Patents by Inventor Pierre Kiener
Pierre Kiener 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: 11427653Abstract: A continuous method for producing a diene elastomer is provided. The method comprises a polymerization reaction of a catalytic system with at least one conjugated diene monomer to be polymerized in solution in a solvent. The catalytic system is based on at least a rare earth organic salt and an alkylating agent, in at least two full polymerization reactors in series. A portion of the conjugated diene monomer to be polymerized is introduced into a polymerization reactor subsequent to the first polymerization reactor.Type: GrantFiled: December 4, 2018Date of Patent: August 30, 2022Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Pierre Kiener, Leyla Pehlivan, Jean-Philippe Rasigade, Rokhiyatou Said-Diatta
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Publication number: 20210380728Abstract: A continuous method for producing a diene elastomer is provided. The method comprises a polymerization reaction of a catalytic system with at least one conjugated diene monomer to be polymerized in solution in a solvent. The catalytic system is based on at least a rare earth organic salt and an alkylating agent, in at least two full polymerization reactors in series. A portion of the conjugated diene monomer to be polymerized is introduced into a polymerization reactor subsequent to the first polymerization reactor.Type: ApplicationFiled: December 4, 2018Publication date: December 9, 2021Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Pierre KIENER, Leyla PEHLIVAN, Jean-Philippe RASIGADE, Rokhiyatou SAID-DIATTA
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Patent number: 10822445Abstract: A process for the continuous synthesis of a diene elastomer by n reactors r1 to rn, n ranging from 2 to 15, is provided. The reactor r1 is fed by an input solution comprising a solvent, one or more monomers, an anionic polymerization initiator and a polar agent, one or more of the reactor(s) r2 to rn also being fed by reinjection of a purified solution comprising solvent and/or monomer(s), the purity of the or of each reinjected solution being such that the proportion of the number of dead chains in the output stream from the reactor rn is less than 30%, of the number of living chains initiated in the reactor r1, the temperature of each reactor ranging from 20 to 150° C. and being greater than or equal to the temperature of the reactor which immediately precedes it, the diene elastomer having a polydispersity index of 1.1 to 2.Type: GrantFiled: June 17, 2016Date of Patent: November 3, 2020Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Margarita Dorato, Lionel Flesinski, Pierre Kiener
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Publication number: 20180134830Abstract: A process for the continuous synthesis of a diene elastomer by n reactors r1 to rn, n ranging from 2 to 15, is provided. The reactor r1 is fed by an input solution comprising a solvent, one or more monomers, an anionic polymerization initiator and a polar agent, one or more of the reactor(s) r2 to rn also being fed by reinjection of a purified solution comprising solvent and/or monomer(s), the purity of the or of each reinjected solution being such that the proportion of the number of dead chains in the output stream from the reactor rn is less than 30%, of the number of living chains initiated in the reactor r1, the temperature of each reactor ranging from 20 to 150° C. and being greater than or equal to the temperature of the reactor which immediately precedes it, the diene elastomer having a polydispersity index of 1.1 to 2.Type: ApplicationFiled: June 17, 2016Publication date: May 17, 2018Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Margarita DORATO, Lionel FLESINSKI, Pierre KIENER
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Publication number: 20180016368Abstract: A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously: a) introducing continuously into a polymerisation reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least i. one or more monomers, including at least one conjugated diene monomer, and ii. from 0% to 70% by mass of an organic solvent, calculated relative to the total mass of monomers and of solvent, b) continuously polymerising the monomer(s), c) stirring the polymerisation medium via the continuous movement of at least one stirring rotor about a rotary axle, d) continuously discharging the elastomer paste, e) continuously conveying the discharged elastomer paste to a chopping device and chopping it into particles, f) removing solvent from the particles of the elastomer paste, and g) recovering diene elastomer.Type: ApplicationFiled: September 21, 2017Publication date: January 18, 2018Inventors: Jérôme DUSSILLOLS, Pierre KIENER, Helene PAROLA
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Patent number: 9809661Abstract: A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously: a) introducing continuously into a polymerization reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least i. one or more monomers, including at least one conjugated diene monomer, and ii. from 0% to 70% by mass of an organic solvent, calculated relative to the total mass of monomers and of solvent b) continuously polymerizing the monomer(s), c) stirring the polymerization medium via the continuous movement of at least one stirring rotor about a rotary axle, d) continuously discharging the elastomer paste, e) continuously conveying the discharged elastomer paste to a chopping device and chopping it into particles, f) removing solvent from the particles of the elastomer paste, and g) recovering diene elastomer.Type: GrantFiled: July 1, 2013Date of Patent: November 7, 2017Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Jerome Dussillols, Pierre Kiener, Helene Parola
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Patent number: 9321706Abstract: Process for the recovery of diene or vinylaromatic monomers from a gas stream, including bringing the gas stream into contact, in an extraction column (C1), with an organic extraction solvent, which absorbs the monomer, and stripping or desorption with an inert gas in (C1), by feeding, at the bottom of (C1) below the feeding of the monomers, a stream of inert gas, a liquid stream having the extraction solvent and the monomer recovered at the bottom of (C1) and an exiting gas stream recovered at the top of (C1), then within a second recovery column C2,recovery of the monomer, wherein the monomer is separated from the extraction solvent by distillation fed with the liquid stream recovered at the bottom of (C1), a stream comprising concentrated monomer(s) recovered at the top of (C2) and a liquid stream having the extraction solvent recovered at the bottom of (C2) and then recycled to the top of (C), the monomer or monomers being dienes, vinylaromatic compounds, or isobutene.Type: GrantFiled: April 17, 2012Date of Patent: April 26, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Margarita Dorato, Pierre Kiener
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Patent number: 9090637Abstract: The invention relates to a process for preparing a rare-earth organophosphate in the form of a fluid or not very viscous solution that can be used as is for the preparation of a “preformed” catalyst system intended, in particular, for the cis-1,4 stereospecific polymerization of conjugated dienes.Type: GrantFiled: May 18, 2010Date of Patent: July 28, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Julien Thuilliez, Pierre Kiener, Elodie Guerin
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Patent number: 9056303Abstract: The present invention relates to a process for the continuous preparation of a catalytic system that can be used for the polymerization of at least one conjugated diene monomer, said catalytic system being based on at least: a preforming conjugated diene; an organic phosphoric acid salt of one or more rare-earth metal(s), said salt being in suspension in at least one saturated aliphatic or alicyclic and inert hydrocarbon-based solvent; an alkylating agent comprising an alkylaluminium having the formula AlR3 or HAlR2; and a halogen donor comprising an alkylaluminium halide; characterized in that it comprises successively in one line (L): (i) a reaction between the preforming conjugated diene, with the solution of the salt of rare-earth element(s) and the alkylating agent, with the alkylation reaction being carried out for a characteristic minimum period of at least 5 minutes in an alkylation reactor (30) composed of at least one well-mixed dynamic mixer; (ii) the addition of said halogen donor to the mixturType: GrantFiled: October 16, 2006Date of Patent: June 16, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Helene Parola, Fanny Barbotin, Pierre Kiener, Bernard Anselme, Fabrice Martinet
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Publication number: 20150158960Abstract: A process for the continuous synthesis of diene elastomers with a high degree of conversion, including simultaneously: h) introducing continuously into a polymerisation reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least iii. one or more monomers, including at least one conjugated diene monomer, and iv.Type: ApplicationFiled: July 1, 2013Publication date: June 11, 2015Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Jerome Dussillols, Pierre Kiener, Helene Parola
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Publication number: 20140114111Abstract: The invention relates to a process for the recovery of one or more monomers from a gas stream (1), comprising the following stages: within one and the same first extraction column C1, a) a stage of extraction by bringing the gas stream (1) into contact, in an extraction column (C1), with an organic extraction solvent (2), in which the said extraction solvent (2) absorbs the said monomer or monomers, and b) a stage of stripping or desorption with an inert gas in the extraction column (C1), by feeding, at the bottom of the column (C1) and below the feeding of the gas stream (I) laden with monomers, with a stream of inert gas, preferably molecular nitrogen or a gas stream enriched in molecular nitrogen (12), a liquid stream (3) comprising the extraction solvent and the monomer or monomers being recovered at the bottom of the column (C1) and an exiting gas stream (4) being recovered at the top of the column (C1), then within a second recovery column C2, c) a stage of recovery of the said monomer or monomerType: ApplicationFiled: April 17, 2012Publication date: April 24, 2014Applicant: Compagnie General Des Etablissements MichelinInventors: Margarita Dorato, Pierre Kiener
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Publication number: 20120130055Abstract: The invention relates to a process for preparing a rare-earth organophosphate in the form of a fluid or not very viscous solution that can be used as is for the preparation of a “preformed” catalyst system intended, in particular, for the cis-1,4 stereospecific polymerization of conjugated dienes.Type: ApplicationFiled: May 18, 2010Publication date: May 24, 2012Applicants: Michelin Recherche et Technique S.A., Societe De Technologie MichelinInventors: Julien Thuilliez, Pierre Kiener, Elodie Guerin
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Publication number: 20090182106Abstract: The present invention relates to a process for the continuous preparation of a catalytic system that can be used for the polymerization of at least one conjugated diene monomer, said catalytic system being based on at least: a preforming conjugated diene; an organic phosphoric acid salt of one or more rare-earth metal(s), said salt being in suspension in at least one saturated aliphatic or alicyclic and inert hydrocarbon-based solvent; an alkylating agent comprising an alkylaluminium having the formula AlR3 or HAlR2; and a halogen donor comprising an alkylaluminium halide; characterized in that it comprises successively in one line (L): (i) a reaction between the preforming conjugated diene, with the solution of the salt of rare-earth element(s) and the alkylating agent, with the alkylation reaction being carried out for a characteristic minimum period of at least 5 minutes in an alkylation reactor (30) composed of at least one well-mixed dynamic mixer; (ii) the addition of said halogen donor to the mixturType: ApplicationFiled: October 16, 2006Publication date: July 16, 2009Applicant: MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Helene Parola, Fanny Barbotin, Pierre Kiener, Bernard Anselme, Fabrice Martinet