glycerol resulting from a reaction crude from transesterification of glycerides, in particular of triglycerides of vegetable and/or animal origin. The invention also relates to a process for purifying glycerol obtained as a by-product of triglyceride transesterification during the preparation of fatty acids, fatty esters and/or fatty acid salts, and also to a combined process for preparing, on the one hand, fatty acids, fatty esters and/or fatty acid salts and, on the other hand, glycerol, from triglycerides, using at least one sulfonic acid.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Applicant: ARKEMA FRANCE
    Inventors: Bernard MONGUILLON, Jean-Alex LAFFITTE
  • Publication number: 20140088234
    Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.
    Type: Application
    Filed: May 15, 2012
    Publication date: March 27, 2014
    Inventors: Christophe Roger, Manuel A. Garcia-Leiner, Jean-Alex Laffitte, Julie Boyer
  • Patent number: 8574370
    Abstract: The present invention relates to the use of at least one alkane sulphonic acid, with formula R—SO3H, where R represents a saturated, linear or branched hydrocarbon chain, comprising 1 to 4 atoms of carbon for removing rust from all types of surface, in particular from metal surfaces, specifically iron, steel and others. The invention also relates to a method for cleaning rust from all types of surfaces using at least one alkane sulphonic acid.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: November 5, 2013
    Assignee: Arkema France
    Inventors: Jean-Alex Laffitte, Bernard Monguillon
  • Patent number: 8425688
    Abstract: The present invention relates to the acidic cleaning in the beer industry, and more particularly an improved process for acidic cleaning of the various elements and vessels that are used in the preparation of beer and other related fermented beverages, said cleaning being carried out by using a formulation comprising at least one alkane sulphonic acid.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: April 23, 2013
    Assignee: Arkema France
    Inventors: Jean-Alex Laffitte, Bernard Monguillon, Pierre Stachura