Patents by Inventor Pierre Dournel

Pierre Dournel 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: 10647576
    Abstract: A process includes preparing a crude aqueous hydrogen peroxide solution by auto-oxidation of at least one alkylanthraquinone in a working solution that includes at least one organic solvent and the at least one alkylanthraquinone; and washing the crude aqueous hydrogen peroxide solution with a mixture of at least one organic solvent and an organophosphorous chelating agent to create a purified aqueous hydrogen peroxide solution having less than 100 ppb Cr; wherein the organic solvent used for the washing is not part of the working solution and is not recycled into it.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 12, 2020
    Assignee: Solvay SA
    Inventors: Juan-Teva Carlier, Pierre Dournel, Henk Venbrux, Hooghe Lieven
  • Publication number: 20200056103
    Abstract: A process for removing sulfur compounds from a liquid composition immiscible with water, comprising at least partially oxidizing the sulfur compounds by contacting a liquid composition comprising at least one sulfur compound with an aqueous oxidizing solution comprising at least one oxidant in the presence of at least one polyoxometalate and amphiphilic solid particles.
    Type: Application
    Filed: May 8, 2017
    Publication date: February 20, 2020
    Inventors: Wenjuan ZHOU, Armin LIEBENS, Pierre DOURNEL, Andrew WILLSON
  • Publication number: 20180370798
    Abstract: A process includes preparing a crude aqueous hydrogen peroxide solution by auto-oxidation of at least one alkylanthraquinone in a working solution that includes at least one organic solvent and the at least one alkylanthraquinone; and washing the crude aqueous hydrogen peroxide solution with a mixture of at least one organic solvent and an organophosphorous chelating agent to create a purified aqueous hydrogen peroxide solution having less than 100 ppb Cr; wherein the organic solvent used for the washing is not part of the working solution and is not recycled into it.
    Type: Application
    Filed: June 29, 2018
    Publication date: December 27, 2018
    Applicant: Solvay SA
    Inventors: Juan-Teva Carlier, Pierre Dournel, Henk Venbrux, Hooghe Lieven
  • Patent number: 10099924
    Abstract: Process for manufacturing a purified aqueous hydrogen peroxide solution, in which a crude aqueous hydrogen peroxide solution is subjected to a washing operation with at least one organic solvent, and wherein an organophosphorus chelating agent is added to the organic solvent.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: October 16, 2018
    Assignee: Solvay SA
    Inventors: Juan-Teva Carlier, Pierre Dournel, Henk Venbrux, Hooghe Lieven
  • Patent number: 9963539
    Abstract: A composition which comprises 1,1,1,3,3-pentafluorobutane-(HFC-365mfc) and 1,1,3,3-pentafluoropropane (HFC-245fa) in a weight ratio HFC-365mfc/HFC-245fa of from 60:40 to 75:25.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: May 8, 2018
    Assignee: SOLVAY S.A.
    Inventors: Lothar Zipfel, Werner Krücke, Karsten Börner, Pierre Dournel, Dierk-Ingolf Recke
  • Patent number: 9907305
    Abstract: A method for the production of a solution of peracetic acid (PAA) containing at most 23 wt % PAA according to which acetic anhydride optionally containing acetic acid (AA) is added in a controlled manner to a diluted solution of hydrogen peroxide, wherein the diluted solution of hydrogen peroxide (H2O2) has a concentration and is used in an amount such that it if the amount of water required to hydrate all of the added acetic anhydride is subtracted therefrom, it still contains in weight, at least 50% (preferably 54%) of water based on the total amount of water and hydrogen peroxide.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: March 6, 2018
    Assignee: Solvay SA
    Inventors: Philippe Coel, Pierre Dournel, Pierre Miquel
  • Publication number: 20170273302
    Abstract: A method for the production of a solution of peracetic acid (PAA) containing at most 23 wt % PAA according to which acetic anhydride optionally containing acetic acid (AA) is added in a controlled manner to a diluted solution of hydrogen peroxide, wherein the diluted solution of hydrogen peroxide (H2O2 ) has a concentration and is used in an amount such that it if the amount of water required to hydrate all of the added acetic anhydride is subtracted therefrom, it still contains in weight, at least 50% (preferably 54%) of water based on the total amount of water and hydrogen peroxide.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 28, 2017
    Inventors: Philippe COEL, Pierre DOURNEL, Pierre MIQUEL
  • Publication number: 20160251222
    Abstract: Process for manufacturing a purified aqueous hydrogen peroxide solution, in which a crude aqueous hydrogen peroxide solution is subjected to a washing operation with at least one organic solvent, and wherein an organophosphorus chelating agent is added to the organic solvent.
    Type: Application
    Filed: October 2, 2014
    Publication date: September 1, 2016
    Inventors: Juan-Teva CARLIER, Pierre DOURNEL, Henk VENBRUX
  • Publication number: 20150246997
    Abstract: A composition which comprises 1,1,1,3,3-pentafluorobutane-(HFC-365mfc) and 1,1,3,3-pentafluoropropane (HFC-245fa) in a weight ratio HFC-365mfc/HFC-245fa of from 60:40 to 75:25.
    Type: Application
    Filed: May 14, 2015
    Publication date: September 3, 2015
    Inventors: Lothar ZIPFEL, Werner KRÜCKE, Karsten BÖRNER, Pierre DOURNEL, Dierk-Ingolf RECKE
  • Publication number: 20150191379
    Abstract: A process for removal of hydrogen peroxide from an aqueous solution which can be employed for the treatment of aqueous solutions such as industrial waste-water streams from hydrogen production plants, paper bleaching factories and semi-conductor manufacturing plants, wherein said process comprises contacting at a pH above 4, an aqueous solution containing hydrogen peroxide with a fixed bed of an iron oxide for catalytically decomposing the hydrogen peroxide.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 9, 2015
    Inventor: Pierre Dournel
  • Patent number: 8936820
    Abstract: Batch process for the manufacture of oxidized starch by contacting an aqueous medium comprising already oxidized starch with native starch and with at least one oxidizing agent selected from a peroxide compound or from an alkali metal hypochlorite, and by reacting them at a temperature below the gelatinization temperature of the native starch and of the oxidized starch, the reaction being conducted in the presence of a homogeneous manganese-based complex coordination catalyst when the oxidizing agent is a peroxide compound. The resulting oxidized starch can be used as an additive for the paper industry or for the food industry.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: January 20, 2015
    Assignee: Solvay SA
    Inventor: Pierre Dournel
  • Publication number: 20130087075
    Abstract: Process for the manufacture of aerated concrete construction materials comprising the following steps: (a) mixing a composition comprising at least water, a cementitious material, calcium oxide, a compound comprising reactive silicon dioxide, a source of oxygen, and a compound selected from sodium carbonate, sodium bicarbonate and sodium hydroxide; (b) pouring the mixture of step (a) into a mould and allowing the mixture to set, thus forming a stiffened body; (c) removing the stiffened body from the mould; (d) optionally cutting and shaping the stiffened body, and (e) curing the stiffened body.
    Type: Application
    Filed: April 29, 2011
    Publication date: April 11, 2013
    Applicant: SOLVAY SA
    Inventors: Giorgio Massa, Rodney Seccombe, Pierre Dournel
  • Publication number: 20120070554
    Abstract: Batch process for the manufacture of oxidized starch by contacting an aqueous medium comprising already oxidized starch with native starch and with at least one oxidizing agent selected from a peroxide compound or from an alkali metal hypochlorite, and by reacting them at a temperature below the gelatinization temperature of the native starch and of the oxidized starch, the reaction being conducted in the presence of a homogeneous manganese-based complex coordination catalyst when the oxidizing agent is a peroxide compound. The resulting oxidized starch can be used as an additive for the paper industry or for the food industry.
    Type: Application
    Filed: June 2, 2010
    Publication date: March 22, 2012
    Applicant: SOLVAY SA
    Inventor: Pierre Dournel
  • Publication number: 20120061043
    Abstract: The invention relates to a process for the bleaching of paper pulp with one or more peroxide oxidizing agents, in which the pulp is first treated in a pretreatment step with at least one inorganic magnesium derivative combined with at least one carboxylic acid or its salt, except its magnesium salt, or with at least one carboxylic acid at least partially saponified with Mg2+, the carboxylic acid being substituted by at least one electrodonating group or comprising at least one carbon-carbon double bond.
    Type: Application
    Filed: May 28, 2010
    Publication date: March 15, 2012
    Applicant: SOLVAY SA
    Inventor: Pierre Dournel
  • Publication number: 20110067831
    Abstract: Process for the bleaching of paper pulp in which an aqueous suspension of paper pulp is subjected to a bleaching treatment with hydrogen peroxide in the presence of magnesium hydroxide and of at least one poly-?-hydroxyacrylic acid, its salt or their mixture.
    Type: Application
    Filed: May 25, 2009
    Publication date: March 24, 2011
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventor: Pierre Dournel
  • Publication number: 20100163193
    Abstract: A process for the bleaching of mechanical paper pulp with one or more peroxide oxidizing agents, in which the pulp is pretreated in a pretreatment step with one or more chelating agents chosen from aspartic acid and its derivatives, substituted on the nitrogen atom, characterized in that the initial pH of the pretreatment step, just before adding the one or more chelating agents, is above 8.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 1, 2010
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Rodney Seccombe, Pierre Dournel
  • Publication number: 20090286898
    Abstract: A composition which comprises 1,1,1,3,3-pentafluorobutane (HFC-365mfc) and 1,1,1,3,3-pentafluoropropane (HFC-245fa) in a weight ratio HFC-365mfc/HFC-245fa of from 60:40 to 75:25.
    Type: Application
    Filed: March 9, 2009
    Publication date: November 19, 2009
    Applicant: SOLVAY S.A.
    Inventors: Lothar Zipfel, Werner Kruecke, Karsten Boerner, Pierre Dournel, Dierk-Ingolf Recke
  • Publication number: 20090159850
    Abstract: Composition comprising at least one hydrofluoroalkane and at least one fluoropolyether.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 25, 2009
    Applicant: SOLVAY S.A.
    Inventor: Pierre Dournel
  • Patent number: 7517845
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: April 14, 2009
    Assignee: Solvay S.A.
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Publication number: 20090054639
    Abstract: Process for the manufacture of oxidized starch by reacting an aqueous slurry of starch with a peroxide compound, the reaction being carried out in the presence of ozone or by irradiating the slurry with UV light, the amount of peroxide compound used being lower than 30 % by weight calculated on the basis of the weight of dry starch. The oxidized starch can be used as additive for the paper industry or for the food industry.
    Type: Application
    Filed: February 22, 2007
    Publication date: February 26, 2009
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Pierre Dournel, Jean-Pierre Ganhy