Patents by Inventor Jean-Michel Favrot
Jean-Michel Favrot 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: 10435485Abstract: A polymer comprises randomly distributed units UA, UB, UC and UD and at least one unit bearing a subunit F according to the respective molar percentages m, n, o, p and f F pendant along the chain of the polymer and bearing an associative group comprising at least one nitrogen atom, R1 and R2, which are identical or different, denoting a hydrogen atom, a methyl radical or a phenyl radical which is unsubstituted or substituted in the ortho, meta or para position by a methyl radical, m?50, n?0, o?0, f>0, 0<0+p?25, m, n, o, p and f ranging from 0 to 100, the respective molar percentages of m, n, o, p and f calculated based on the sum of m+n+o+p+f, which is equal to 100.Type: GrantFiled: July 9, 2015Date of Patent: October 8, 2019Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Etienne Fleury, Julien Thuilliez, Jean-Michel Favrot
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Patent number: 10239971Abstract: A heavy-duty vehicle tire comprising a tread consisting of a crosslinked rubber composition comprising a reinforcing filler of siliceous type and a synthetic polyisoprene modified by grafting with a compound comprising at least one group Q, and at least one group A, which are joined to one another by at least one and preferably one “spacer” group Sp, in which: Q comprises a dipole containing at least one and preferably one nitrogen atom, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or group of atoms forming a bond between Q and A. The heavy-duty vehicle tire according to the invention has a satisfactorily improved rolling resistance/wear resistance compromise.Type: GrantFiled: December 9, 2013Date of Patent: March 26, 2019Assignees: COMPAGNIE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.AInventors: Perrine Vallat, Etienne Fleury, Jose-Carlos Araujo Da Silva, Jean-Michel Favrot, Anne-Frederique Salit, Nicolas Seeboth
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Publication number: 20170174794Abstract: A polymer comprises randomly distributed units UA, UB, UC and UD and at least one unit bearing a subunit F according to the respective molar percentages m, n, o, p and f F pendant along the chain of the polymer and bearing an associative group comprising at least one nitrogen atom, R1 and R2, which are identical or different, denoting a hydrogen atom, a methyl radical or a phenyl radical which is unsubstituted or substituted in the ortho, meta or para position by a methyl radical, m?50, n?0, o?0, f>0, 0<o+p?25, m, n, o, p and f ranging from 0 to 100, the respective molar percentages of m, n, o, p and f calculated based on the sum of m+n+p+f, which is equal to 100.Type: ApplicationFiled: July 9, 2015Publication date: June 22, 2017Inventors: Etienne FLEURY, Julien THUILLIEZ, Jean-Michel FAVROT
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Publication number: 20170158782Abstract: The present invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler, a chemical crosslinking agent, and a modifying agent, optionally already grafted to the diene elastomer, the modifying agent comprising an associative group and a dipole, the diene elastomer before grafting the modifying agent comprising the units UA, UB, UC and UD, randomly distributed according to a respective molar percentage m, n, o and p. R1 and R2, which are identical or different, denoting a hydrogen atom, a methyl radical or a phenyl radical substituted or unsubstituted in the ortho, meta or para position by a methyl radical, m?50 0<o+p?25, n+o>0, m, n, o and p being numbers ranging from 0 to 100.Type: ApplicationFiled: July 9, 2015Publication date: June 8, 2017Inventors: Etienne FLEURY, Julien THUILLIEZ, Jean-Michel FAVROT
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Patent number: 9670291Abstract: The present invention relates to a specific functionalized diene elastomer. This functionalized elastomer exhibits a reduced cold flow without, however, damaging the properties of a reinforced rubber composition in which it is present, in particular the processing properties and the hysteresis properties. This functionalized diene elastomer carries, at the chain end, a silanol functional group or a polysiloxane block having a silanol end and is partially coupled by or star-branched by tin.Type: GrantFiled: October 7, 2010Date of Patent: June 6, 2017Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Jean-Marc Marechal, Stéphanie De Landtsheer, Jean-Michel Favrot
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Patent number: 9624359Abstract: The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.Type: GrantFiled: November 23, 2011Date of Patent: April 18, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Mathilde Abad, Margarita Dorato, Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal, Stéphanie De Landtsheer
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Patent number: 9481754Abstract: The present invention relates to a modified polymer obtained by grafting a compound comprising at least one group Q, and at least one group A bonded together by at least, and preferably, one “spacer” group Sp in which: Q comprises an azo-carbonyl group capable of being grafted onto the polymer chain by an “ene reaction”, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or a group of atoms forming a bond between Q and A.Type: GrantFiled: July 12, 2011Date of Patent: November 1, 2016Assignees: COMPAGNIE GENERALE DES ESTRABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: José Araujo Da Silva, Jean-Michel Favrot, Anne Frédérique Salit, Nicolas Seeboth
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Patent number: 9394380Abstract: The present invention relates to a modified polymer obtained by grafting of a compound comprising at least one group Q and at least one group A, bonded together by at least, and preferably, one “spacer” group Sp in which: Q comprises a dipole containing at least, and preferably, one nitrogen atom, capable of being grafted onto the polymer chain by [1,3]-dipolar cycloaddition, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or a group of atoms forming a bond between Q and A.Type: GrantFiled: July 12, 2011Date of Patent: July 19, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: José Araujo Da Silva, Jean-Michel Favrot, Anne Frédérique Salit, Nicolas Seeboth
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Patent number: 9394434Abstract: The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler, a chemical crosslinker and a modifier selected from compounds comprising at least one group Q, and at least one group A, which are joined to one another by at least one and preferably one spacer group Sp, wherein: Q comprises a dipole containing at least one and preferably one nitrogen atom, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or group of atoms forming a bond between Q and A. This composition has an improved balance between stiffness under moderate deformations/elongation at break and improved hysteresis properties and is therefore especially suited to the manufacture of tires for enhancing the trade off between rolling resistance and resistance to large deformations.Type: GrantFiled: July 12, 2011Date of Patent: July 19, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: José Araujo da Silva, Jean-Michel Favrot, Anne Frédérique Salit, Nicolas Seeboth
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Patent number: 9340626Abstract: The invention relates to a tire comprising at least one rubber composition based on at least one diene elastomer, one reinforcing filler, one chemical crosslinking agent and one modifying agent, chosen from the compounds of following formula (I): where R denotes a unit comprising at least one reactive group, R1 denotes hydrogen, R2 denotes an alkylene radical comprising from 2 to 8 carbon atoms and optionally one or more heteroatoms chosen from S, N, O or Si, A denotes an oxygen or sulphur atom or an ?NH group, preferably an oxygen atom.Type: GrantFiled: March 15, 2011Date of Patent: May 17, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: José Carlos Araujo Da Silva, Jean-Michel Favrot, Rachid Matmour, Anne Frédérique Salit, Nicolas Seeboth
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Publication number: 20150322183Abstract: A heavy-duty vehicle tire comprising a tread consisting of a crosslinked rubber composition comprising a reinforcing filler of siliceous type and a synthetic polyisoprene modified by grafting with a compound comprising at least one group Q, and at least one group A, which are joined to one another by at least one and preferably one “spacer” group Sp, in which: Q comprises a dipole containing at least one and preferably one nitrogen atom, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or group of atoms forming a bond between Q and A. The heavy-duty vehicle tire according to the invention has a satisfactorily improved rolling resistance/wear resistance compromise.Type: ApplicationFiled: December 9, 2013Publication date: November 12, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Perrine VALLAT, Etienne FLEURY, Jose-Carlos ARAUJO DA SILVA, Jean-Michel FAVROT, Anne-Frederique SALIT, Nicolas SEEBOTH
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Patent number: 9175124Abstract: The present invention relates to an elastomer mixture resulting from the modification of a diene elastomer by a coupling agent that introduces, into the elastomer chain, an alkoxysilane group bearing a tertiary or secondary amine functional group. This mixture predominantly comprises the diene elastomer coupled by the alkoxysilane group bearing a tertiary or secondary amine functional group which is bonded to the diene elastomer through the silicon atom. The invention also relates to a reinforced rubber composition, in particular that can be used for the manufacture of tires, which comprises a reinforcing filler and an elastomer matrix comprising at least this elastomer mixture, and to its preparation process. This composition has improved hysteresis and mechanical properties in the vulcanized state, and also improved processing in the uncured state.Type: GrantFiled: April 27, 2009Date of Patent: November 3, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Philippe Chaboche, Jean-Michel Favrot, Nicolas Seeboth, Fanny Barbotin, Stéphanie De Landtsheer
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Patent number: 9109109Abstract: The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.Type: GrantFiled: November 23, 2011Date of Patent: August 18, 2015Assignees: COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Mathilde Abad, Margarita Dorato, Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal, Stéphanie De Landtsheer
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Patent number: 8927643Abstract: The invention relates to a block diene elastomer corresponding to the following formula: where: n and m are each an integer of greater than or equal to 0, such that n+m?1 and n+m?20, each A block is composed of a polybutadiene, each B block is composed of a diene elastomer, the molar content of units resulting from conjugated dienes of which is greater than 15%, the B blocks being identical to one another, X is an organic or inorganic group which can comprise a functional group which interacts with a reinforcing filler, the number-average molecular weight Mn1 of each A block varies from 2 500 to 20 000 g/mol, the number-average molecular weight Mn2 of each B block varies from 80 000 to 350 000 g/mol, and the content of 1,2- linkages in each A block is between 1 and 20%.Type: GrantFiled: November 23, 2011Date of Patent: January 6, 2015Assignees: Compagnie General des Etablissements, Michelin Recherche et Technique S.A.Inventors: Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal
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Publication number: 20140316057Abstract: The present invention relates to a modified polymer obtained by grafting a compound comprising at least one group Q, and at least one group A bonded together by at least, and preferably, one “spacer” group Sp in which: Q comprises an azo-carbonyl group capable of being grafted onto the polymer chain by an “ene reaction”, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or a group of atoms forming a bond between Q and A.Type: ApplicationFiled: July 12, 2011Publication date: October 23, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELINInventors: José Araujo Da Silva, Jean-Michel Favrot, Anne Frédérique Salit, Nicolas Seeboth
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Publication number: 20130303685Abstract: The invention relates to a block diene elastomer corresponding to the following formula: where: n and m are each an integer of greater than or equal to 0, such that n+m?1 and n+m?20, each A block is composed of a polybutadiene, each B block is composed of a diene elastomer, the molar content of units resulting from conjugated dienes of which is greater than 15%, the B blocks being identical to one another, X is an organic or inorganic group which can comprise a functional group which interacts with a reinforcing filler, the number-average molecular weight Mn1 of each A block varies from 2 500 to 20 000 g/mol, the number-average molecular weight Mn2 of each B block varies from 80 000 to 350 000 g/mol, and the content of 1,2-linkages in each A block is between 1 and 20%.Type: ApplicationFiled: November 23, 2011Publication date: November 14, 2013Applicants: Michelin Recherche et Technique S.A., Compagnie Generale Des Etablissements MichelinInventors: Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal
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Publication number: 20130296492Abstract: The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.Type: ApplicationFiled: November 23, 2011Publication date: November 7, 2013Applicants: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Mathilde Abad, Margarita Dorato, Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal, Stéphanie De Landtsheer
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Publication number: 20130289163Abstract: The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.Type: ApplicationFiled: November 23, 2011Publication date: October 31, 2013Applicants: Michelin Recherche Et Technique S.A., Compagnie Generale Des Etablissements MichelinInventors: Mathilde Abad, Margarita Dorato, Jean-Michel Favrot, Nathalie Simon, Jean Marc Marechal, Stéphanie De Landtsheer
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Patent number: 8492479Abstract: A process for preparing a functionalized or unfunctionalized diene block copolymer comprising at least one polyether block of number-average molecular weight approximately from 150 to 5000 g/mol linked to at least one block constituted of a diene elastomer via at least one silicon atom. The process allows a high degree of grafting of the polyether to the polymer chains. Also disclosed is a reinforced rubber composition, especially intended for the manufacture of tires, comprising such a diene block copolymer which is intended to interact with the reinforcing filler. Such a rubber composition has improved hysteresis properties in the vulcanized state, while retaining satisfactory processing properties in the non-vulcanized state.Type: GrantFiled: June 19, 2008Date of Patent: July 23, 2013Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventors: Pierre Robert, Nicolas Seeboth, Jean-Michel Favrot, Philippe Chaboche
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Patent number: 8455584Abstract: A process for preparing, in one step, a diene block copolymer, of which at least one of these blocks is constituted of a polyether, the number-average molecular weight of which is approximately from 100 to 5000 g/mol, and at least one other of these blocks is constituted of a diene elastomer. The process according to the invention allows a high degree of grafting of the polyether to the polymer chains. Also disclosed is a reinforced rubber composition, especially intended for the manufacture of tires, comprising such a block copolymer which is intended to interact with the reinforcing filler. Such a rubber composition has improved hysteresis properties in the vulcanized state, while retaining satisfactory processing properties in the non-vulcanized state.Type: GrantFiled: June 19, 2008Date of Patent: June 4, 2013Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Pierre Robert, Fanny Barbotin, Jean-Michel Favrot, Philippe Chaboche