Patents by Inventor Volker Fraaije
Volker Fraaije 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: 20240117141Abstract: A process for the hydrodepolymerization of polymeric waste material at a hydrogen pressure from 20 to 500 bar, with a hydrocracking catalyst made from or containing (a) a hydrogenating component made from or containing a metal selected from the group consisting of Fe, Mo, W, Ti, Ni, Cr, V, Co, Zr, and mixtures thereof, supported on an inorganic carrier, and (b) a depolymerizing component being an acidic compound.Type: ApplicationFiled: January 20, 2022Publication date: April 11, 2024Applicant: Basell Poliolefine Italia S.r.l.Inventors: Shahram Mihan, Volker Fraaije
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Patent number: 11518824Abstract: A nano platelet gibbsite treated with compound of formula (ORa)3Si—Rb or of formula Rc—COOH wherein Ra equal to or different from each other is a C1-C10 alkyl radical; Rb is a C5-C30 hydrocarbon radical and Rc is a C5-C30 hydrocarbon radical is used as a catalyst support.Type: GrantFiled: October 5, 2018Date of Patent: December 6, 2022Assignees: Basell Polyolefine GmbH, Albert-Ludwias-Universität FreiburoInventors: Shahram Mihan, Heike Gregorius, Volker Fraaije, Rolf Mulhaupt, Fan Zhong
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Patent number: 11319424Abstract: A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.Type: GrantFiled: September 9, 2020Date of Patent: May 3, 2022Assignee: Basell Poliolefine Italia S.r.l.Inventors: Diego Brita, Sheri E. Davis, Volker Fraaije, Simona Guidotti, Dario Liguori, Sandor Nagy, David L. Ramage, Shahram Mihan, Christopher D. Smith, Daniel F. White, Xueyong Yang
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Publication number: 20210221923Abstract: A nano platelet gibbsite treated with compound of formula (ORa)3Si—R or of formula Rc—COOH wherein Ra equal to or different from each other is a C1-C10 alkyl radical; Rb is a C5-C30 hydrocarbon radical and Rc is a C5-C30 hydrocarbon radical is used as a catalyst support.Type: ApplicationFiled: October 5, 2018Publication date: July 22, 2021Applicants: BASELL POLYOLEFINE GMBH, ALBERT-LUDWIGS-UNIVERSITAT FREIBURGInventors: SHAHRAM MIHAN, HEIKE GREGORIUS, VOLKER FRAAIJE, ROLF MULHAUPT, FAN ZHONG
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Publication number: 20210070958Abstract: A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.Type: ApplicationFiled: September 9, 2020Publication date: March 11, 2021Applicant: Basell Poliolefine Italia S.r.l.Inventors: Diego Brita, Sheri E. Davis, Volker Fraaije, Simona Guidotti, Dario Liguori, Sandor Nagy, David L. Ramage, Shahram Mihan, Christopher D. Smith, Daniel F. White, Xueyong Yang
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Publication number: 20210061972Abstract: A method of depolymerizing plastics using a fluorinated alumina catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.Type: ApplicationFiled: August 25, 2020Publication date: March 4, 2021Applicant: Basell Poliolefine Italia S.r.l.Inventors: Sandor Nagy, Christopher D. Smith, Xueyong Yang, Daniel F. White, Sheri E. Davis, Shahram Mihan, Volker Fraaije
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Patent number: 10358509Abstract: The present disclosure relates to a continuous process for the preparation of ethylene homopolymers or ethylene copolymers comprising polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a chromium catalyst in a gas-phase polymerization reactor which is equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger for cooling and feeding the reactor gas back to the reactor, wherein the polymerization is carried out at a temperature from 30° C. to 130° C. and a pressure of from 0.1 to 10 MPa and an aliphatic carboxylic acid ester having from 8 to 24 carbon atoms is added.Type: GrantFiled: March 23, 2016Date of Patent: July 23, 2019Assignee: Basell Polyolefine GmbHInventors: Volker Fraaije, Michael Lynch, Shahram Mihan, Gerhardus Meier, Ulf Schueller
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Publication number: 20180079842Abstract: The present disclosure relates to a continuous process for the preparation of ethylene homopolymers or ethylene copolymers comprising polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a chromium catalyst in a gas-phase polymerization reactor which is equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger for cooling and feeding the reactor gas back to the reactor, wherein the polymerization is carried out at a temperature from 30° C. to 130° C. and a pressure of from 0.1 to 10 MPa and an aliphatic carboxylic acid ester having from 8 to 24 carbon atoms is added.Type: ApplicationFiled: March 23, 2016Publication date: March 22, 2018Applicant: Basell Polyolefine GmbHInventors: Volker Fraaije, Michael Lynch, Shahram Mihan, Gerhardus Meier, Ulf Schueller
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Patent number: 8999875Abstract: The invention refers to a process for preparing a supported catalyst system for the polymerization of olefins comprising at least one active catalyst component on a support, the process comprising A) impregnating a dry porous support component with a mixture comprising at least one precatalyst, at least one cocatalyst, and a first solvent, such that the total volume of the mixture is from 0.8 to 2.0 times the total pore volume of the support component, and B) thereafter, adding a second solvent in an amount of more than 1.5 times the total pore volume of the support component. The invention refers further to a catalyst system made by this process and the use of this catalyst system for polymerization or copolymerization of olefins.Type: GrantFiled: May 26, 2011Date of Patent: April 7, 2015Assignee: Basell Polyolefine GmbHInventors: Fabiana Fantinel, Shahram Mihan, Rainer Karer, Volker Fraaije
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Patent number: 8859451Abstract: The present invention refers to a process for the preparation of supported catalysts for the polymerization of olefins comprising at least a late transition metal complex, wherein the process comprises two steps. In the first step a catalytically active component comprising at least one late transition metal complex, optionally in the presence of one or more cocatalysts is mixed with a support; and in the second step the obtained mixture is treated at a reduced pressure under a flow of inert gas at a temperature equal to or below 40° C. to obtain a supported catalyst. The method is especially useful for the preparation of dual supported catalysts, useful in the gas-phase polymerization of olefins.Type: GrantFiled: December 16, 2010Date of Patent: October 14, 2014Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Volker Fraaije, Harald Schmitz
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Patent number: 8680001Abstract: The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.Type: GrantFiled: September 24, 2008Date of Patent: March 25, 2014Assignee: Basell Polyolefine GmbHInventors: Heike Gregorius, Volker Fraaije, Manfred Lutringshauser
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Publication number: 20130072652Abstract: The invention refers to a process for preparing a supported catalyst system for the polymerization of olefins comprising at least one active catalyst component on a support, the process comprising A) impregnating a dry porous support component with a mixture comprising at least one precatalyst, at least one cocatalyst, and a first solvent, such that the total volume of the mixture is from 0.8 to 2.0 times the total pore volume of the support component, and B) thereafter, adding a second solvent in an amount of more than 1.5 times the total pore volume of the support component. The invention refers further to a catalyst system made by this process and the use of this catalyst system for polymerization or copolymerization of olefins.Type: ApplicationFiled: May 26, 2011Publication date: March 21, 2013Applicant: Basell Polyolefine GmbHInventors: Fabiana Fantinel, Shahram Mihan, Rainer Karer, Volker Fraaije
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Publication number: 20120283400Abstract: The present invention refers to a process for the preparation of supported catalysts for the polymerization of olefins comprising at least a late transition metal complex, wherein the process comprises two steps. In the first step a catalytically active component comprising at least one late transition metal complex, optionally in the presence of one or more cocatalysts is mixed with a support; and in the second step the obtained mixture is treated at a reduced pressure under a flow of inert gas at a temperature equal to or below 40° C. to obtain a supported catalyst. The method is especially useful for the preparation of dual supported catalysts, useful in the gas-phase polymerization of olefins.Type: ApplicationFiled: December 16, 2010Publication date: November 8, 2012Applicant: Basell Polyolefine GmbHInventors: Shahram Mihan, Volker Fraaije, Harald Schmitz
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Patent number: 7569651Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.Type: GrantFiled: May 18, 2005Date of Patent: August 4, 2009Assignee: Basell Polypropylen GmbHInventors: Jörg Schottek, Markus Oberhoff, Carsten Bingel, David Fischer, Horst Weiβ, Andreas Winter, Volker Fraaije, Ralph-Dieter Maier, Wolfgang Bidell, Nicola Paczkowski, Jürgen Suhm, Roland Kratzer
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Publication number: 20090030166Abstract: The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.Type: ApplicationFiled: September 24, 2008Publication date: January 29, 2009Applicant: Basell Polyolefine GmbHInventors: Heike Gregorius, Volker Fraaije, Manfred Lutringshauser
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Patent number: 7446072Abstract: The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.Type: GrantFiled: December 16, 2003Date of Patent: November 4, 2008Assignee: Basell Polyolefine GmbHInventors: Heike Gregorius, Volker Fraaije, Manfred Lutringshauser
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Patent number: 7342078Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.Type: GrantFiled: December 13, 2000Date of Patent: March 11, 2008Assignee: Basell Polyolefine GmbHInventors: Jörg Schottek, Markus Oberhoff, Carsten Bingel, David Fischer, Horst Weiβ, Andreas Winter, Volker Fraaije, Ralph-Dieter Maier, Wolfgang Bidell, Nicola Paczkowski, Jürgen Suhm, Roland Kratzer
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Patent number: 7285513Abstract: The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing A) at least one organic transition metal compound, B) a mixture of at least two different organo metallic compounds and C) at least one cation-forming compound into contact with one another, wherein the organic transition metal compound A) is firstly brought into contact with the mixture of the organo metallic compounds B). In addition, the invention relates to the use of the catalyst for olefin polymerization, to catalysts obtainable by this process and to a process for the polymerization of olefins in which these catalysts are used.Type: GrantFiled: July 14, 2003Date of Patent: October 23, 2007Assignee: Basell Polyolefine GmbHInventors: Roland Kratzer, Volker Fraaije
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Patent number: 7122606Abstract: A process for polymerizing one or more alpha-olefins of formula CH2?CHT wherein T is a hydrogen atom or a C1–C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25° to 70° C.; in order to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.Type: GrantFiled: June 29, 2004Date of Patent: October 17, 2006Assignee: Basell Polyolefine GmbHInventors: Maria Silvia Tonti, Markus Oberhoff, Volker Fraaije, Bernd Bachmann
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Patent number: 7094724Abstract: Catalyst solid for olefin polymerization comprising A) at least one calcined hydrotalcite and B) at least one organic transition metal compound, and also a catalyst system comprising the catalyst solid, the use of the catalyst solid for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst solid.Type: GrantFiled: June 13, 2001Date of Patent: August 22, 2006Assignee: Bassell Polyelefine GmbHInventors: Volker Fraaije, Markus Oberhoff, Nicola (Hüsgen) Paczkowski, Markus Schopf, Wolfgang Bidell, Joachim Wulff-Döring, Shahram Mihan