Patents by Inventor Alexandre Desseroir

Alexandre Desseroir 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).

  • Method for preparing a superplasticizer
    Patent number: 10144672
    Abstract: The invention chiefly concerns a method for preparing polyalkoxylated polycarboxylates in which the following are caused to react in the presence of water and a catalyst at a temperature of between 120 and 250° C.: at least one polycarboxylic acid obtained by polymerization of at least one unsaturated carboxylic acid; and at least one polyether carrying a free hydroxyl group capable of reacting with a carboxylic function of the said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: December 4, 2018
    Assignee: CHRYSO
    Inventors: Alexandre Desseroir, Philippe Maitrasse
  • Dispersing polymers with improved thermal stability
    Patent number: 9546111
    Abstract: The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: January 17, 2017
    Assignee: CHRYSO
    Inventors: Alexandre Desseroir, Philippe Maitrasse, Marc Lemaire, Florence Popowycz, Pierre Labourt-Ibarre
  • DISPERSING POLYMERS WITH IMPROVED THERMAL STABILITY
    Publication number: 20150148455
    Abstract: The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.
    Type: Application
    Filed: August 9, 2012
    Publication date: May 28, 2015
    Applicant: CHRYSO
    Inventors: Alexandre Desseroir, Philippe Maitrasse, Marc Lemaire, Florence Popowycz, PIERRE Labourt-Ibarre
  • Viscosity-reducing super-plasticising copolymers
    Patent number: 8563631
    Abstract: The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 22, 2013
    Assignees: Lafarge, Chryso
    Inventors: David Rinaldi, Horacio Naranjo, Martin Mosquet, Philippe Maitrasse, Alexandre Desseroir
  • VISCOSITY-REDUCING SUPER-PLASTICISING COPOLYMERS
    Publication number: 20120095134
    Abstract: The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.
    Type: Application
    Filed: March 31, 2010
    Publication date: April 19, 2012
    Applicant: LAFARGE
    Inventors: David Rinaldi, Horacio Naranjo, Martin Mosquet, Philippe Maitrasse, Alexandre Desseroir
  • Method For Preparing A Superplasticizer
    Publication number: 20120077940
    Abstract: The invention chiefly concerns a method for preparing polyalkoxylated polycarboxylates in which the following are caused to react in the presence of water and a catalyst at a temperature of between 120 and 250° C.: at least one polycarboxylic acid obtained by polymerization of at least one unsaturated carboxylic acid; and at least one polyether carrying a free hydroxyl group capable of reacting with a carboxylic function of the said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.
    Type: Application
    Filed: March 30, 2010
    Publication date: March 29, 2012
    Applicant: Chryso
    Inventors: Alexandre Desseroir, Philippe Maitrasse