Patents by Inventor Stephane Grelier
Stephane Grelier 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).
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Publication number: 20230193560Abstract: A method for obtaining a fibrous preparation for manufacturing a paper having significant water repellency and opacity in the dry or wet state. Fibres are suspended in water; calcium salts are added to the fibres; a source of carbonate salts in the form of an aqueous solution are added and the resulting mixture is stirred for a time sufficient to allow calcium carbonate particles to be precipitated. A solution of fatty acid salts heated to a temperature which corresponds to the micellisation temperature of said fatty acid salts is added and takes into account the critical micellar concentration of the fatty acid salts. The mixture is stirred thus obtained for a time sufficient to allow the fatty acids to be absorbed at the surface of the calcium carbonate particles and to obtain the desired fibrous preparation.Type: ApplicationFiled: March 27, 2021Publication date: June 22, 2023Applicants: PAPETERIE ZUBER RIEDER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUXInventors: Erwan LE GOUE, Véronique COMA, Stéphane GRELIER, Frédérique HAM-PICHAVANT
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Patent number: 11572422Abstract: The present invention concerns new precursors of recyclable cross-linked diene elastomers comprising at least one furanyl group along the chain and comprising chain-end units with furanyl groups, their use in the preparation of said recyclable elastomers and their process of preparation. The invention also concerns new recyclable cross-linked diene elastomers, their preparation process and their uses.Type: GrantFiled: November 16, 2018Date of Patent: February 7, 2023Assignees: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, Centre national de la recherche scientifiqueInventors: Frédéric Peruch, Pierre Berto, Stéphane Grelier
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Patent number: 11499002Abstract: A multi-epoxidized biphenyl compound has the formula (I) below wherein R, R1, R2 and R3 are as defined in the description, as well as mixtures of at least two of the compounds. These multi-epoxidized biphenyl compounds are fully suitable as main constituents of thermosetting epoxy resins, i.e. as polyepoxides precursors. They are beneficial substitutes for bisphenol A diglycidyl ether.Type: GrantFiled: November 7, 2018Date of Patent: November 15, 2022Assignees: ARIANEGROUP SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Etienne Savonnet, Brigitte Defoort, Henri Cramail, Stéphane Grelier, Etienne Grau
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Patent number: 11384195Abstract: A difunctional biphenyl compounds corresponding to formula (I) wherein Alk, Alk? and R are as defined in the description. These compounds are suitable as hardeners for thermosetting resins, especially epoxy resins.Type: GrantFiled: February 7, 2019Date of Patent: July 12, 2022Assignees: ARIANEGROUP SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Etienne Savonnet, Brigitte Defoort, Henri Cramail, Stéphane Grelier, Etienne Grau
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Publication number: 20220213234Abstract: The present invention concerns new precursors of recyclable cross-linked diene elastomers comprising at least one furanyl group along the chain and comprising chain-end units with furanyl groups, their use in the preparation of said recyclable elastomers and their process of preparation. The invention also concerns new recyclable cross-linked diene elastomers, their preparation process and their uses.Type: ApplicationFiled: November 16, 2018Publication date: July 7, 2022Applicants: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, Centre national de la recherche scientifiqueInventors: Frédéric PERUCH, Pierre BERTO, Stéphane GRELIER
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Publication number: 20210403636Abstract: A multi-epoxidized biphenyl compound has the formula (I) below wherein R, R1, R2 and R3 are as defined in the description, as well as mixtures of at least two of the compounds. These multi-epoxidized biphenyl compounds are fully suitable as main constituents of thermosetting epoxy resins, i.e. as polyepoxides precursors. They are beneficial substitutes for bisphenol A diglycidyl ether.Type: ApplicationFiled: November 7, 2018Publication date: December 30, 2021Inventors: Etienne SAVONNET, Brigitte DEFOORT, Henri CRAMAIL, Stéphane GRELIER, Etienne GRAU
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Patent number: 11203681Abstract: Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses.Type: GrantFiled: March 29, 2018Date of Patent: December 21, 2021Assignees: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Frédéric Peruch, Pierre Berto, Stéphane Grelier
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Publication number: 20200399419Abstract: A difunctional biphenyl compounds corresponding to formula (I) wherein Alk, Alk? and R are as defined in the description. These compounds are suitable as hardeners for thermosetting resins, especially epoxy resins.Type: ApplicationFiled: February 7, 2019Publication date: December 24, 2020Inventors: Etienne SAVONNET, Brigitte DEFOORT, Henri CRAMAIL, Stéphane GRELIER, Etienne GRAU
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Patent number: 10696995Abstract: The present invention relates to a method for producing a glycosylated synthon or a monomer. Said method includes at least one step of placing at least one glycan-saccharase in the presence of at least one hydroxylated synthon and at least one saccharose. The invention also relates to a method for producing a glyco(co)polymer, including polymerizing at least two monomers separately obtained from the enzymatic glycosylation method according to the invention, and to a method for producing a glyco(co)polymer, preferably a block glyco(co)polymer, including coupling at least two monomers separately obtained from the enzymatic glycosylation method according to the invention.Type: GrantFiled: March 17, 2016Date of Patent: June 30, 2020Assignees: INSTITUT NATIONAL DE RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNEMENT, INSTITUT NATIONAL DES SCIENCES APPIQUEES DE TOULOUSE (INSAT), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUXInventors: Isabelle Andre, Stephane Grelier, David Guieysse, Alvaro Lafraya, Pierre Monsan, Claire Moulis, Frederic Peruch, Magali Remaud-Simeon, Marlene Vuillemin
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Publication number: 20200109270Abstract: Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses.Type: ApplicationFiled: March 29, 2018Publication date: April 9, 2020Inventors: Frédéric PERUCH, Pierre BERTO, Stéphane GRELIER
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Publication number: 20190032098Abstract: A process is provided for preparing a compound having the formula (I): said process being conducted by: a) the addition of an oxygen source into a solution of a compound of formula (II) in a water-miscible solvent, b) the addition of a laccase in the solution obtained in a); and c) the possible recovering of the compound of formula (I) thus obtained.Type: ApplicationFiled: October 3, 2018Publication date: January 31, 2019Inventors: Stéphane GRELIER, Henri CRAMAIL, Audrey LLEVOT, Stéphane CARLOTTI, Etienne GRAU
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Patent number: 10155969Abstract: The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.Type: GrantFiled: October 5, 2015Date of Patent: December 18, 2018Assignees: UNIVERSITE DE BORDEAUX, INSTITUTE POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)Inventors: Stéphane Grelier, Henri Cramail, Audrey Llevot, Stéphane Carlotti, Etienne Grau
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Publication number: 20180258456Abstract: The present invention relates to a method for producing a glycosylated synthon or a monomer. Said method includes at least one step of placing at least one glycan-saccharase in the presence of at least one hydroxylated synthon and at least one saccharose. The invention also relates to a method for producing a glyco(co)polymer, including polymerizing at least two monomers separately obtained from the enzymatic glycosylation method according to the invention, and to a method for producing a glyco(co)polymer, preferably a block glyco(co)polymer, including coupling at least two monomers separately obtained from the enzymatic glycosylation method according to the invention.Type: ApplicationFiled: March 17, 2016Publication date: September 13, 2018Inventors: Isabelle Andre, Stephane Grelier, David Guieysse, Alvaro Lafraya, Pierre Monsan, Claire Moulis, Frederic Peruch, Magali Remaud-Simeon, Marlene Vuillemin
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Patent number: 10059731Abstract: A method for depolymerization of lignin includes oxidizing non-phenolic lignin by putting into presence, in at least one solvent, non-phenolic lignin, laccase, redox mediator and a source of oxygen, whereby a mixture including oxidized non-phenolic lignin is obtained, and further includes depolymerization of the oxidized non-phenolic lignin thereby obtained, by adding an oxidizer. The non-phenolic lignin is obtained from phenolic lignin by functionalization of phenol functions of the phenolic lignin.Type: GrantFiled: November 26, 2014Date of Patent: August 28, 2018Assignees: Institut Polytechnique de Bordeaux, Université de Bordeaux, Centre national de la recherche scientifiqueInventors: Stéphane Grelier, Georges Koumba Yoya
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Patent number: 10053540Abstract: The present invention concerns the use of a compound having the following formula (I), for the preparation of a polymer. The present invention also concerns the polymers obtained from polymerization of compound of formula (I), and their processes of preparation.Type: GrantFiled: October 10, 2015Date of Patent: August 21, 2018Assignees: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)Inventors: Stéphane Grelier, Henri Cramail, Audrey Llevot, Stéphane Carlotti, Etienne Grau
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Publication number: 20180002453Abstract: The present invention concerns a compound of formula (I): wherein:—n is an integer comprised between 1 and 7;—X1 is in particular a radical of formula —CH2—S—(CH2)k—S—;—A1 is in particular a linear or branched alkylene radical comprising from 2 to 30 carbon atoms, and—X2 is in particular an alkoxy group of formula ORa, wherein Ra is a linear or branched alkyl group comprising from 1 to 10 carbon atoms.Type: ApplicationFiled: December 16, 2015Publication date: January 4, 2018Inventors: Henri CRAMAIL, Jean-Pierre Albert Stéphane GRELIER, Frédérique PICHAVANT, Denilson DA SILVA PEREZ, Carine ALFOS, Suzanne Maud CHEMIN
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Publication number: 20170260329Abstract: The present invention concerns the use of a compound having the following formula (I), for the preparation of a polymer. The present invention also concerns the polymers obtained from polymerization of compound of formula (I), and their processes of preparation.Type: ApplicationFiled: October 5, 2015Publication date: September 14, 2017Applicants: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, Centre national de la recherche scientifique (C.N.R.S)Inventors: Stéphane GRELIER, Henri CRAMAIL, Audrey LLEVOT, Stéphane CARLOTTI, Etienne GRAU
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Publication number: 20170240937Abstract: The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.Type: ApplicationFiled: October 5, 2015Publication date: August 24, 2017Applicants: UNIVERSITÉ DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, Centre national de la recherche scientifique (C.N.R.S)Inventors: Stéphane GRELIER, Henri CRAMAIL, Audrey LLEVOT, Stéphane CARLOTTI, Etienne GRAU
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Publication number: 20170136449Abstract: The present invention relates to a supported anthraquinonic catalyst which may be obtained by radical polymerization of a reaction mixture comprising styrene; at least one initiator generating free radicals; at least one cross-linking agent which is at least difunctional, at least one pore-forming agent; and at least one anthraquinonic styrenic monomer of formula (I) wherein n is an integer varying from 1 to 5.Type: ApplicationFiled: July 2, 2015Publication date: May 18, 2017Inventors: Valentina-Mihaela ROUSSEAU-POPA, Valérie HEROGUEZ, Frédérique PICHAVANT, Christian GARDRAT, Alain CASTELLAN, Stéphane GRELIER
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Publication number: 20160376300Abstract: A method for depolymerization of lignin includes oxidizing non-phenolic lignin by putting into presence, in at least one solvent, non-phenolic lignin, laccase, redox mediator and a source of oxygen, whereby a mixture including oxidized non-phenolic lignin is obtained, and further includes depolymerization of the oxidized non-phenolic lignin thereby obtained, by adding an oxidizer. The non-phenolic lignin is obtained from phenolic lignin by functionalization of phenol functions of the phenolic lignin.Type: ApplicationFiled: November 26, 2014Publication date: December 29, 2016Inventors: Stéphane GRELIER, GEORGES KOUMBA YOYA