Patents by Inventor Aurélien Vantomme
Aurélien Vantomme 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: 20170114159Abstract: Processes for preparing a polyethylene in at least one continuously stirred tank reactor are described herein. The process may comprise the step of: polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene, wherein the supported metallocene catalyst comprises a solid support, a co-catalyst and at least one metallocene, wherein the solid support has a surface area within the range of from 100 to 500 m2/g, and has a D50 value within the range of from 4 ?m to 18 ?m, with D50 being defined as the particle size for which fifty percent by weight of the particles has a size lower than the D50; and D50 being measured by laser diffraction analysis on a Malvern type analyzer. Polyethylene obtained by the disclosed process and articles comprising the polyethylene are also described.Type: ApplicationFiled: June 11, 2015Publication date: April 27, 2017Inventors: Aurelien Vantomme, Christopher Willocq, Alexandre Welle, Martine Slawinski
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Publication number: 20170107364Abstract: A process may include providing a polyethylene post consumer resin, providing a virgin polyethylene resin, and blending the polyethylene post consumer resin with the virgin polyethylene resin to produce a composition. The polyethylene post consumer resin may have an ESCR of at most 10 hours, a density ranging from 0.950 to 0.967 g/cm3, and an HLMI of 40 to 70 g/10 min. The virgin polyethylene resin may include fractions A and B, with fraction A having a higher molecular weight and lower density than fraction B. Fraction A may have an HL275 of at least 0.1 g/10 min and of at most 4 g/10 min, and a density of at least 0.920 g/cm3 and of at most 0.942 g/cm. The virgin polyethylene resin may have an HLMI of 5 to 75 g/10 min, and a density ranging from 0.945 to 0.960 g/cm3.Type: ApplicationFiled: July 2, 2015Publication date: April 20, 2017Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Yves TROLEZ, Aurélien VANTOMME, Jurjen MEEUWISSEN
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Patent number: 9610723Abstract: A polyethylene resin having a multimodal molecular weight distribution comprising at least two polyethylene fractions A and B, fraction A being substantially free of comonomer and having a lower weight average molecular weight and a higher density than fraction B, each fraction prepared in different reactors of two reactors connected in series in the presence of a Ziegler-Natta catalyst system, the polyethylene resin having a density of from 0.950 to 0.965 g/cm3 and a melt index MI2 of from 0.5 to 5 g/10 min.Type: GrantFiled: November 3, 2010Date of Patent: April 4, 2017Assignee: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Jean-Marie Boissiere, Aurélien Vantomme, Pierre Belloir, Alain Van Sinoy
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Publication number: 20160376393Abstract: A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm?18° C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films.Type: ApplicationFiled: July 9, 2014Publication date: December 29, 2016Applicant: TOTAL RESEARCH & TECHNOLOGYInventors: Olivier LHOST, Aurélien VANTOMME, Alexandre WELLE
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Patent number: 9475893Abstract: A supported catalyst system may include a titanated silica-containing catalyst support having at least 0.1 wt % of Ti and a specific surface area of from 150 m2/g to 800 m2/g. The Ti may be of a 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 carbons or halogens, wherein n is 0 to 4, wherein m is 0 to 4, and wherein m+n equals 4. The supported catalyst system may include a catalyst activating agent and a metallocene. The supported catalyst system may be obtained by a process including titanating a silica-containing catalyst support with at least one vaporized titanium compound, and treating the titanated silica-containing catalyst support with a catalyst activating agent and a metallocene.Type: GrantFiled: May 11, 2015Date of Patent: October 25, 2016Assignee: Total Research & Technology FeluyInventors: Christopher Willocq, Martine Slawinski, Aurélien Vantomme
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Patent number: 9403920Abstract: A supported catalyst system includes a coprecipitated silica- and titania-containing support, alumoxane, and a metallocene. The supported catalyst system has a Ti content of at least 0.1 wt %.Type: GrantFiled: August 16, 2011Date of Patent: August 2, 2016Assignee: Total Research & Technology FeluyInventors: Christopher Willocq, Aurélien Vantomme, Martine Slawinski
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Publication number: 20160200904Abstract: An injection stretch blow molded article may include a Ziegler-Natta catalyzed polyethylene resin having a multimodal molecular weight distribution and including at least two polyethylene fractions A and B. Fraction A may have a higher molecular weight and a lower density than fraction B. Each fraction may be prepared in different reactors of at least two reactors connected in series. Fraction A may have a melt index HL275 of at least 11 g/10 min and of at most 20 g/10 min, and a density of at least 941 kg/m3 and of at most 946 kg/m3. The polyethylene resin may have a melt index MI2 of at least 1.5 g/10 min and of at most 3.0 g/10 min, and a density of at least 950 kg/m3 and of at most 965 kg/m3.Type: ApplicationFiled: August 12, 2014Publication date: July 14, 2016Inventors: Jean-Marie BOISSIERE, Aurélien VANTOMME, Jurjen MEEUWISSEN
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Patent number: 9340631Abstract: A process for preparing a polyethylene resin having a multimodal molecular weight distribution in at least two loop slurry reactors connected in series can include polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene resin. The supported metallocene catalyst can have a particle size distribution of a span value lower than 2.5 and a D50 value within the range of from 5 ?m to 20 ?m.Type: GrantFiled: July 24, 2013Date of Patent: May 17, 2016Assignee: Total Research & Technology FeluyInventors: Christopher Willocq, Daniel Siraux, Aurélien Vantomme, Olivier Miserque
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Patent number: 9221930Abstract: A polyethylene can be prepared with a metallocene catalyst system. The polyethylene can have a density of at least 0.945 g/cm3 measured according to ISO 1183, and a Si content of 5 to 40 ppm by weight.Type: GrantFiled: September 6, 2012Date of Patent: December 29, 2015Assignee: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Aurélien Vantomme, Christopher Willocq
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Publication number: 20150315304Abstract: supported catalyst system may include a titanated silica-containing catalyst support having at least 0.1 wt % of Ti and a specific surface area of from 150 m2/g to 800 m2/g. The Ti may be of a 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 carbons or halogens, wherein n is 0 to 4, wherein m is 0 to 4, and wherein m+n equals 4. The supported catalyst system may include a catalyst activating agent and a metallocene. The supported catalyst system may be obtained by a process including titanating a silica-containing catalyst support with at least one vapourised titanium compound, and treating the titanated silica-containing catalyst support with a catalyst activating agent and a metallocene.Type: ApplicationFiled: May 11, 2015Publication date: November 5, 2015Inventors: Christopher Willocq, Martine Slawinski, Aurélien Vantomme
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Patent number: 9156922Abstract: 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 vaporized 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: GrantFiled: March 3, 2011Date of Patent: October 13, 2015Assignee: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Christopher Willocq, Martine Slawinski, Aurélien Vantomme
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Patent number: 9126179Abstract: The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.Type: GrantFiled: July 28, 2014Date of Patent: September 8, 2015Assignee: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Eric Damme, Louis Fouarge, Jerome Bette, Alvaro Fernandez, Aurelien Vantomme, Renaud Oreins, Daniel Siraux
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Publication number: 20150239999Abstract: A process for preparing a polyethylene resin having a multimodal molecular weight distribution in at least two loop slurry reactors connected in series can include polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene resin. The supported metallocene catalyst can have a particle size distribution of a span value lower than 2.5 and a D50 value within the range of from 5 ?m to 20 ?m.Type: ApplicationFiled: July 24, 2013Publication date: August 27, 2015Inventors: Christopher Willocq, Daniel Siraux, Aurélien Vantomme, Olivier Miserque
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Publication number: 20150166697Abstract: An uncompounded particulate metallocene-produced polyethylene can have a multimodal molecular weight distribution and particle size distribution measured by obtaining at least four fractions by sieving. A set of Mw values including an Mw value for each fraction can be obtained. A set of Mn values including an Mn value for each fraction can be obtained. A ratio between a standard deviation value of the Mw set and a mean value of the Mw set can be equal to or less than 0.15. A ratio between a standard deviation value of the Mn set and a mean value of the Mn set can be equal to or less than 0.15. The uncompounded particulate metallocene-produced polyethylene can be prepared by a process that includes polymerization in an apparatus. The apparatus can include at least three serially connected loop reactors.Type: ApplicationFiled: July 26, 2013Publication date: June 18, 2015Inventors: Aurelien Vantomme, Christopher Willocq, Daan Dewachter
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Patent number: 8969494Abstract: 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: September 9, 2013Date of Patent: March 3, 2015Assignee: Total Research & Technology FeluyInventors: Alain Standaert, Romain Luijkx, Martine Slawinski, Aurelien Vantomme
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Patent number: 8946359Abstract: The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent through a sleeve provided around at least part of the shaft of the pump. Also, the invention relates to the use of anti-fouling agent to prevent or reduce fouling by feeding the anti-fouling agent against the impeller of the pump upon introduction to the loop reactor.Type: GrantFiled: July 29, 2011Date of Patent: February 3, 2015Assignee: Total Research & Technology FeluyInventors: Daniel Siraux, Aurélien Vantomme, Eric Damme, Daan Dewachter
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Patent number: 8911872Abstract: The invention relates to A process for the polymerization of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3, wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0, and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3, in the presence of a Ziegler-Natta catalyst system.Type: GrantFiled: June 9, 2014Date of Patent: December 16, 2014Assignee: Total Research & Technology FeluyInventors: Aurélien Vantomme, Daniel Siraux, Alain Van Sinoy, Jean-Léon Gielens
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Publication number: 20140334984Abstract: The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.Type: ApplicationFiled: July 28, 2014Publication date: November 13, 2014Inventors: Eric Damme, Louis Fouarge, Jerome Bette, Alvaro Fernandez, Aurelien Vantomme, Renaud Oreins, Daniel Siraux
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Publication number: 20140303340Abstract: A polyethylene can be prepared with a metallocene catalyst system. The polyethylene can have a density of at least 0.945 g/cm3 measured according to ISO 1183, and a Si content of 5 to 40 ppm by weight.Type: ApplicationFiled: September 6, 2012Publication date: October 9, 2014Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Aurélien Vantomme, Christopher Willocq
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Publication number: 20140288258Abstract: The invention relates to A process for the polymerisation of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm3, wherein in one reactor 30 to 47 wt % based on the total weight of the polyethylene resin of a high molecular weight (HMW) polyethylene fraction is produced having an HL275 of from 0.05 to 1.8 g/10 min (the equivalent of HLMI of from 0.01 to 1.56 g/10 min), a density of from 0.925 to 0.942 g/cm3 and an MWD of at least 5.0, and in the other reactor a low molecular weight (LMW) polyethylene fraction is produced having an HLMI of from 10 to 1500 g/10 min and a density of from 0.960 to 0.975 g/cm3, in the presence of a Ziegler-Natta catalyst system.Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Inventors: Aurélien Vantomme, Daniel Siraux, Alain Van Sinoy, Jean-Léon Gielens