Patents by Inventor Jean Charles Durand
Jean Charles Durand 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: 20250043108Abstract: The present invention relates to a polymer powder for the manufacture of articles by 3D printing, in particular by sintering, comprising a thermoplastic polymer, antioxidants, and a particular metal oxide, metal hydroxide and/or hydrotalcite, having improved thermal stability, improved recyclability and improved consistency of mechanical properties of the sintered parts. The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.Type: ApplicationFiled: December 22, 2022Publication date: February 6, 2025Applicant: ARKEMA FRANCEInventor: Jean-Charles DURAND
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Publication number: 20240287262Abstract: The present invention relates to a polymer powder for the manufacture of articles by 3D printing, particularly by sintering, comprising a thermoplastic polymer and a particular antioxidant having improved stability and recyclability. The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.Type: ApplicationFiled: June 28, 2022Publication date: August 29, 2024Applicant: ARKEMA FRANCEInventors: Ornella ZOVI, Jean-Charles DURAND
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Patent number: 11767428Abstract: The present invention relates to a reinforced thermoplastic powder composition, comprising: at least one polyamide powder with a d50 of less than 100 ?m, from 5% to 70% by weight of at least one glass fiber: with a l50 within the range from 50 to 200 ?m, with an lmax of less than 450 ?m, with a d50 within the range from 4 to 40 ?m, with a form factor F: l50/d50 of between 5 and 15, and from 0.05% to 5% of a pulverulent flow agent with a d50 of less than 20 ?m; with regard to the total weight of the composition. The present invention relates in particular to the use of said composition in 3D printing processes for manufacturing reinforced three-dimensional objects.Type: GrantFiled: October 4, 2018Date of Patent: September 26, 2023Assignee: Arkema FranceInventors: Jean-Charles Durand, Ornella Zovi, Benoît Brule
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Patent number: 11667797Abstract: The present invention relates to a self-adhesive powder composition comprising: at least one polyamide; at least one ethylene vinyl alcohol copolymer; at least one hydrophobic agent; and optionally at least one filler.Type: GrantFiled: October 24, 2017Date of Patent: June 6, 2023Assignee: ARKEMA FRANCEInventors: Ornella Zovi, Jean-Charles Durand, Jean-Yves Loze, Emilie-A Delattre
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Publication number: 20220372236Abstract: The invention relates to a composition for the layer-by-layer building of a three-dimensional article by sintering of the composition brought about by electromagnetic radiation, the composition comprising a semicrystalline thermoplastic polymer powder and at least one wax, the wax having a dropping point which is greater than the crystallization temperature of the semicrystalline thermoplastic polymer, said composition in addition optionally comprising a flow agent. The invention also relates to a process for the preparation of said composition and also to its use for the layer-by-layer building of a three-dimensional article.Type: ApplicationFiled: October 8, 2020Publication date: November 24, 2022Applicant: Arkema FranceInventors: Alexis MORFIN, Jean-Charles DURAND
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Publication number: 20220185991Abstract: Process for the preparation of flame-retarded parts by powder bed fusion, in which the powder comprises at least one polyamide and at least one flame-retardant agent of cyclic phosphonate ester type.Type: ApplicationFiled: March 17, 2020Publication date: June 16, 2022Applicant: Arkema FranceInventors: Jean-Jacques FLAT, Benoît BRULE, Ornella ZOVI, Jean-Charles DURAND
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Publication number: 20210395567Abstract: A copolyamide-based powder intended for forming a coating on a surface, having an inherent viscosity of greater than or equal to 0.8 (g/100 g)?1, in which the copolyamide has a melting point of less than or equal to 160° C. Also, the use of such a powder for coating a surface, the coating having an inherent viscosity of greater than or equal to 0.8 (g/100 g)?1, and also a process for coating a surface using such a powder.Type: ApplicationFiled: October 23, 2019Publication date: December 23, 2021Applicant: Arkema FranceInventors: Quentin PINEAU, Jean-Yves LOZE, Jean-Charles DURAND, Masako AKAGI
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Publication number: 20210348008Abstract: A powder intended for 3D printing, based on thermoplastic polymer, wherein it contains at least 0.1% by weight of at least one thioether antioxidant relative to the total weight of powder. Also, a process for stabilizing the color of a powder based on polymer in a 3D printing process, in which at least 0.1% by weight of at least one thioether antioxidant is incorporated relative to the total weight of powder.Type: ApplicationFiled: October 11, 2019Publication date: November 11, 2021Applicant: Arkema FranceInventors: Ornella ZOVI, Arnaud LEMAITRE, Jean-Charles DURAND
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Publication number: 20200255660Abstract: The present invention relates to a reinforced thermoplastic powder composition, comprising: at least one polyamide powder with a d50 of less than 100 ?m, from 5% to 70% by weight of at least one glass fiber: with a 150 within the range from 50 to 200 ?m, with an lmax of less than 450 ?m, with a d50 within the range from 4 to 40 ?m, with a form factor F: 150/d50 of between 5 and 15, and from 0.05% to 5% of a pulverulent flow agent with a d50 of less than 20 ?m; with regard to the total weight of the composition. The present invention relates in particular to the use of said composition in 3D printing processes for manufacturing reinforced three-dimensional objects.Type: ApplicationFiled: October 4, 2018Publication date: August 13, 2020Applicant: Arkema FranceInventors: Jean-Charles DURAND, Ornella ZOVI, Benoît BRULE
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Publication number: 20190264037Abstract: The present invention relates to a self-adhesive powder composition comprising: at least one polyamide; at least one ethylene vinyl alcohol copolymer; at least one hydrophobic agent; and optionally at least one filler.Type: ApplicationFiled: October 24, 2017Publication date: August 29, 2019Applicant: Arkema FranceInventors: Ornella ZOVI, Jean-Charles DURAND, Jean-Yves LOZE, Emilie-A DELATTRE
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Patent number: 9550914Abstract: The present invention relates to a coating composition in the form of a loose powder including the following by weight: 50% to 99.99% of polyamide powder, and 0.01% to 0.5% of polypropylene glycol, out of the total weight of the composition. The present invention relates in particular to a coating composition in the form of a powder including the following by weight: 50% to 99.9% of polyamide powder, 0.01% to 10% of at least one pigment and 0.01% to 0.5% of polypropylene glycol, out of the total weight of the composition. The present invention relates in particular to the use of said composition in methods for coating objects, in particular metal, by means of stuccoing.Type: GrantFiled: February 1, 2011Date of Patent: January 24, 2017Assignee: Arkema FranceInventors: Karine Huraux, Jean-Charles Durand
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Patent number: 8329801Abstract: The invention provides a self-adhesive composition in powder form for the coating of metallic substrates, composed of homopolyamide (A) selected from PA11 and PA12, copolyamide (B), calcium carbonate and, optionally, at least one component selected from a pigment or dye, an anti-crater agent or spreading agent, a reductant, an antioxidant, a reinforcing filler, a UV stabilizer, a fluidizing agent and a corrosion inhibitor, said composition being devoid of silane-type adhesion promoter or of an adhesion promoter containing an epoxy, alcohol and/or carboxylic acid function, or derivatives thereof, and having a dry-state modulus and/or a wet-state modulus of greater than or equal to 2200 MPa [Standard NF EN ISO 527].Type: GrantFiled: September 7, 2007Date of Patent: December 11, 2012Assignee: Arkema FranceInventors: Marc Audenaert, Jean-Charles Durand
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Publication number: 20120301736Abstract: The present invention relates to a coating composition in the form of a loose powder including the following by weight: 50% to 99.99% of polyamide powder, and 0.01% to 0.5% of polypropylene glycol, out of the total weight of the composition. The present invention relates in particular to a coating composition in the form of a powder including the following by weight: 50% to 99.9% of polyamide powder, 0.01% to 10% of at least one pigment and 0.01% to 0.5% of polypropylene glycol, out of the total weight of the composition. The present invention relates in particular to the use of said composition in methods for coating objects, in particular metal, by means of stuccoing.Type: ApplicationFiled: February 1, 2011Publication date: November 29, 2012Applicant: Arkema FranceInventors: Karine Huraux, Jean-Charles Durand
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Publication number: 20100113670Abstract: The invention provides a self-adhesive composition in powder form for the coating of metallic substrates, composed of homopolyamide (A) selected from PA11 and PA12, copolyamide (B), calcium carbonate and, optionally, at least one component selected from a pigment or dye, an anti-crater agent or spreading agent, a reductant, an antioxidant, a reinforcing filler, a UV stabilizer, a fluidizing agent and a corrosion inhibitor, said composition being devoid of silane-type adhesion promoter or of an adhesion promoter containing an epoxy, alcohol and/or carboxylic acid function, or derivatives thereof, and having a dry-state modulus and/or a wet-state modulus of greater than or equal to 2200 MPa [Standard NF EN ISO 527].Type: ApplicationFiled: September 7, 2007Publication date: May 6, 2010Applicant: Arkema FranceInventors: Marc Audenaert, Jean-Charles Durand
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Patent number: 5358767Abstract: Textile structure useful as a reinforcement in the manufacture of composite materials is produced using technical yarns. At least some of the yarns are formed from three constituents, namely a substantially straight core, a relief yarn, and an independent binding yarn. The relief yarn is secured to the core by the binding yarn.Type: GrantFiled: October 22, 1990Date of Patent: October 25, 1994Assignee: Brochier S.A.Inventors: Bruno Bompard, Jean Charles Durand, Jean Paul Lamarie