Patents by Inventor Ulf Schüller
Ulf Schüller 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: 9289935Abstract: A process for homogenizing and pelletizing a polyethylene composition comprising the steps of a) providing a polyethylene composition having a density of from 0.90 g/cm3 to 0.97 g/cm3 and a melt flow rate MFR21.6 at 190° C. under a load of 21.6 kg of from 1 g/10 min to 80 g/10 min, b) melting the polyethylene composition; c) passing the melt through a combination of screens consisting of screens having a mesh opening of at least 205 ?m and comprising at least two screens having a mesh opening of from 205 ?m to 350 ?m; and e) pelletizing the molten polyethylene composition, the use of a polyethylene composition obtained by such a process for the preparation of films, fibers, pipes, blow-molded articles, injection-molded articles, compression-molded articles or rotomolded articles and films, fibers, pipes, blow-molded articles, injection-molded articles, compression-molded articles or rotomolded articles prepared from a polyethylene composition obtained by such a process.Type: GrantFiled: May 8, 2012Date of Patent: March 22, 2016Assignee: Basell Polyolefine GmbHInventors: Gerhardus Meier, Ulf Schueller, Jens Wiesecke, Decio Malucelli, Marco Consalvi
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Patent number: 9284394Abstract: A novel gas phase polymerization method is devised, for polymerization of low and ultralow density polyethylene.Type: GrantFiled: November 24, 2011Date of Patent: March 15, 2016Assignee: Basell Polyolefine GmbHInventors: Fabiana Fantinel, Shahram Mihan, Gerhardus Meier, Ulf Schueller, Maclovio Herrera Salinas, Giampaolo Pellegatti, Gerd Mannebach
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Patent number: 9273168Abstract: A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.Type: GrantFiled: August 20, 2010Date of Patent: March 1, 2016Assignee: Basell Polyolefine GmbHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid
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Publication number: 20150274866Abstract: Polyethylene composition with improved swell ratio and mechanical properties, particularly suited for preparing blow-moulded articles, said composition having the following features: 1) density from 0.952 to 0.960 g/cm3; 2) ratio MIF/MIP from 17 to 30; 3) Shear-Induced Crystallization Index SIC from 2.5 to 5.0.Type: ApplicationFiled: October 22, 2013Publication date: October 1, 2015Inventors: Iakovos Vittorias, Jens Wiesecke, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Volker Dolle, Johannes-Friedrich Enderle, Dieter Lilge, Barbara Gall
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Publication number: 20150274947Abstract: Polyethylene composition with improved balance of environmental stress cracking resistance (FNCT) and impact resistance (Charpy), particularly suited for preparing pipes, said composition having the following features: 1) density from 0.945 to 0.955 g/cm3; 2) ratio MIF/MIP from more than 30 to 45; 3) Shear-Induced Crystallization Index SIC from 1.0 to 2.5; 4) Long Chain Branching index equal to or greater than 0.85.Type: ApplicationFiled: October 22, 2013Publication date: October 1, 2015Applicant: BASELL POLYOLEFINE GMBHInventors: Iakovos Vittorias, Jens Wiesecke, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Volker Dolle, Johannes-Friedrich Enderle, Dieter Lilge, Barbara Gall
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Publication number: 20150267010Abstract: Polyethylene composition with improved swell ratio and mechanical properties, particularly suited for preparing blow-moulded articles, said composition having the following features: 1) density from 0.945 to less than 0.952 g/cm3; 2) ratio MIF/MIP from 15 to 30; 3) Shear-Induced Crystallization Index SIC from 2.5 to 5.5.Type: ApplicationFiled: October 22, 2013Publication date: September 24, 2015Inventors: Iakovos Vittorias, Jens Wiesecke, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Volker Dolle, Johannes-Friedrich Enderle, Dieter Lilge, Barbara Gall
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Patent number: 9133291Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin pType: GrantFiled: December 4, 2012Date of Patent: September 15, 2015Assignee: Basell Polyolefine GmbHInventors: Massimo Covezzi, Giuseppe Penzo, Gabriele Mei, Giulia Mei, Pietro Baita, Gerhardus Meier, Antonio De Lucia, Ulf Schueller, Gianpiero Ferraro
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Patent number: 9023945Abstract: Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.Type: GrantFiled: February 26, 2014Date of Patent: May 5, 2015Assignee: Basell Polyolefine GmbHInventors: Harilaos Mavridis, Gerhardus Meier, Ulf Schueller, Diana Doetsch, Bernd Marczinke, Iakovos Vittorias
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Patent number: 9000113Abstract: New plastomer material for use in automotive parts such as bumpers is devised here, which is a novel polyethylene produced by a gas phase process.Type: GrantFiled: May 26, 2011Date of Patent: April 7, 2015Assignee: Basell Polyolefine GmbHInventors: Fabiana Fantinel, Shahram Mihan, Gerhardus Meier, Ulf Schueller, Maclovio Salinas Herrera, Giampaolo Pellegatti, Gerd Mannebach
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Publication number: 20140309384Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors, wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin particType: ApplicationFiled: December 4, 2012Publication date: October 16, 2014Applicant: Basell Polyolefine GmbHInventors: Massimo Covezzi, Giuseppe Penzo, Gabriele Mei, Giulia Mei, Pietro Baita, Gerhardus Meier, Antonio De Lucia, Ulf Schueller, Gianpiero Ferraro
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Publication number: 20140243475Abstract: Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.Type: ApplicationFiled: February 26, 2014Publication date: August 28, 2014Applicants: Basell Polyolefine GmbH, Equistar Chemicals, LPInventors: Harilaos Mavridis, Gerhardus Meier, Ulf Schueller, Diana Doetsch, Bernd Marczinke, Iakovos Vittorias
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Patent number: 8802803Abstract: A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.Type: GrantFiled: August 20, 2010Date of Patent: August 12, 2014Assignee: Basell Polyolefine GmbHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid
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Publication number: 20140145376Abstract: A process for homogenizing and pelletizing a polyethylene composition comprising the steps of a) providing a polyethylene composition having a density of from 0.90 g/cm3 to 0.97 g/cm3 and a melt flow rate MFR21.6 at 190° C. under a load of 21.6 kg of from 1 g/10 min to 80 g/10 min, b) melting the polyethylene composition; c) passing the melt through a combination of screens consisting of screens having a mesh opening of at least 205 ?m and comprising at least two screens having a mesh opening of from 205 ?m to 350 ?m; and e) pelletizing the molten polyethylene composition, the use of a polyethylene composition obtained by such a process for the preparation of films, fibers, pipes, blow-molded articles, injection-molded articles, compression-molded articles or rotomolded articles and films, fibers, pipes, blow-molded articles, injection-molded articles, compression-molded articles or rotomolded articles prepared from a polyethylene composition obtained by such a process.Type: ApplicationFiled: May 8, 2012Publication date: May 29, 2014Applicant: Basell Polyolefine GmbHInventors: Gerhardus Meier, Ulf Schueller, Jens Wiesecke, Decio Malucelli, Marco Consalvi
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Patent number: 8716423Abstract: A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.Type: GrantFiled: August 20, 2010Date of Patent: May 6, 2014Assignee: Basell Polyolefine GmbHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid
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Publication number: 20130317185Abstract: A novel gas phase polymerisation method is devised, for polymerisation of low and ultralow density polyethylene.Type: ApplicationFiled: November 24, 2011Publication date: November 28, 2013Applicant: Basell Polyolefine GmbHInventors: Fabiana Fantinel, Shahram Mihan, Gerhardus Meier, Ulf Schueller, Maclovio Herrera Salinas, Giampaolo Pellegatti, Gerd Mannebach
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Publication number: 20130116392Abstract: New plastomer material for use in automotive parts such as bumpers is devised here, which is a novel polyethylene produced by a gas phase process.Type: ApplicationFiled: May 26, 2011Publication date: May 9, 2013Applicant: BASELL POLYOLEFINE GMBHInventors: Fabiana Fantinel, Shahram Mihan, Gerhardus Meier, Ulf Schueller, Maclovio Salinas Herrera, Giampaolo Pellegatti, Gerd Mannebach
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Publication number: 20120148777Abstract: A novel polyethylene is devised which polyethylene is particularyl advantageous for manufacturing rotomoulded articles.Type: ApplicationFiled: August 20, 2010Publication date: June 14, 2012Applicant: BASELL POLYOLEFINE GMBHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid
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Publication number: 20120148776Abstract: A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.Type: ApplicationFiled: August 20, 2010Publication date: June 14, 2012Applicant: BASELL POLYOLEFINE GMBHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid
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Publication number: 20120149834Abstract: A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.Type: ApplicationFiled: August 20, 2010Publication date: June 14, 2012Applicant: BASELL POLYOLEFINE GMBHInventors: Gerd Mannebach, Heinz Vogt, Fabiana Fantinel, Shahram Mihan, Peter Bisson, Cees Besems, Gerhardus Meier, Ulf Schüller, Barbara Gall, Iakovos Vittorias, Manfred Hecker, Michael Olmscheid