Patents by Inventor Barbara Ramfel
Barbara Ramfel 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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Patent number: 11760877Abstract: The invention relates to a composition comprising at least one first polyamide, conforming to the formula MXD·10 or MXD·10/Z and having a melting temperature Tf1, and at least one second polyamide. Said at least second polyamide has a melting temperature Tf2 such that Tf1?40° C.?Tf2<Tf1+20° C. The invention likewise relates to an article obtained from such a composition, to a method of shaping such an article, and to the use of such a composition and of such an article.Type: GrantFiled: February 12, 2018Date of Patent: September 19, 2023Assignee: ARKEMA FRANCEInventors: Benoît Brule, Barbara Ramfel
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Publication number: 20190322806Abstract: One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection moulding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields.Type: ApplicationFiled: June 6, 2019Publication date: October 24, 2019Applicant: ARKEMA FRANCEInventors: Benoit BRULE, Philippe BUSSI, Gilles HOCHSTETTER, Guillaume LE, Barbara RAMFEL
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Patent number: 10400097Abstract: The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components A, B and C: A—a polyvinylidene fluoride (PVDF) homopolymer comprising a fraction of ultra high molecular weight chains (UHMCF); B—a vinylidene fluoride (VDF) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with VDF, and C—a VDF homopolymer having a lower viscosity than component A.Type: GrantFiled: July 27, 2016Date of Patent: September 3, 2019Assignee: ARKEMA FRANCEInventors: Anthony Bonnet, Cyrille Mathieu, Alejandra Reyna-Valencia, Barbara Ramfel (Epouse Wiegert), Christophe Degoulet
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Patent number: 10358527Abstract: One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection molding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields.Type: GrantFiled: November 23, 2009Date of Patent: July 23, 2019Assignee: Arkema FranceInventors: Benoit Brule, Philippe Bussi, Gilles Hochstetter, Guillaume Le, Barbara Ramfel
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Publication number: 20180334566Abstract: The invention relates to a composition comprising at least one first polyamide, conforming to the formula MXD.10 or MXD.10/Z and having a melting temperature Tf1, and at least one second polyamide. Said at least second polyamide has a melting temperature Tf2 such that Tf1?40° C.?Tf2<Tf1+20° C. The invention likewise relates to an article obtained from such a composition, to a method of shaping such an article, and to the use of such a composition and of such an article.Type: ApplicationFiled: February 12, 2018Publication date: November 22, 2018Inventors: Benoît Brule, Barbara Ramfel
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Publication number: 20180134886Abstract: The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components A, B and C: A- a polyvinylidene fluoride (PVDF) homopolymer comprising a fraction of ultra high molecular weight chains (UHMCF); B- a vinylidene fluoride (VDF) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with VDF, and C- a VDF homopolymer having a lower viscosity than component A.Type: ApplicationFiled: July 27, 2016Publication date: May 17, 2018Inventors: Anthony BONNET, Cyrille MATHIEU, Alejandra REYNA-VALENCIA, Barbara RAMFEL (EPOUSE WIEGERT), Christophe DEGOULET
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Patent number: 9890283Abstract: The invention relates to a composition comprising at least one first polyamide, conforming to the formula MXD.10 or MXD.10/Z and having a melting temperature Tf1, and at least one second polyamide. Said at least second polyamide has a melting temperature Tf2 such that Tf1?40° C.?Tf2<Tf1+20° C. The invention likewise relates to an article obtained from such a composition, to a method of shaping such an article, and to the use of such a composition and of such an article.Type: GrantFiled: July 1, 2010Date of Patent: February 13, 2018Assignee: Arkema FranceInventors: Benoit Brule, Barbara Ramfel
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Publication number: 20160271912Abstract: The present invention concerns compositions made from fluorinated polymers and the uses of same in order to produce transparent monolayer or multilayer films intended to protect various substrates. The polymer composition consists of at least one polymer made from vinylidene fluoride, at least one acrylic polymer and at least one UV absorber, the mass ratio of said fluorinated polymer being 60 and 90%, the mass ratio of said UV absorber being from 0.5 to 5% and the molecular weight of the latter is greater than 500 g/mol.Type: ApplicationFiled: October 6, 2014Publication date: September 22, 2016Inventors: Stephane BIZET, Anthony BONNET, Samuel DEVISME, Thomas Fine, Barbara RAMFEL
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Publication number: 20160215133Abstract: The invention relates to a method for producing composition, said method involving—mixing a polyvinylidene fluoride with a copolymer of vinylidene fluoride and a comonomer, and with a crosslinking agent; crosslinking the obtained mixture. The invention further relates to the composition obtained by said method as well as the use of the composition for producing various items, such as pipes.Type: ApplicationFiled: September 2, 2014Publication date: July 28, 2016Inventors: Anthony BONNET, Cyrille MATHIEU, Barbara RAMFEL, Alejandra REYNA-VALENCIA
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Publication number: 20160017136Abstract: The invention relates to a composition comprising: a homopolymer of vinylidene fluoride (VDF) and at least one other fluorinated monomer copolymerizable with VDF, the weight proportion of said copolymer in the composition being between 10 to 35%; and a plasticisizer, the weight proportion of said plasticizer in the composition being between 1 to 5%. The invention also relates to a method for producing said composition and the use thereof for producing various items.Type: ApplicationFiled: March 1, 2013Publication date: January 21, 2016Applicant: Arkema FranceInventors: Gilles Hochstetter, Lionel HUGON, Thomas LABOUR, Thierry LANNUZEL, Barbara RAMFEL, Ramin AMIN-SANAYEI
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Patent number: 8765849Abstract: The invention relates to a composition comprising, relative to the total weight of the composition: between 25% and 52% by weight of at least one semi-crystalline or amorphous polyamide, having an amine chain-end content of less than 0.040 meq/g, between 24% and 40% by weight of at least one reinforcer, and between 24% and 35% by weight of at least one metal salt, optionally contained in a polymer, chosen from a metal salt of phosphinic acid, a metal salt of diphosphinic acid, and a mixture thereof. The invention also relates to the process for preparing this composition and its use.Type: GrantFiled: January 27, 2010Date of Patent: July 1, 2014Assignee: Arkema FranceInventors: Philippe Blondel, Eric Gamache, Benjamin Saillard, Barbara Ramfel
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Publication number: 20140044976Abstract: The invention relates to a novel use of a multilayer structure, combining fluorinated polymers and PVC, as protection for use at the rear of a photovoltaic solar panel, said structure having improved durability in outdoor environments, while retaining the other properties associated with a back-sheet, namely good electric insulation, thermal stability in terms of volume and dimensions and good adhesion to the encapsulating material. The invention relates to the use of a multilayer structure as protection at the rear of a solar panel, said structure comprising at least one layer of fluorinated polymer and one layer of PVC.Type: ApplicationFiled: April 27, 2012Publication date: February 13, 2014Applicant: ARKEMA FRANCEInventors: Anthony Bonnet, Samuel Devisme, Barbara Ramfel, Stephane Bizet
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Publication number: 20130319510Abstract: The present invention relates to a composition comprising a fluoropolymer and two white inorganic fillers, the said composition being intended for the manufacture of thin monolayer films which are opaque to visible light and to UV rays and which can be used in particular in the field of photovoltaic cells. This composition consists of at least one fluoropolymer and of two white inorganic fillers, which are zinc oxide and titanium oxide; they are present in a proportion by weight ranging from 5 to 30% and from 3 to 7.5% respectively, The said composition additionally comprises less than 5% by weight of acrylic polymer, with respect to the total weight of the composition.Type: ApplicationFiled: September 30, 2011Publication date: December 5, 2013Applicant: Arkema FranceInventors: Anthony Bonnet, Nicolas Devaux, Barbara Ramfel, Emmanuel Veret, Stephane Bizet, Gregory S. O'Brien
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Patent number: 8309190Abstract: The invention relates to an article formed by a rotational molding process, having at least one layer formed from a high molecular weight polyamide. The high molecular weight polyamide is one having a molecular weight in the range of 20,000 to 35,000 and also having an inherent viscosity of 1.05-1.60 dL/g. Rotomolded articles having a high molecular weight polyamide layer have better low-temperature impact performance compared to articles formed from lower molecular weight polyamides.Type: GrantFiled: February 24, 2010Date of Patent: November 13, 2012Assignee: Arkema Inc.Inventors: John C. Chen, Barbara Ramfel, Bruce Clay, William Todd Rogers
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Publication number: 20120183711Abstract: The invention relates to a composition comprising at least one first polyamide, conforming to the formula MXD.10 or MXD.10/Z and having a melting temperature Tf1, and at least one second polyamide. Said at least second polyamide has a melting temperature Tf2 such that Tf1?40° C.?Tf2<Tf1+20° C. The invention likewise relates to an article obtained from such a composition, to a method of shaping such an article, and to the use of such a composition and of such an article.Type: ApplicationFiled: July 1, 2010Publication date: July 19, 2012Applicant: ARKEMA FRANCEInventors: Benoit Brule, Barbara Ramfel
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Publication number: 20120040115Abstract: The invention relates to a composition comprising, relative to the total weight of the composition: between 25% and 52% by weight of at least one semi-crystalline or amorphous polyamide, having an amine chain-end content of less than 0.040 meq/g, between 24% and 40% by weight of at least one reinforcer, and between 24% and 35% by weight of at least one metal salt, optionally contained in a polymer, chosen from a metal salt of phosphinic acid, a metal salt of diphosphinic acid, and a mixture thereof. The invention also relates to the process for preparing this composition and its use.Type: ApplicationFiled: January 27, 2010Publication date: February 16, 2012Applicant: Arkema FranceInventors: Philippe Blondel, Eric Gamache, Benjamin Saillard, Barbara Ramfel
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Publication number: 20120027971Abstract: The invention relates to an article formed by a rotational molding process, having at least one layer formed from a high molecular weight polyamide. The high molecular weight polyamide is one having a molecular weight in the range of 20,000 to 35,000 and also having an inherent viscosity of 1.05-1.60 dL/g. Rotomolded articles having a high molecular weight polyamide layer have better low-temperature impact performance compared to articles formed from lower molecular weight polyamides.Type: ApplicationFiled: February 24, 2010Publication date: February 2, 2012Applicant: Arkema Inc.Inventors: John C. Chen, Barbara Ramfel, Bruce Clay, William Todd Rogers
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Publication number: 20110288194Abstract: One subject of the present invention is a composition that combines at least one polyamide having at least one MXD entity, MXD denoting meta-xylylenediamine or a mixture of meta-xylylenediamine and of para-xylylenediamine, with a bioresourced reinforcement. The invention also relates to the conversion of these compositions, by injection moulding or extrusion, into objects that have good mechanical properties, said objects corresponding to technical application specifications such as may be found, for example, in the automotive industry, construction, sport and in electrical or electronic fields.Type: ApplicationFiled: November 23, 2009Publication date: November 24, 2011Applicant: Arkema FranceInventors: Benoit Brule, Philippe Bussi, Gilles Hochstetter, Guillaume Le, Barbara Ramfel
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Patent number: 7241817Abstract: The present invention relates to a process for grafting an unsaturated monomer onto a fluoropolymer, having the steps of: a) melt blending the fluoropolymer with the unsaturated monomer; b) forming the blend obtained in a) into films, sheets, granules or powder; c) exposing the products from step b), in the absence of air, to photon (?) or electron (?) irradiation with a dose of between 1 and 15 Mrad; and d) optionally treating the product obtained at c) in order to remove all or part of the unsaturated monomer that has not been grafted onto the fluoropolymer. Structures made with these materials are barriers to many fluids and in particular to petrol and to air-conditioning fluids and may be formed into bottles, tanks, containers, pipes, hoses and vessels of all sorts. They may also be converted into films with which packaging is made.Type: GrantFiled: June 2, 2004Date of Patent: July 10, 2007Assignee: Arkema FranceInventors: Anthony Bonnet, Barbara Ramfel, Fabrice Chopinez, Karine Triballier, Michael Werth, Thierry Pascal
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Publication number: 20050203203Abstract: The present invention relates to a process for grafting an unsaturated monomer onto a fluoropolymer, having the steps of: a) melt blending the fluoropolymer with the unsaturated monomer; b) forming the blend obtained in a) into films, sheets, granules or powder; c) exposing the products from step b), in the absence of air, to photon (y) or electron (?) irradiation with a dose of between 1 and 15 Mrad; and d) optionally treating the product obtained at c) in order to remove all or part of the unsaturated monomer that has not been grafted onto the fluoropolymer. Structures made with these materials are barriers to many fluids and in particular to petrol and to air-conditioning fluids and may be formed into bottles, tanks, containers, pipes, hoses and vessels of all sorts. They may also be converted into films with which packaging is made.Type: ApplicationFiled: June 2, 2004Publication date: September 15, 2005Inventors: Anthony Bonnet, Barbara Ramfel, Fabrice Chopinez, Karine Triballier, Michael Werth, Thierry Pascal