Patents by Inventor Xavier Coqueret

Xavier Coqueret 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: 20210024534
    Abstract: A process for manufacturing chromenes intended for the preparation of thermosetting resins, includes transforming an aromatic propargyl ether of general formula (I) into a chromene by homogeneous gold(I) catalysis with the catalyst (acetonitrile)[(2-biphenyl)di-tert-butylphosphine]gold(I) hexafluoroantimonate in an organic solvent under an inert or non-inert atmosphere. Moreover, a process for preparing a material made of thermoset resin, includes successively a) implementation of the above process; polymerization of the reaction product obtained in step a) so as to obtain the material made of thermoset resin; c) recovery of the material made of thermoset resin obtained in step b).
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Robin POUYET, Xavier COQUERET, Brigitte DEFOORT, Bastien RIVIERES
  • Publication number: 20210024533
    Abstract: A process for manufacturing chromenes which are intended for the preparation of thermosetting resins, includes transforming an aromatic propargyl ether of general formula (I) into a chromene by flash vacuum thermolysis, at a temperature of between 300 and 600° C., at a pressure of between 4 and 10 000 Pa. It also concerns a process for preparing a material made of thermoset resin, including successively: a) implementation of the above process; b) polymerization of the reaction product obtained in a) so as to obtain the material made of thermoset resin; c) recovery of the material made of thermoset resin obtained in b).
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Robin POUYET, Xavier COQUERET, Brigitte DEFOORT, Bastien RIVIERES
  • Publication number: 20210024535
    Abstract: A process for producing chromenes intended for the preparation of thermosetting resins, includes converting an aromatic propargyl ether of general formula (I) into a chromene by homogeneous catalysis with copper salts in anisole at a temperature between 100 and 170° C. Moreover, a process for preparing a material made of thermoset resin, includes successively a) carrying out the above process; b) polymerizing the reaction product obtained in a) so as to obtain the material made of thermoset resin; c) recovering the material made of thermoset resin obtained in b).
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Robin POUYET, Xavier COQUERET, Brigitte DEFOORT, Bastien RIVIERES
  • Patent number: 10829581
    Abstract: The invention relates to a curable resin that represents an excellent substitute for phenolic resins and is therefore able to replace phenolic resins in all applications in which they are used. Said resin is characterised in that it comprises: (1) at least one prepolymer resulting from the prepolymerisation of a compound A comprising at least one aromatic or heteroaromatic ring, a first group —O—CH2-C?CH and at least one second group selected from the groups —O—CH2-C?CH2 and —CH2-CH?CH2, said groups being carried by the at least one aromatic or heteroaromatic ring; and (2) a compound B comprising at least two thiol groups (—SH). The invention also relates to a material obtained by curing said curable resin, and in particular to an ablative composite material. The invention further relates to a material obtained by curing said curable resin.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: November 10, 2020
    Assignees: ARIANEGROUP SAS, UNIVERSITE DE REIMS CHAMPAGNE-ARDENNE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Bastien Rivieres, Brigitte Defoort, Cécile Lesamber, Xavier Coqueret
  • Patent number: 10745530
    Abstract: A sizing composition for reinforcing fibres is provided which makes it possible to improve the adhesion of these fibres with respect to an organic matrix that forms, with them, a part made of a composite material and that results from the chain transfer polymerization of a curable resin. The sizing composition includes a polybutadiene prepolymer comprising at least two epoxide functions, a cross-linking agent comprising at least two reactive functions, at least one of which is a thiol function; and a catalyst comprising at least one tertiary amine function.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: August 18, 2020
    Assignees: AIRBUS SAFRAN LAUNCHERS SAS, UNIVERSITE DE REIMS CHAMPAGNE-ARDENNE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Arnaud Martin, Brigitte Defoort, Xavier Coqueret
  • Publication number: 20190040178
    Abstract: The invention relates to a curable resin that represents an excellent substitute for phenolic resins and is therefore able to replace phenolic resins in all applications in which they are used. Said resin is characterised in that it comprises: (1) at least one prepolymer resulting from the prepolymerisation of a compound A comprising at least one aromatic or heteroaromatic ring, a first group —O—CH2-C?CH and at least one second group selected from the groups —O—CH2-C?CH2 and —CH2-CH?CH2, said groups being carried by the at least one aromatic or heteroaromatic ring; and (2) a compound B comprising at least two thiol groups (—SH). The invention also relates to a material obtained by curing said curable resin, and in particular to an ablative composite material. The invention further relates to a material obtained by curing said curable resin.
    Type: Application
    Filed: January 26, 2017
    Publication date: February 7, 2019
    Inventors: Bastien Rivieres, Brigitte Defoort, Cécile Lesamber, Xavier Coqueret
  • Patent number: 10155065
    Abstract: The subject matter of the present invention is a photopolymerizable liquid composition comprising at least one epoxidized polybutadiene prepolymer, at least one cationic photoinitiator, and at least one thioxanthone-derived photosensitizer, which can, for example, be in the form of a liquid dressing. The subject matter of the invention is also a process for obtaining a polymerized film from said photopolymerizable liquid composition, characterized in that said composition is applied to tissues such as the skin, the skin appendages or the mucous membranes so as to form a uniform liquid film, and the film thus obtained is subjected to ultraviolet radiation, preferably ultraviolet-visible radiation having a wavelength of between 380 and 405 nm, preferably between 385 and 395 nm.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 18, 2018
    Assignees: LABORATORIES URGO, UNIVERSITE DE REIMS CHAMPAGNE-ARDENNE, CENTER NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Xavier Coqueret, Sadananda Das, Stéphane Auguste
  • Publication number: 20170014544
    Abstract: The subject matter of the present invention is a photopolymerizable liquid composition comprising at least one epoxidized polybutadiene prepolymer, at least one cationic photoinitiator, and at least one thioxanthone-derived photosensitizer, which can, for example, be in the form of a liquid dressing. The subject matter of the invention is also a process for obtaining a polymerized film from said photopolymerizable liquid composition, characterized in that said composition is applied to tissues such as the skin, the skin appendages or the mucous membranes so as to form a uniform liquid film, and the film thus obtained is subjected to ultraviolet radiation, preferably ultraviolet-visible radiation having a wavelength of between 380 and 405 nm, preferably between 385 and 395 nm.
    Type: Application
    Filed: December 12, 2014
    Publication date: January 19, 2017
    Applicants: Laboratoires Urgo, Universite de Reims Champagne-Ardenne, Centre National de la Recherche Scientifique
    Inventors: Xavier Coqueret, Sadananda Das, Stéphane Auguste
  • Publication number: 20160355645
    Abstract: A sizing composition for reinforcing fibres is provided which makes it possible to improve the adhesion of these fibres with respect to an organic matrix that forms, with them, a part made of a composite material and that results from the chain transfer polymerization of a curable resin. The sizing composition includes a polybutadiene prepolymer comprising at least two epoxide functions, a cross-linking agent comprising at least two reactive functions, at least one of which is a thiol function; and a catalyst comprising at least one tertiary amine function.
    Type: Application
    Filed: February 11, 2015
    Publication date: December 8, 2016
    Inventors: Arnaud Martin, Brigitte Defoort, Xavier Coqueret
  • Patent number: 9051408
    Abstract: A curable composition, and a material obtained by curing the composition, in which the curable composition includes a vinylester polymerisable compound, jointly with a sulphonated polyaromatic thermoplastic polymer, and an N-vinyl lactam, and which is characterised in that it further includes, a first non-vinylester polymerisable compound which includes at least one isocyanurate group bearing at least two (meth)acrylate groups; and a second non-vinylester polymerisable compound which includes at least one carbopolycyclic or heteropolycyclic group bearing at least two (meth)acrylate groups.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: June 9, 2015
    Assignees: Astrium SAS, Universite De Reims Champagne-Ardenne, Centre National De La Recherche Scientifique
    Inventors: Xavier Coqueret, Mickael Krzeminski, Brigitte Defoort
  • Publication number: 20140336341
    Abstract: A curable composition, and a material obtained by curing the composition, in which the curable composition includes a vinylester polymerisable compound, jointly with a sulphonated polyaromatic thermoplastic polymer, and an N-vinyl lactam, and which is characterised in that it further includes, a first non-vinylester polymerisable compound which includes at least one isocyanurate group bearing at least two (meth)acrylate groups; and a second non-vinylester polymerisable compound which includes at least one carbopolycyclic or heteropolycyclic group bearing at least two (meth)acrylate groups.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 13, 2014
    Inventors: Xavier Coqueret, Mickael Krzeminski, Brigitte Defoort
  • Patent number: 8618186
    Abstract: A method increases the toughness of a material obtained by curing a composition that includes at least one vinyl ester monomer. The method includes the incorporation into the composition of a sulfonated polyaromatic thermoplastic polymer, which is achieved by dissolving the vinyl ester monomer and the thermoplastic polymer in a reactive diluent in which they are both soluble. The resulting curable composition includes at least one vinyl ester monomer, and very high toughness materials can be made from it. A curable composition can include at least one vinyl ester monomer, a sulfonated polyaromatic thermoplastic polymer and a N-vinyl lactam. The compositions can be used in the aeronautical, space, railway, nautical, automotive industries, arms and other industries.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: December 31, 2013
    Assignees: Astrium SAS, Universite de Reims Champagne-Ardenne, Centre National de la Recherche Scientifique
    Inventors: Mickael Krzeminski, Brigitte Defoort, Xavier Coqueret
  • Patent number: 8328977
    Abstract: The invention relates to a process for improving the adhesion of carbon fibres with regard to an organic matrix forming a composite material with these fibres, this composite material being obtained by bringing the fibres into contact with a resin which can be cured by chain polymerization and then polymerizing the resin, which process is characterized in that it comprises the grafting, to the surface of the fibres, before they are brought into contact with the resin, of groups capable of acting as chain transfer agents during the polymerization of said resin. Fields of application: aeronautical, aerospatial, railway, ship building and automobile industries but also the armaments industry, the industry of sports and leisure articles, and the like.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: December 11, 2012
    Assignees: Astrium SAS, Universite des Sciences et Technologies de Lille
    Inventors: Brigitte Defoort, Philippe Ponsaud, Xavier Coqueret
  • Publication number: 20120277383
    Abstract: A method increases the toughness of a material obtained by curing a composition that includes at least one vinyl ester monomer. The method includes the incorporation into the composition of a sulfonated polyaromatic thermoplastic polymer, which is achieved by dissolving the vinyl ester monomer and the thermoplastic polymer in a reactive diluent in which they are both soluble. The resulting curable composition includes at least one vinyl ester monomer, and very high toughness materials can be made from it. A curable composition can include at least one vinyl ester monomer, a sulfonated polyaromatic thermoplastic polymer and a N-vinyl lactam. The compositions can be used in the aeronautical, space, railway, nautical, automotive industries, arms and other industries.
    Type: Application
    Filed: October 8, 2010
    Publication date: November 1, 2012
    Applicants: ASTRIUM SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE REIMS CHAMPAGNE-ARDENNE
    Inventors: Mickael Krzeminski, Brigitte Defoort, Xavier Coqueret
  • Publication number: 20120071587
    Abstract: It relates to the use of curable resins containing a prepolymer based on glycidyl (meth)acrylate for making composite materials for use in space and, more particularly to composite materials entering the composition of structures intended to be deployed in space and to be stiffened after deployment.
    Type: Application
    Filed: March 15, 2010
    Publication date: March 22, 2012
    Applicants: ASTRIUM SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE REIMS
    Inventors: Brigitte Defoort, Xavier Coqueret, Marion Mille
  • Patent number: 8025942
    Abstract: The invention relates to the stiffening of inflatably deployable structures, in particular for space use. More specifically, the invention relates to a flexible membrane for inflatably deployable structures, that comprises one layer of a composite and at least one polymer film that is permeable to visible radiation covering one of the faces of this layer, said composite being formed from a fibrous material impregnated with a composition incorporating an epoxide or epoxy/acrylate resin and a photoinitiator, and which is characterized in that the photoinitiator is an iron-arene complex salt of general formula (I): where A is an arene group, while X is a non-nucleophilic anion. Applications: manufacture of devices of the following types: radars, solar panels, reflectors, solar shields, antennas, solar mirrors or sails, intended to equip orbital vehicles or vehicles for space or planetary exploration.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: September 27, 2011
    Assignee: Astrium SAS
    Inventors: Brigitte Defoort, Xavier Coqueret, Dominique Lacour
  • Publication number: 20110207378
    Abstract: A method of using at least one polymerisable resin R1 is disclosed. According to some aspects, the resin R1 is selected from the group consisting of epoxidised polybutadiene resins, epoxidised polyisoprene resins, epoxidised polysiloxane resins, epoxidised triglyceride resins and epoxidised polyether resins. The resin R1 having at the non-polymerised state a total mass loss (TML) value lower than about 10%, a recovered mass loss (RML) value lower than about 10%, and a collected volatile condensable material (CVCM) value lower than about 1%, as determined in accordance with standard ECSS-Q-70-02A of the European Space Agency. The resin R1 also characterized by an epoxide equivalent weight of about 100 to 600 g/mole. The resin is configured for the manufacture of a composite material for use in space, and more specifically, a composite material of a Gossamer structure. Polymerisable resin compositions are also disclosed which are useful in the manufacture of composite materials for use in space.
    Type: Application
    Filed: August 26, 2009
    Publication date: August 25, 2011
    Applicants: ASTRIUM SAS, UNIVRSITE DE REIMS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Brigitte Defoort, Roman Mahias, Dominiqu Lacour, Xavier Coqueret, Marion Mille
  • Publication number: 20090075091
    Abstract: The invention relates to the stiffening of inflatably deployable structures, in particular for space use. More specifically, the invention relates to a flexible membrane for inflatably deployable structures, that comprises one layer of a composite and at least one polymer film that is permeable to visible radiation covering one of the faces of this layer, said composite being formed from a fibrous material impregnated with a composition incorporating an epoxide or epoxy/acrylate resin and a photoinitiator, and which is characterized in that the photoinitiator is an iron-arene complex salt of general formula (I): where A is an arene group, while X is a non-nucleophilic anion. Applications; manufacture of devices of the following types: radars, solar panels, reflectors, solar shields, antennas, solar mirrors or sails, intended to equip orbital vehicles or vehicles for space or planetary exploration.
    Type: Application
    Filed: October 20, 2005
    Publication date: March 19, 2009
    Applicant: ASTRIUM SAS
    Inventors: Brigitte Defoort, Xavier Coqueret, Dominique Lacour
  • Publication number: 20080255332
    Abstract: The invention relates to a process for improving the adhesion of carbon fibres with regard to an organic matrix forming a composite material with these fibres, this composite material being obtained by bringing the fibres into contact with a resin which can be cured by chain polymerization and then polymerizing the resin, which process is characterized in that it comprises the grafting, to the surface of the fibres, before they are brought into contact with the resin, of groups capable of acting as chain transfer agents during the polymerization of said resin. Fields of application: aeronautical, aerospatial, railway, ship building and automobile industries but also the armaments industry, the industry of sports and leisure articles, and the like.
    Type: Application
    Filed: September 15, 2006
    Publication date: October 16, 2008
    Inventors: Brigitte Defoort, Philippe Ponsaud, Xavier Coqueret
  • Publication number: 20080206752
    Abstract: Methods and devices for attaching biomolecules to a solid substrate surface for example to the inner surface of a capillary. In particular, the invention relates to compounds and methods for creating patterned arrays of biomolecules inside fused silica capillaries so that a plurality of bioassays can be conducted simultaneously.
    Type: Application
    Filed: February 10, 2005
    Publication date: August 28, 2008
    Applicants: COMMISSARIAT A L'ENERGIE ATOMIDQUE, AbAg
    Inventors: Maxime Balakirev, Jan Sudor, Francois Chatelain, Xavier Coqueret