Patents by Inventor Martine Slawinski
Martine Slawinski 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: 20140045681Abstract: The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support.Type: ApplicationFiled: August 13, 2013Publication date: February 13, 2014Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventor: Martine Slawinski
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Publication number: 20140008844Abstract: This invention discloses caps and closures produced by injection moulding with a bimodal high density polyethylene (HDPE) resin comprising a low molecular weight, high density polyethylene fraction substantially free of comonomer and a high molecular weight, low density polyethylene fraction, having a molecular weight distribution of at least 3.5, preferably greater than 4.0, prepared in two reactors connected in series in the presence of a metallocene-containing catalyst system, wherein the metallocene comprises a bisindenyl or a bis-tetrahydrogenated-indenyl component.Type: ApplicationFiled: September 9, 2013Publication date: January 9, 2014Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Alain Standaert, Romain Luijkx, Martine Slawinski, Aurelien Vantomme
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Patent number: 8609791Abstract: The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, decreasing the concentration of said first ethylene polymerization catalyst in said mixing vessel, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, progressively replacing said first ethylene polymerization catalyst by said second ethylene polymerization catalyst and said first diluent by said second diluent, increasing the concentration of said second ethylene polymerization catalyst in said mixing vessel, sequentially transferring said first ethylene polymerization catalyst and said second ethylene polymerization catalyst from said mixing vessel to an ethylene polymerization reactor.Type: GrantFiled: December 17, 2010Date of Patent: December 17, 2013Assignee: Total Research & Technology FeluyInventors: Daan Dewachter, Martine Slawinski
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Patent number: 8580895Abstract: This invention discloses caps and closures produced by injection molding with a bimodal high density polyethylene (HDPE) resin comprising a low molecular weight, high density polyethylene fraction substantially free of comonomer and a high molecular weight, low density polyethylene fraction, having a molecular weight distribution of at least 3.5, preferably greater than 4.0, prepared in two reactors connected in series in the presence of a metallocene-containing catalyst system, wherein the metallocene comprises a bisindenyl or a bis-tetrahydrogenated-indenyl component.Type: GrantFiled: July 12, 2010Date of Patent: November 12, 2013Assignee: Total Petrochemicals Research FeluyInventors: Alain Standaert, Romain Luijkx, Martine Slawinski, Aurélien Vantomme
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Publication number: 20130274422Abstract: The present invention discloses the use of polycarbonate to increase the crystallisation rate of polylactides while maintaining its the mechanical properties.Type: ApplicationFiled: October 5, 2011Publication date: October 17, 2013Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Jean-François Carpentier, Sophie Guillaume, Marion Helou, Martine Slawinski, William Guerin
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Patent number: 8552125Abstract: The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support.Type: GrantFiled: December 17, 2010Date of Patent: October 8, 2013Assignee: Total Research & Technology FeluyInventor: Martine Slawinski
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Patent number: 8546496Abstract: The present invention relates to a process for preparing a bimodal polyethylene product in a single loop reactor, comprising polymerizing ethylene monomer and optionally one or more olefin co-monomers in the presence of a single heterogeneous polymerization catalyst consisting of a metallocene-alumoxane catalyst immobilized on a porous support wherein said metallocene comprises only one transition metal. Said polymerization catalyst consists of two physically different fractions of support particles onto which said metallocene-alumoxane catalyst is immobilized.Type: GrantFiled: December 17, 2010Date of Patent: October 1, 2013Assignee: Total Research & Technology FeluyInventor: Martine Slawinski
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Publication number: 20130225772Abstract: A supported catalyst system comprising a coprecipitated silica-and titania-containing support, comprising alumoxane as acatalyst activating agent, and a metallocene, wherein the supported catalyst system has a Ti content of at least 0.1 wt %.Type: ApplicationFiled: August 16, 2011Publication date: August 29, 2013Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Christopher Willocq, Aurélien Vantomme, Martine Slawinski
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Publication number: 20130211018Abstract: The invention covers a supported catalyst system prepared according to a process comprising the following step: i). impregnating a silica-containing catalyst support having a specific surface area of from 150 m2/g to 800 m2/g, preferably 280 m2/g to 600 m2/g, with one or more titanium compounds of the general formula selected from RnTi(OR?)m and (RO)nTi(OR?)m, wherein R and R? are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having a Ti content of at least 0.1 wt % based on the weight of the Ti-impregnated catalyst support wherein the supported catalyst system further comprises an alumoxane and a metallocene.Type: ApplicationFiled: July 1, 2011Publication date: August 15, 2013Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Christopher Willocq, Aurélien Vantomme, Martine Slawinski
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Publication number: 20130144027Abstract: The present invention discloses a method for preparing polycarbonate-urethane) or poly(ester-urethane) without isocyanateType: ApplicationFiled: June 21, 2011Publication date: June 6, 2013Applicants: CENTER NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Sophie Guillaume, Marion Helou, Jean-François Carpentier, Martine Slawinski
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Publication number: 20130144016Abstract: A process for preparing a supported catalyst system comprising the following steps: a. titanating a silica-containing catalyst support having a specific surface area of from 150 m2/g to 800 m2/g, preferably 280 to 600 m2/g, with at least one vapourised titanium compound of the general formula selected from RnTi(OR?)m and (RO)nTi(OR?)m, wherein R and R? are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having at least 0.1 wt % of Ti based on the weight of the titanated silica-containing catalyst support, b. treating the support with a catalyst activating agent, preferably an alumoxane. c. treating the titanated support with at least one metallocene during or after step (b).Type: ApplicationFiled: March 3, 2011Publication date: June 6, 2013Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Christopher Willocq, Martine Slawinski, Aurélien Vantomme
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Patent number: 8445607Abstract: The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 ?m in a serially connected double loop reactor, wherein said polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support, wherein said polymerization catalyst has a median particle diameter of less than 50 ?m; and whereby the ratio of the median particle diameter of the obtained bimodal polyethylene product to the median particle diameter of the applied polymerization catalyst is less than 30.Type: GrantFiled: December 17, 2010Date of Patent: May 21, 2013Assignee: Total Research & Technology FeluyInventor: Martine Slawinski
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Publication number: 20120309910Abstract: The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, thereby providing a first catalyst slurry, transferring said first catalyst slurry from said mixing vessel to an ethylene polymerization loop reactor at a concentration suitable for polymerizing ethylene, increasing the ratio of said diluent to said first ethylene polymerization catalyst in said first catalyst slurry, stopping the supply of said first catalyst slurry to said mixing vessel, stopping the supply of said first catalyst slurry to said ethylene polymerization loop reactor, stopping the supply of ethylene to said ethylene polymerization loop reactor, removing said first catalyst slurry from said ethylene polymerization loop reactor, emptying said mixing vessel, optionally rinsing said mixing vessel with fresh diluent, transfeType: ApplicationFiled: December 17, 2010Publication date: December 6, 2012Applicant: Total Petrochemicals Research FeluyInventors: Daan Dewachter, Martine Slawinski
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Publication number: 20120271011Abstract: The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support.Type: ApplicationFiled: December 17, 2010Publication date: October 25, 2012Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventor: Martine Slawinski
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Publication number: 20120264891Abstract: The present invention relates to a method for producing a catalyst slurry blend suitable for polymerizing ethylene in an ethylene polymerization loop reactor for obtaining an at least trimodal polyethylene product, comprising the steps of: transferring a first ethylene polymerization catalyst at a first mass flow rate to a mixing vessel, simultaneously transferring a second ethylene polymerization catalyst at a second mass flow rate to said mixing vessel, thereby in situ providing a catalyst slurry blend, wherein said second ethylene polymerization catalyst is different from the first ethylene polymerization catalyst, adjusting and monitoring said first and second mass flow rates, thereby obtaining said catalyst slurry blend at a concentration suitable for polymerizing ethylene, and feeding said catalyst slurry blend to an ethylene polymerization double loop reactor producing said at least trimodal polyethylene product.Type: ApplicationFiled: December 17, 2010Publication date: October 18, 2012Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Daan Dewachter, Martine Slawinski
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Publication number: 20120252988Abstract: The present invention relates to a process for preparing a bimodal polyethylene product in a single loop reactor, comprising polymerizing ethylene monomer and optionally one or more olefin co-monomers in the presence of a single heterogeneous polymerization catalyst consisting of a metallocene-alumoxane catalyst immobilized on a porous support wherein said metallocene comprises only one transition metal. Said polymerization catalyst consists of two physically different fractions of support particles onto which said metallocene-alumoxane catalyst is immobilized.Type: ApplicationFiled: December 17, 2010Publication date: October 4, 2012Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventor: Martine Slawinski
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Publication number: 20120252989Abstract: The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, decreasing the concentration of said first ethylene polymerization catalyst in said mixing vessel, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, progressively replacing said first ethylene polymerization catalyst by said second ethylene polymerization catalyst and said first diluent by said second diluent, increasing the concentration of said second ethylene polymerization catalyst in said mixing vessel, sequentially transferring said first ethylene polymerization catalyst and said second ethylene polymerization catalyst from said mixing vessel to an ethylene polymerization reactor.Type: ApplicationFiled: December 17, 2010Publication date: October 4, 2012Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Daan Dewachter, Martine Slawinski
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Publication number: 20120245307Abstract: The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 ?m in a serially connected double loop reactor, wherein said polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support, wherein said polymerization catalyst has a median particle diameter of less than 50 ?m; and whereby the ratio of the median particle diameter of the obtained bimodal polyethylene product to the median particle diameter of the applied polymerization catalyst is less than 30.Type: ApplicationFiled: December 17, 2010Publication date: September 27, 2012Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventor: Martine Slawinski
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Publication number: 20120130027Abstract: This invention discloses caps and closures produced by injection moulding with a bimodal high density polyethylene (HDPE) resin comprising a low molecular weight, high density polyethylene fraction substantially free of comonomer and a high molecular weight, low density polyethylene fraction, having a molecular weight distribution of at least 3.5, preferably greater than 4.0, prepared in two reactors connected in series in the presence of a metallocene-containing catalyst system, wherein the metallocene comprises a bisindenyl or a bis-tetrahydrogenated-indenyl component.Type: ApplicationFiled: July 12, 2010Publication date: May 24, 2012Applicant: Tatal Petrochemicals Research FeluyInventors: Alain Standaert, Romain Luijkx, Martine Slawinski, Aurélien Vantomme
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Patent number: 8153734Abstract: The present invention discloses a process for preparing polyethylene resins in a double loop reactor wherein the catalyst system comprises a bis-tetrahydroindenyl and a bis-indenyl catalyst component deposited on the same support. It also discloses the polyethylene resins obtained by the process and their use to prepare films having a good compromise of haze, processing and mechanical properties.Type: GrantFiled: November 4, 2008Date of Patent: April 10, 2012Assignee: Total Petrochemicals Research FeluyInventors: Jacques Michel, Martine Slawinski, Guy Debras