Patents by Inventor Nathalie COSTE
Nathalie COSTE 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: 11865865Abstract: A tire comprises a rubber layer comprising from 50% to 100% by mass of a rubber crumb having a ratio of the chloroform extract to the acetone extract of less than 2, the chloroform and acetone extracts being expressed as percentages by mass.Type: GrantFiled: December 13, 2019Date of Patent: January 9, 2024Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Nathalie Coste, Severin Dronet, Vincent Lafaquiere, Claire Rannoux
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Publication number: 20230044213Abstract: A process for manufacturing a masterbatch comprises the following steps: (a) bringing at least one initial polymer comprising at least one carbon-carbon unsaturation into contact with at least one 1,3-dipolar grafting agent bearing at least one nitrile oxide dipole in the presence of at least one organophosphorus additive selected from the group consisting of phosphoric acid triesters, phosphonates, phosphinates, phosphine oxides and the mixtures of these compounds, and (b) recovering the masterbatch obtained in the preceding step. The masterbatch and compositions containing it and also tires comprising such compositions are also disclosed.Type: ApplicationFiled: December 14, 2020Publication date: February 9, 2023Inventors: FRANCOIS JEAN-BAPTISTE-DIT-DOMINIQUE, NATHALIE COSTE, ADELINE JASSELIN
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Publication number: 20220098402Abstract: A polymer composition comprises: a) at least one block thermoplastic elastomer comprising at least one elastomer block and at least one thermoplastic block, the elastomer block(s) predominantly comprising units derived from butadiene, the thermoplastic block(s) consisting of units derived from one or more styrene monomers, b) at least one plasticizer selected from butadiene oligomers with: b1) the molar content of 1,2-polybutadiene units in said plasticizer is within a range of from 70% to 130% of that in the elastomer block of the thermoplastic elastomer, and the molar mass of the plasticizer is greater than 1500 and less than 50 000 g/mol, or else b2) the molar content of 1,2-polybutadiene units in the plasticizer is less than 70%, or greater than 130%, of that in the elastomer block of the thermoplastic elastomer, and the molar mass of the plasticizer is greater than 4000 and less than 50 000 g/mol.Type: ApplicationFiled: December 24, 2019Publication date: March 31, 2022Inventors: MATHILDE ABAD, NATHALIE COSTE, GUILLAUME ESPY, SEVERIN DRONET, KAHINA MAMMERI
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Publication number: 20220064412Abstract: A tire comprises a rubber composition based on at least a rubber crumb, a diene elastomer, a pro-oxidant, a reinforcing filler and a crosslinking system, said rubber crumb representing 30% by mass or more of the composition, and exhibiting a ratio of the chloroform extract to the acetone extract of less than 2, the chloroform and acetone extracts being expressed as percentages by mass.Type: ApplicationFiled: December 13, 2019Publication date: March 3, 2022Inventors: NATHALIE COSTE, SEVERIN DRONET, GUILLAUME HENNEBERT
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Publication number: 20220055406Abstract: A tire comprises a rubber layer comprising from 50% to 100% by mass of a rubber crumb having a ratio of the chloroform extract to the acetone extract of less than 2, the chloroform and acetone extracts being expressed as percentages by mass.Type: ApplicationFiled: December 13, 2019Publication date: February 24, 2022Inventors: NATHALIE COSTE, SEVERIN DRONET, VINCENT LAFAQUIERE, CLAIRE RANNOUX
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Publication number: 20220009284Abstract: A tire comprises sidewalls (2), a crown region (3) provided with a tread (4), and a reinforcing structure (5) extending between the sidewalls (2) and passing via the crown region (3). At least one portion of the region of the tire that is axially inside the reinforcing structure (5) comprises an insert (6) comprising a first elastomer composition serving as a matrix, within which a second elastomer composition originating from recycled tires is distributed substantially uniformly, the proportion of said second elastomer composition being greater than or equal to 40%.Type: ApplicationFiled: July 14, 2017Publication date: January 13, 2022Inventors: JOSE MERINO LOPEZ, NATHALIE COSTE, FREDERIC PIALOT, MATHIEU DELBOS
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Patent number: 11155665Abstract: The present invention relates to a process for preparing a diene elastomer/polylactide copolymer, the weight percentage of polylactide being between 10% and 45% by weight, relative to the weight of the copolymer, characterized in that lactide, an elastomer functionalized by at least one group bearing at least one function capable of initiating a ring-opening polymerization of the lactide and a catalytic system are introduced into an extruder (A).Type: GrantFiled: December 21, 2017Date of Patent: October 26, 2021Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Severin Dronet, Gilles Mioche, Lise Maisonneuve, Nathalie Coste, Julien Cayuela, Leila Bonnaud, Philippe Ghislain Dubois
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Publication number: 20210253801Abstract: An elastomeric mixture comprises at least: one diene elastomer/polylactide copolymer A1 comprising a polylactide block PLLA or PDLA, where appropriate one or more other polylactide blocks which are all PLLA when the first block is PLLA or which are all PDLA when the first block is PDLA, the mass percentage of the polylactide block(s) being between 10% and 50% by weight relative to the weight of the copolymer A1, and a diene elastomer/polylactide copolymer B1 the mass percentage of the polylactide block(s) in said copolymer B1 being between 10% and 50% by weight relative to the weight of the copolymer B1, or a polylactide B2, or a mixture of said copolymer B1 and of said polylactide B2, the names PLLA and PDLA denoting a chain consisting of units of formula (I) —[CH(CH3)—C(O)—O]— (I), of which at least 70% by weight are, respectively, of L and D configuration.Type: ApplicationFiled: June 18, 2019Publication date: August 19, 2021Inventors: NATHALIE COSTE, LISE MAISONNEUVE, GILLES MIOCHE, SEVERIN DRONET, JULIEN CAYUELA, BERTRAND DE BACKER, PHILIPPE GHISLAIN DUBOIS
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Publication number: 20210130526Abstract: The present invention relates to a process for preparing a diene elastomer/polylactide copolymer, the weight percentage of polylactide being between 10% and 45% by weight, relative to the weight of the copolymer, characterized in that lactide, an elastomer functionalized by at least one group bearing at least one function capable of initiating a ring-opening polymerization of the lactide and a catalytic system are introduced into an extruder (A).Type: ApplicationFiled: December 21, 2017Publication date: May 6, 2021Inventors: SEVERIN DRONET, GILLES MIOCHE, LISE MAISONNEUVE, NATHALIE COSTE, JULIEN CAYUELA, LEILA BONNAUD, PHILIPPE GHISLAIN DUBOIS
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Patent number: 10940614Abstract: A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave (1) containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle (20).Type: GrantFiled: December 7, 2016Date of Patent: March 9, 2021Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, ARMINESInventors: Jose Merino Lopez, Frédéric Pialot, Nathalie Coste, Jean-Jacques Letourneau, Jacques Fages, Martial Sauceau
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Publication number: 20200190326Abstract: A process for the preparation of a polydiene/polyamide block thermoplastic elastomer (TPE) copolymer of comb structure is provided. The percentage by weight of polyamide of the copolymer is between 10% and 35% by weight, with respect to the weight of the copolymer. The polyamide and a diene elastomer functionalized by at least one pendant epoxide functional group along the main chain are introduced into an extruder. A polydiene/polyamide block thermoplastic elastomer (TPE) copolymer of comb structure is also provided. The copolymer comprises units bearing a pendant polyamide along the chain which is bonded to the latter via a group resulting from the reaction, with an epoxide functional group, of an amine or acid functional group of the polyamide. A rubber composition comprising the copolymer, and a tire comprising the rubber composition is also provided.Type: ApplicationFiled: December 21, 2017Publication date: June 18, 2020Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Nathalie COSTE, Séverin DRONET
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Publication number: 20190160871Abstract: Tyre (1) comprising sidewalls (2), a crown region (3) provided with a tread (4), a reinforcing structure (5) extending between the sidewalls (2) and passing via the crown region (3), at least one portion of the region of the tyre that is axially inside the reinforcing structure (5) comprising an insert (6) comprising a first elastomer composition serving as a matrix, within which a second elastomer composition originating from recycled tyres is distributed substantially uniformly, the proportion of said second elastomer composition being greater than or equal to 40%.Type: ApplicationFiled: July 14, 2017Publication date: May 30, 2019Inventors: JOSÉ MERINO LOPEZ, NATHALIE COSTE
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Publication number: 20180361627Abstract: A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave (1) containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle (20).Type: ApplicationFiled: December 7, 2016Publication date: December 20, 2018Inventors: JOSE MERINO LOPEZ, FRÉDÉRIC PIALOT, NATHALIE COSTE, JEAN-JACQUES LETOURNEAU, JACQUES FAGES, MARTIAL SAUCEAU
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Publication number: 20170158849Abstract: A rubber composition based on a reinforcing filler, an elastomer matrix that is reactive with respect to the crosslinking system, wherein the elastomer matrix comprises an elastomer A comprising monomer units of a first methacrylic acid ester which represent at least 20 mol % of the monomer units of the elastomer A, and a crosslinking system is provided. The rubber composition makes it possible to improve the wet grip of tires whose tread consists of the rubber composition.Type: ApplicationFiled: June 25, 2015Publication date: June 8, 2017Inventors: Nathalie COSTE, Régis SCHACH, Rachid MATMOUR
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Patent number: 9556330Abstract: A tire tread that comprises a rubber composition based on an elastomer matrix that comprises more than 50% by weight of at least one butyl rubber, on a reinforcing filler and on a plasticizing system that comprises at least one polybutene oil having a glass transition temperature below ?75° C. A tire comprising such a tread has a good compromise between the wet grip performance and the rolling resistance performance.Type: GrantFiled: July 8, 2014Date of Patent: January 31, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Nathalie Coste, Guillaume Lemasson, Regis Schach
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Publication number: 20160168361Abstract: A tire tread that comprises a rubber composition based on an elastomer matrix that comprises more than 50% by weight of at least one butyl rubber, on a reinforcing filler and on a plasticizing system that comprises at least one phosphoric acid ester having a glass transition temperature below ?75° C. A tire comprising such a tread has both a low rolling resistance and a strong grip on wet ground.Type: ApplicationFiled: July 8, 2014Publication date: June 16, 2016Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Nathalie COSTE, Guillaume LEMASSON, Regis SCHACH
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Publication number: 20160160013Abstract: A tire tread that comprises a rubber composition based on an elastomer matrix that comprises more than 50% by weight of at least one butyl rubber, on a reinforcing filler and on a plasticizing system that comprises at least one polybutene oil having a glass transition temperature below ?75° C. A tire comprising such a tread has a good compromise between the wet grip performance and the rolling resistance performance.Type: ApplicationFiled: July 8, 2014Publication date: June 9, 2016Applicants: COMPAGNIE GENERALE DES ETABLISHEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Nathalie COSTE, Guillaume LEMASSON, Regis SCHACH