Patents by Inventor Reynald Chevalier
Reynald Chevalier 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: 20110137060Abstract: The present invention refers to a process for overcoming the problem of formation of oligomeric-polymeric complexes during preparation of cyclopentadienyl metallocenes comprising ligands bridged by at least three carbon atoms. According to the invention a process is presented comprising the steps of deprotonating a biscyclopentadienyl ligand bridged by a chain having a backbone of at least three carbon atoms by a base and reacting the deprotonated ligand with at least one alkali or alkaline earth metal alkylating agent and a salt of a transition metal belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups of the Periodic Table of the Elements.Type: ApplicationFiled: August 19, 2009Publication date: June 9, 2011Applicant: Basell Polyolefin GmbHInventors: Reynald Chevalier, Ouardia Ghersella
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Patent number: 7951970Abstract: The present invention relates to a process for recycling cyclopentadienyl derivatives of the formulae (I) and (I?), a process for preparing metallocenes of the formula (III) from cyclopentadienyl derivatives of the formulae (I) and (I?) or from bridged biscyclopentadienyl derivatives of the formula (II), in which the cyclopentadienyl derivatives of the formulae (I), (I?) or (II) which are used have been at least partly recovered and purified by means of liquid-solid chromatography, and the use of liquid-solid chromatography for purifying substituted, recovered cyclopentadienyl derivatives of the formulae (I), (I?) or (II).Type: GrantFiled: December 19, 2006Date of Patent: May 31, 2011Assignee: Basell Polyolefine GmbHInventors: Patrik Müller, Robert L. Jones, Reynald Chevalier, Christian Sidot, Valerie Garcia
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Publication number: 20110021344Abstract: A method of preparing supported catalysts useful for olefin polymerization is described. The catalysts comprise a Group 4 metal complex that incorporates a tridentate dianionic ligand. An activator mixture is first made from a boron compound having Lewis acidity and an excess of an alumoxane. The activator mixture is then combined with a support and the Group 4 metal complex to give a supported catalyst. The method provides an active, supported catalyst capable of making high-molecular-weight polyolefins.Type: ApplicationFiled: July 22, 2009Publication date: January 27, 2011Inventors: Sandor Nagy, Linda N. Winslow, Shahram Mihan, Reynald Chevalier, Lenka Lukesova, Ilya E. Nifant'ev, Pavel V. Ivchenko, Karen L. Neal-Hawkins
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Publication number: 20110021727Abstract: Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the tridentate, dianionic Group 4 metal complex. The catalysts are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.Type: ApplicationFiled: July 22, 2009Publication date: January 27, 2011Inventors: Sandor Nagy, Linda N. Winslow, Shahram Mihan, Reynald Chevalier, Lenka Lukesova, Ilya E. Nifant'ev, Pavel V. Ivchenko
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Patent number: 7858718Abstract: Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-aryl-8-anilinoquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the tridentate, dianionic Group 4 metal complex. The catalysts are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.Type: GrantFiled: July 22, 2009Date of Patent: December 28, 2010Assignee: Equistar Chemicals, LPInventors: Sandor Nagy, Linda N. Winslow, Shahram Mihan, Reynald Chevalier, Lenka Lukesova, Ilya E. Nifant'ev, Pavel V. Ivchenko, Michael W. Lynch
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Publication number: 20100311926Abstract: The present invention relates to a process for preparing transition metal compounds, in particular ansa-bisindenyl-metallocenes having nitrogen, phosphor, sulfur or oxygen comprising substituents, the corresponding transition metal compounds themselves and their use in the preparation of catalyst systems and also the use of the catalyst systems in the polymerization and copolymerization of olefins.Type: ApplicationFiled: December 11, 2008Publication date: December 9, 2010Applicant: Basell Polyolefine GmbHInventor: Reynald Chevalier
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Publication number: 20100274035Abstract: The present invention relates to a process for recycling cyclopentadienyl derivatives of the formulae (I) and (I?), a process for preparing metallocenes of the formula (III) from cyclopentadienyl derivatives of the formulae (I) and (I?) or from bridged biscyclopentadienyl derivatives of the formula (II), in which the cyclopentadienyl derivatives of the formulae (I), (I?) or (II) which are used have been at least partly recovered and purified by means of liquid-solid chromatography, and the use of liquid-solid chromatography for purifying substituted, recovered cyclopentadienyl derivatives of the formulae (I), (I?) or (II).Type: ApplicationFiled: December 19, 2006Publication date: October 28, 2010Inventors: Patrik Müller, Robert L. Jones, Reynald Chevalier, Christian Sidot, Valerie Garcia
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Publication number: 20100222601Abstract: A process for preparing cyclopentadiene derivatives having formula (I) Wherein R1, R2, R3, R4, R5 and R6 equal to or different from each other, are hydrogen atoms or hydrocarbon groups comprising the steps of reacting a substituted or unsubstituted indanon with a base and then with a substituted or unsubstituted haloaceton and treating the obtained product with the Lawesson's reagent.Type: ApplicationFiled: November 21, 2007Publication date: September 2, 2010Applicant: Basell Polyolefine GmbHInventors: Ouardia Tahiri, Robert L. Jones, Michael Schiendorfer, Reynald Chevalier
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Publication number: 20100087607Abstract: Specific iron complexes (A), a catalyst system for polymerization of olefins comprising at least one metal complex (A) and/or (A?), a prepolymerized catalyst system, the use of these catalyst systems for the polymerization of olefins, and a process for the preparation of polyolefins by polymerization or copolymerization of olefins in the presence of one of the described catalyst systems.Type: ApplicationFiled: March 1, 2008Publication date: April 8, 2010Applicant: Basell Polyolefine GmbHInventors: Shahram Mihan, Fabiana Fantinel, Reynald Chevalier, Harald Schmitz
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Patent number: 7671223Abstract: The present invention relates to a process for the racemoselective preparation of ansa-metallocene complexes of the formula (I) which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula (III) (LB)yM1(NR3R4)Xx-1??(III) where R1, R1? are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2? are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is an organic radical having from 1 to 40 carbon atoms, R4 is hydrogen or an organic radical having from 1 to 40 carbon atoms, T, T? are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substituted or unsubstituted ring system which has a ring size of from 5 to 12 atoms, where T and T? may contain the heteroatoms Si, Ge, N, P, As, Sb, O, S, Se or TeType: GrantFiled: May 4, 2005Date of Patent: March 2, 2010Assignee: Basell Polyolefine GmbHInventors: Valerie Garcia, Patrik Müller, Christian Sidot, Christian Tellier, Ludovic Delancray, Reynald Chevalier
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Patent number: 7635783Abstract: The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula III, where R1, R1 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is a bulky organic radical which has at least 3 carbon atoms, is bound to the oxygen atom via a nonaromatic carbon or silicon atom and may be substituted by halogen atoms or further organic radicals having from 1 to 20 carbon atoms and may also contain heteroatoms selected from the group consisting of Si, N, P, O and S, T, T? are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substitutedType: GrantFiled: December 15, 2004Date of Patent: December 22, 2009Assignee: Basell Polyolefine GmbHInventors: Reynald Chevalier, Patrik Müller, Christian Sidot, Christian Tellier, Valerie Garcia, Ludovic Delancray
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Publication number: 20080275261Abstract: The present invention relates to a process for the racemoselective preparation of ansa-metallocene complexes of the formula (I) which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula (III) (LB)yM1(NR3R4)x-1 ??(III) where R1, R1? are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2? are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is an organic radical having from 1 to 40 carbon atoms, R4 is hydrogen or an organic radical having from 1 to 40 carbon atoms, T, T? are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substituted or unsubstituted ring system which has a ring size of from 5 to 12 atoms, where T and T? may contain the heteroatoms Si, Ge, N, P, As, Sb, O, S, Se or TeType: ApplicationFiled: May 4, 2005Publication date: November 6, 2008Applicant: Basell Polyolefone GmbHInventors: Valerie Garcia, Patrik Muller, Christian Sidot, Christian Tellier, Ludovic Delancray, Reynald Chevalier
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Publication number: 20070155920Abstract: The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula (II) with a transition metal compound of the formula III, where R1, R1 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R2, R2 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3 is a bulky organic radical which has at least 3 carbon atoms, is bound to the oxygen atom via a nonaromatic carbon or silicon atom and may be substituted by halogen atoms or further organic radicals having from 1 to 20 carbon atoms and may also contain heteroatoms selected from the group consisting of Si, N, P, O and S, T, T? are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms and together with the cyclopentadienyl ring forms at least one further saturated or unsaturated, substitutedType: ApplicationFiled: December 15, 2004Publication date: July 5, 2007Applicant: Basell Polyolefine GmbHInventors: Reynald Chevalier, Patrik Muller, Christian Sidot, Christian Tellier, Valerie Garcia, Ludovic Delancray
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Publication number: 20060270627Abstract: A pharmaceutical composition including a therapeutically effective amount of at least one oligomannoside produced by chemical synthesis which is homologous to a wall oligomannoside of an infectious organism or pathogen, or a derivative thereof, and a pharmaceutically acceptable vehicle.Type: ApplicationFiled: August 1, 2006Publication date: November 30, 2006Applicant: Centre Hospitalier regional universitaire (CHRU)Inventors: Jacques Esnault, Pierre Sinay, Reynald Chevalier, Jean-Frederic Colombel, Jean-Maurice Mallet, Boualem Sendid, Thierry Jouault, Daniel Poulain, Pierre-Andre Trinel
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Patent number: 7109182Abstract: A pharmaceutical composition including a therapeutically effective amount of at least one oligomannoside produced by chemical synthesis which is homologous to a wall oligomannoside of an infectious organism or pathogen, or a derivative thereof, and a pharmaceutically acceptable vehicle.Type: GrantFiled: May 23, 2002Date of Patent: September 19, 2006Assignee: Centre Hospitalier Regional Universitaire (CHRU)Inventors: Jacques Esnault, Pierre Sinay, Reynald Chevalier, Jean-Frédéric Colombel, Jean-Maurice Mallet, Boualem Sendid, Thierry Jouault, Daniel Poulain, Pierre-André Trinel
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Publication number: 20030105060Abstract: A pharmaceutical composition including a therapeutically effective amount of at least one oligomannoside produced by chemical synthesis which is homologous to a wall oligomannoside of an infectious organism or pathogen, or a derivative thereof, and a pharmaceutically acceptable vehicle.Type: ApplicationFiled: May 23, 2002Publication date: June 5, 2003Applicant: Centre Hospitalier Regional Universitaire (CHRU)Inventors: Jacques Esnault, Pierre Sinay, Reynald Chevalier, Jean-Frederic Colombel, Jean-Maurice Mallet, Boualem Sendid, Thierry Jouault, Daniel Poulain, Pierre-Andre Trinel