Patents by Inventor Christophe Detrembleur
Christophe Detrembleur 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: 20240139371Abstract: A medical device comprising one or more polyhydroxyurethane (PHU) and a method of manufacturing thereof.Type: ApplicationFiled: February 25, 2022Publication date: May 2, 2024Inventors: Patrizio LANCELLOTTI, Cécile OURY, Christine JEROME, Christophe DETREMBLEUR, Abdelhafid AQIL, Sofia MELO, Anna PIERRARD
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Publication number: 20240043647Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), water or/and a water source and optionally at least one catalyst (compound D), to a process for preparing said foams and to the thus obtained foams, to a process for recycling the obtained foams and to the thus recycled foams.Type: ApplicationFiled: August 31, 2023Publication date: February 8, 2024Applicant: Université de LiègeInventors: Christophe DETREMBLEUR, Bruno GRIGNARD, Maxime BOURGUIGNON
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Publication number: 20230416487Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), at least one masked thiol precursor (compound C) and optionally at least one catalyst (compound D), to a process for preparing said foams, to the thus obtained foams and to the recycling of said foams.Type: ApplicationFiled: December 10, 2021Publication date: December 28, 2023Applicant: Université de LiègeInventors: Christophe DETREMBLEUR, Bruno GRIGNARD, Florent MONIE
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Patent number: 11541129Abstract: Disclosed herein are biomaterial implants, medical devices, or bioprostheses wherein a surface or part thereof is coated with a nanoreservoir comprising a hydrophilic polymer or copolymer backbone crosslinked to a second polymer comprising a hydrophilic backbone and one or more reactive moieties, wherein the nanoreservoir further comprises one or more bioactive molecules, therapeutic molecules, or drugs.Type: GrantFiled: December 28, 2017Date of Patent: January 3, 2023Assignee: UNIVERSITÉ DE LIÈGEInventors: Cécile Oury, Christine Jérôme, Christophe Detrembleur, Patrizio Lancellotti
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Publication number: 20220195117Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), at least one multifunctional thiol (compound C) and at least one catalyst (compound D), to a process for preparing said foams, to the thus obtained foams and the recycling of said foams.Type: ApplicationFiled: January 3, 2022Publication date: June 23, 2022Applicant: Universite de LiegeInventors: Christophe Detrembleur, Jean-Michel THOMASSIN, Bruno GRIGNARD, Florent MONIE, Christine JEROME
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Patent number: 11261270Abstract: A polyvinyl alcohol has a number-average molecular weight (Mn) from 4,400 to 440,000, a molecular weight distribution (Mw/Mn) from 1.05 to 1.70, a degree of saponification from 80 to 99.99 mol %, wherein the polyvinyl alcohol contains an end group represented by a formula (I) below, and a molar ratio (X) of the end group based on total monomer units and the number-average molecular weight (Mn) satisfy a formula (1) below. Such a polyvinyl alcohol has a narrow molecular weight distribution and a high number-average molecular weight with hue good. (In the formula, R1 denotes an optionally substituted aromatic group having a carbon number from 6 to 20, and R2 denotes a hydrogen atom, an alkyl group having a carbon number from 1 to 20, or an optionally substituted aromatic group having a carbon number from 6 to 20.) X·Mn/44?0.Type: GrantFiled: July 11, 2018Date of Patent: March 1, 2022Assignees: KURARAY CO., LTD., UNIVERSITE DE LIEGEInventors: Takumi Takayama, Kazuhiko Maekawa, Christophe Detrembleur, Antoine Debuigne, Christine Jerome
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Publication number: 20210087321Abstract: Preparation of a block copolymer comprising a polyethylene block and a block formed of the polymerization of one or more vinyl monomers, at least 50 mol % of which being selected from the list consisting of ethylene, vinyl esters, non-conjugated N-vinyl monomers, acrylonitrile, (meth)acrylates and (meth)acrylamides, at least one of said one or more vinyl monomers not being ethylene, the process comprising: polymerizing ethylene or the one or more vinyl monomers in presence of an organic cobalt complex, thereby forming a macroinitiator; contacting the macroinitiator with either; the one or more vinyl monomers, if ethylene was polymerized in step a, or; ethylene, if the one or more vinyl monomers were polymerized in step a, thereby forming a second polymer block, and thereby forming the block copolymer, wherein forming the polyethylene block is performed under a pressure above 1 bar.Type: ApplicationFiled: December 14, 2018Publication date: March 25, 2021Inventors: Christophe DETREMBLEUR, Jérémy DEMARTEAU, Antoine DEBUIGNE, Anthony KERMAGORET
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Patent number: 10843224Abstract: A solvent-free plasma method for depositing an adherent catechol and/or quinone functionalised layer to an inorganic or organic substrate from a precursor which comprises at least a quinone group; a protected or unprotected catechol group; a molecule substituted by a quinone group and/or a protected or unprotected catechol group; and/or a natural or synthetic derivative of a catechol group and/or a quinone group; wherein the quinone group is a 1,2-benzoquinone group and the catechol group is a 1,-dihydroxybenzene group.Type: GrantFiled: August 24, 2015Date of Patent: November 24, 2020Assignee: LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)Inventors: Christophe Detrembleur, Cecile Vandeweerdt, Christelle Vreuls, Rodolphe Mauchauffe, Maryline Moreno-Couranjou, Nicolas Boscher, Patrick Choquet
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Patent number: 10766978Abstract: A polyvinyl alcohol is produced in a method comprising: a polymerization step comprising polymerizing vinyl ester monomers by controlled radical polymerization in the presence of a radical initiator and an organic cobalt complex to obtain a polymer solution containing a polyvinyl ester; an extraction step comprising extracting a cobalt complex from the polymer solution by contacting an aqueous solution containing a water-soluble ligand with the polymer solution; and a saponification step comprising saponifying the polyvinyl ester after the extraction step to obtain a polyvinyl alcohol. A method for producing a polyvinyl alcohol is thus provided that has a narrow molecular weight distribution and a high number-average molecular weight with good hue and further good solubility in water.Type: GrantFiled: March 30, 2017Date of Patent: September 8, 2020Assignees: KURARAY CO., LTD., UNIVERSITE DE LIEGEInventors: Takumi Takayama, Yusuke Amano, Kazuhiko Maekawa, Christophe Detrembleur, Antoine Debuigne, Christine Jerome
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Publication number: 20200216584Abstract: A polyvinyl alcohol has a number-average molecular weight (Mn) from 4,400 to 440,000, a molecular weight distribution (Mw/Mn) from 1.05 to 1.70, a degree of saponification from 80 to 99.99 mol %, wherein the polyvinyl alcohol contains an end group represented by a formula (I) below, and a molar ratio (X) of the end group based on total monomer units and the number-average molecular weight (Mn) satisfy a formula (1) below. Such a polyvinyl alcohol has a narrow molecular weight distribution and a high number-average molecular weight with hue good. (In the formula, R1 denotes an optionally substituted aromatic group having a carbon number from 6 to 20, and R2 denotes a hydrogen atom, an alkyl group having a carbon number from 1 to 20, or an optionally substituted aromatic group having a carbon number from 6 to 20.) X·Mn/44?0.Type: ApplicationFiled: July 11, 2018Publication date: July 9, 2020Applicants: KURARAY CO., LTD., UNIVERSITE DE LIEGEInventors: Takumi TAKAYAMA, Kazuhiko MAEKAWA, Christophe DETREMBLEUR, Antoine DEBUIGNE, Christine JEROME
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Publication number: 20200085970Abstract: Nanoreservoirs and uses thereof, in particular the use of nanoreservoirs to coat a surface of a medical device, biomaterial or bioprosthetic.Type: ApplicationFiled: December 28, 2017Publication date: March 19, 2020Applicant: Université de LiègeInventors: Cecile OURY, Christine JÈRÔME, Christophe DETREMBLEUR, Patrizio LANCELLOTTI
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Publication number: 20190119414Abstract: A polyvinyl alcohol is produced in a method comprising: a polymerization step comprising polymerizing vinyl ester monomers by controlled radical polymerization in the presence of a radical initiator and an organic cobalt complex to obtain a polymer solution containing a polyvinyl ester; an extraction step comprising extracting a cobalt complex from the polymer solution by contacting an aqueous solution containing a water-soluble ligand with the polymer solution; and a saponification step comprising saponifying the polyvinyl ester after the extraction step to obtain a polyvinyl alcohol. A method for producing a polyvinyl alcohol is thus provided that has a narrow molecular weight distribution and a high number-average molecular weight with good hue and further good solubility in water.Type: ApplicationFiled: March 30, 2017Publication date: April 25, 2019Applicants: KURARAY CO., LTD., UNIVERSITE DE LIEGEInventors: Takumi TAKAYAMA, Yusuke AMANO, Kazuhiko MAEKAWA, Christophe DETREMBLEUR, Antoine DEBUIGNE, Christine JEROME
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Publication number: 20170297055Abstract: The invention provides a solvent-free plasma method for depositing an adherent catechol and/or quinone functionalised layer to an inorganic or organic substrate from a precursor which comprises at least a quinone group; a protected or unprotected catechol group; a molecule substituted by a quinone group and/or a protected or unprotected catechol group; and/or a natural or synthetic derivative of a catechol group and/or a quinone group; wherein the quinone group is a 1,2-benzoquinone group and the catechol group is a 1,2-dihydroxybenzene group.Type: ApplicationFiled: August 24, 2015Publication date: October 19, 2017Inventors: Christophe Detrembleur, Cecile Vandeweerdt, Christelle Vreuls, Rodolphe Mauchauffe, Maryline Moreno-Couranjou, Nicolas Boscher, Patrick Choquet
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Patent number: 8980970Abstract: The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ?130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ?2, in the presence of D) a catalyst containing one or more zinc compounds, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups. The present invention also relates to the binders obtained by the process of the invention.Type: GrantFiled: September 1, 2005Date of Patent: March 17, 2015Assignee: ALLNEX IP S.a.r.L.Inventors: Jan Weikard, Dorota Greszta-Franz, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock, Christophe Detrembleur
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Patent number: 8604097Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting, at temperatures of ?130° C., A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.Type: GrantFiled: January 27, 2011Date of Patent: December 10, 2013Assignee: Bayer MaterialScience AGInventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Publication number: 20130261267Abstract: Process for the preparation of a halogenated polymer comprising a controlled radical polymerization step of at least one monomer containing at least one halogen-carbon bond, performed in the presence of an organo-cobalt complex, said polymerization step being further carried out in non-isotherm conditions.Type: ApplicationFiled: December 6, 2011Publication date: October 3, 2013Applicant: Universite De LiegeInventors: Vincent Bodart, Yasmine Piette, Christophe Detrembleur, Antoine Debuigne, Christine Jerome
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Patent number: 7960446Abstract: A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation; the process includes reacting A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and C) optionally further NCO-reactive compounds, and D) in the presence of one or more compounds containing phenoxide groups, as catalysts. The binders can be used in preparing coatings, coating materials, coating compositions, adhesives, printing inks, casting resins, dental compounds, sizes, photoresists, stereolithography systems, resins for composite materials and sealants.Type: GrantFiled: February 22, 2008Date of Patent: June 14, 2011Assignee: Bayer MaterialScience AGInventors: Christophe Dètrembleur, Jan Weikard, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Publication number: 20110124805Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ?130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.Type: ApplicationFiled: January 27, 2011Publication date: May 26, 2011Applicant: Bayer MaterialScience AGInventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Publication number: 20110076504Abstract: New polyelectrolyte copolymer, composite material, multilayer film and substrate carrying such polyelectrolyte copolymer, composite and multilayer film wherein the polyelectrolyte copolymer comprises a) a first type of identical or different units (A) each comprising one or more dihydroxyphenyl groups such that sidechains are present along the backbone of the polyelectrolyte copolymer which contain at least one dihydroxyphenyl group each; and (b1) a second type of identical or different units (B1) each comprising a cationic moiety, or (b2) a second type of identical or different units (B2) each comprising an anionic moiety.Type: ApplicationFiled: May 16, 2009Publication date: March 31, 2011Inventors: Cécile Van De Weerdt, Christophe Detrembleur, Aurelia Charlot, Robert Jerome, Christelle Vreuls, Germaine Zocchi
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Patent number: 7902315Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ?130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring.Type: GrantFiled: September 1, 2005Date of Patent: March 8, 2011Assignee: Bayer MaterialScience AGInventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock