Patents by Inventor Udo Wiesner
Udo Wiesner 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: 11578157Abstract: The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of isobutene and optionally further monomers in the presence of an initiator system prepared by continuously contacting at least one boron or aluminium compound and at least one initiator.Type: GrantFiled: July 6, 2018Date of Patent: February 14, 2023Assignee: ARLANXEO DEUTSCHLAND GMBHInventors: Hanns-Ingolf Paul, Rolf Feller, Udo Wiesner, Carsten Kreuder, Adam Gronowski, Ricarda Leiberich, Joachim Ritter
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Patent number: 11291973Abstract: The invention relates to a reactor and to a method for continuous polymerization, in which said reactor for the continuous production of polymers, particularly synthetic rubbers, contains at least one substantially tubular reactor housing (4), wherein said reactor housing (4) has a drive shaft (30) that is connected to at least one agitator (38) arranged such that it can rotate inside the reactor housing (4), and the agitator contains at least one, and preferably two, three or four helical mixing elements (24) which are designed to be preferably close to the wall or to come into contact with the wall.Type: GrantFiled: July 6, 2018Date of Patent: April 5, 2022Assignee: ARLANXEO DEUTSCHLAND GMBHInventors: Rolf Feller, Hanns-Ingolf Paul, Paul Wagner, Udo Wiesner
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Publication number: 20210139621Abstract: The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of isobutene and optionally further monomers in the presence of an initiator system prepared by continuously contacting at least one boron or aluminium compound and at least one initiator.Type: ApplicationFiled: July 6, 2018Publication date: May 13, 2021Inventors: Hanns-Ingolf PAUL, Rolf FELLER, Udo WIESNER, Carsten KREUDER, Adam GRONOWSKI, Ricarda LEIBERICH, Joachim RITTER
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Publication number: 20210008519Abstract: The invention relates to a reactor and to a method for continuous polymerization, in which said reactor for the continuous production of polymers, particularly synthetic rubbers, contains at least one substantially tubular reactor housing (4), wherein said reactor housing (4) has a drive shaft (30) that is connected to at least one agitator (38) arranged such that it can rotate inside the reactor housing (4), and the agitator contains at least one, and preferably two, three or four helical mixing elements (24) which are designed to be preferably close to the wall or to come into contact with the wall.Type: ApplicationFiled: July 6, 2018Publication date: January 14, 2021Inventors: Rolf FELLER, Hanns-Ingolf PAUL, Paul WAGNER, Udo WIESNER
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Patent number: 10017588Abstract: The present invention relates to water and solvent-free halogenated butyl rubber products as well as a process for the production thereof.Type: GrantFiled: February 26, 2015Date of Patent: July 10, 2018Assignee: ARLANXEO Deutschland GmbHInventors: Jorg Kirchhoff, Rolf Feller, Hanns-Ingolf Paul, Udo Wiesner, John Lovegrove, Adam Gronowski
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Patent number: 9925693Abstract: The invention relates to a method for degassing elastomer-containing media, such as elastomer solutions and dispersions in particular, and degassing devices (1) for carrying out said method.Type: GrantFiled: April 4, 2014Date of Patent: March 27, 2018Assignee: ARLANXEO Deutschland GmbHInventors: Hanns-Ingolf Paul, Joerg Kirchhoff, Udo Wiesner, Luc Timmermans, Nicolai Dieltiens
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Patent number: 9657158Abstract: The invention relates to an energy efficient, environmentally favorable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.Type: GrantFiled: July 28, 2015Date of Patent: May 23, 2017Assignee: ARLANXEO Deutschland GmbHInventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen
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Patent number: 9562125Abstract: The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity.Type: GrantFiled: September 23, 2011Date of Patent: February 7, 2017Assignee: ARLANXEO Deutschland GmbHInventors: Ursula Tracht, Ricarda Leiberich, Michael Berger, Hanns-Ingolf Paul, Udo Wiesner
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Patent number: 9273161Abstract: The invention relates to an energy efficient, environmentally favorable process for the preparation of halogenated rubbers, in particular chloro- and bromobutyl rubber, that uses a common aliphatic medium of specific composition for both solution polymerization and subsequent halogenation of the rubber. More particularly, the invention relates to a process that employs a common aliphatic medium for both solution polymerization and halogenation of rubber with intermediate removal of un-reacted monomers.Type: GrantFiled: January 17, 2011Date of Patent: March 1, 2016Assignee: LANXESS INTERNATIONAL SAInventors: Carsten Kreuder, Adam Gronowski, John Lovegrove, Hanns-Ingolf Paul, Rolf Feller, Udo Wiesner
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Publication number: 20160023376Abstract: The invention relates to a method for degassing elastomer-containing media, such as elastomer solutions and dispersions in particular, and degassing devices (1) for carrying out said method.Type: ApplicationFiled: April 4, 2014Publication date: January 28, 2016Inventors: Hanns-Ingolf PAUL, Joerg KIRCHHOFF, Udo WIESNER, Luc TIMMERMANS, Nicolai DIELTIENS
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Publication number: 20150329700Abstract: The invention relates to an energy efficient, environmentally favourable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.Type: ApplicationFiled: July 28, 2015Publication date: November 19, 2015Inventors: Ricarda LEIBERICH, Joachim RITTER, Hanns-Ingolf PAUL, Udo WIESNER, Holger LUESGEN
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Patent number: 9127137Abstract: The invention relates to an energy efficient, environmentally favorable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.Type: GrantFiled: July 17, 2012Date of Patent: September 8, 2015Assignee: LANXESS INTERNATIONAL SAInventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen
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Publication number: 20150183894Abstract: The present invention relates to water and solvent-free halogenated butyl rubber products as well as a process for the production thereof.Type: ApplicationFiled: February 26, 2015Publication date: July 2, 2015Inventors: Jorg KIRCHHOFF, Rolf FELLER, Hanns-Ingolf PAUL, Udo WIESNER, John LOVEGROVE, Adam GRONOWSKI
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Patent number: 9068031Abstract: The present invention relates to a reactor (10) and a process for continuous polymerization, where the reactor (10) has an essentially tubular reactor housing (16). The reactor housing (16) has a drive (38) which runs along the geometric central axis (12) in the flow direction (22) and is configured as a central shaft. A rotatably arranged scraper or wiper (36) is provided within the reactor housing (16); the scraper or wiper (36) has at least one scraper or wiper blade (42) to run along an interior side (44) of the reactor housing (16). The rotational movement of the scraper or wiper (36) results in radial mixing of a stream within the reactor housing (16) which dominates gravity effects and, by virtue of shaping of the scrapers or wipers, optionally makes plug flow or a loop flow or backflow within the reactor (10) or else via an additional external pumped circulation system (23) possible.Type: GrantFiled: December 29, 2011Date of Patent: June 30, 2015Assignee: LANXESS INTERNATIONAL SAInventors: Hanns-Ingolf Paul, Rolf Feller, Paul Wagner, John Lovegrove, Joachim Ritter, Ricarda Leiberich, Jörg Kirchhoff, Udo Wiesner
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Patent number: 9023983Abstract: The invention is directed to an extruder (10), particularly for extruding a synthetic rubber product, which comprises a barrel (24), one or several extruder elements (12, 14), particularly one or several extruder screws and/or a kneader elements (14), arranged inside the barrel (24) for conveying the product, optionally an inlet port for feeding a stripping agent into the barrel (24) and an outlet port for removing volatile compounds from the product and, where applicable, the stripping agent. According to the invention a perforated die plate (26) is fixed to the barrel (24) in flow direction before the outlet port. Since the die plate (26) is not fixed to the extruder elements (12, 14) but to the barrel (24) a circumferential clearance between the die plate (26) and the barrel (24) is prevented so that no extruded material is passing the die plate (26) radially outside.Type: GrantFiled: July 22, 2011Date of Patent: May 5, 2015Assignee: LANXESS Deutschland GmbHInventors: Hanns-Ingolf Paul, Udo Wiesner, Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber
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Publication number: 20140309362Abstract: The invention relates to an energy efficient, environmentally favourable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.Type: ApplicationFiled: July 17, 2012Publication date: October 16, 2014Applicant: LANXESS INTERNATIONAL SAInventors: Ricarda Leiberich, Joachim Ritter, Hanns-Ingolf Paul, Udo Wiesner, Holger Luesgen
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Patent number: 8747756Abstract: The present invention relates to a reactor (10) and a process for continuous polymerization, where the reactor (10) has an essentially tubular reactor housing (16). The reactor housing (16) has a drive (38) which runs along the geometric central axis (12) in the flow direction (22) and is configured as a central shaft. A rotatably arranged scraper or wiper (36) is provided within the reactor housing (16); the scraper or wiper (36) has at least one scraper or wiper blade (42) to run along an interior side (44) of the reactor housing (16). The rotational movement of the scraper or wiper (36) results in radial mixing of a stream within the reactor housing (16) which dominates gravity effects and, by virtue of shaping of the scrapers or wipers, optionally makes plug flow or backflow within the reactor (10) possible.Type: GrantFiled: July 1, 2010Date of Patent: June 10, 2014Assignee: LANXESS International SAInventors: Rolf Feller, Hanns-Ingolf Paul, Paul Wagner, John Lovegrove, Jörg Kirchhoff, Joachim Ritter, Ricarda Leiberich, Udo Wiesner
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Publication number: 20140148561Abstract: The present invention relates to a reactor (10) and a process for continuous polymerization, where the reactor (10) has an essentially tubular reactor housing (16). The reactor housing (16) has a drive (38) which runs along the geometric central axis (12) in the flow direction (22) and is configured as a central shaft. A rotatably arranged scraper or wiper (36) is provided within the reactor housing (16); the scraper or wiper (36) has at least one scraper or wiper blade (42) to run along an interior side (44) of the reactor housing (16). The rotational movement of the scraper or wiper (36) results in radial mixing of a stream within the reactor housing (16) which dominates gravity effects and, by virtue of shaping of the scrapers or wipers, optionally makes plug flow or a loop flow or backflow within the reactor (10) or else via an additional external pumped circulation system (23) possible.Type: ApplicationFiled: December 29, 2011Publication date: May 29, 2014Applicant: LANXESS INTERNATIONAL S.A.Inventors: Hanns-Ingolf Paul, Rolf Feller, Paul Wagner, John Lovegrove, Joachim Ritter, Ricarda Leiberich, Jörg Kirchhoff, Udo Wiesner
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Publication number: 20140058050Abstract: The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity.Type: ApplicationFiled: September 23, 2011Publication date: February 27, 2014Applicant: LANXESS Deutschland GmbHInventors: Ursula Tracht, Ricarda Leiberich, Michael Berger, Hanns-Ingolf Paul, Udo Wiesner
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Publication number: 20140039142Abstract: The invention is directed to an extruder (10), particularly for extruding a synthetic rubber product, which comprises a barrel (24), one or several extruder elements (12, 14), particularly one or several extruder screws and/or a kneader elements (14), arranged inside the barrel (24) for conveying the product, optionally an inlet port for feeding a stripping agent into the barrel (24) and an outlet port for removing volatile compounds from the product and, where applicable, the stripping agent. According to the invention a perforated die plate (26) is fixed to the barrel (24) in flow direction before the outlet port. Since the die plate (26) is not fixed to the extruder elements (12, 14) but to the barrel (24) a circumferential clearance between the die plate (26) and the barrel (24) is prevented so that no extruded material is passing the die plate (26) radially outside.Type: ApplicationFiled: July 22, 2011Publication date: February 6, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Hanns-Ingolf Paul, Udo Wiesner, Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber