Patents by Inventor Conrad Siegers
Conrad Siegers 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: 10766974Abstract: A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasurable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer.Type: GrantFiled: July 7, 2015Date of Patent: September 8, 2020Inventor: Conrad Siegers
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Publication number: 20200181294Abstract: A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasurable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer.Type: ApplicationFiled: February 12, 2020Publication date: June 11, 2020Inventor: Conrad SIEGERS
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Patent number: 10005853Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.Type: GrantFiled: June 23, 2016Date of Patent: June 26, 2018Assignee: LANXESS International SAInventors: Gregory J. E. Davidson, Dana Adkinson, Sean Malmberg, Lorenzo Ferrari, Conrad Siegers, Sarah Chadder
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Patent number: 9969824Abstract: The present invention provides an optically transparent peroxide cured article made from a peroxide curable butyl rubber ionomer comprising repeating units derived from the reaction product of one or more multiolefin monomers and at least one nitrogen or phosphorous based nucleophile comprising a pendant vinyl group. A process is also disclosed for making the optically transparent article.Type: GrantFiled: December 13, 2013Date of Patent: May 15, 2018Assignees: LANXESS, Inc., The University of WindsorInventors: Lorenzo Ferrari, Natalie Suhan, Conrad Siegers, Tricia Breen Carmichael
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Publication number: 20170349676Abstract: A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasurable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer.Type: ApplicationFiled: July 7, 2015Publication date: December 7, 2017Applicant: ARLANXEO Singapore Pte. Ltd.Inventor: Conrad SIEGERS
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Patent number: 9815929Abstract: The present invention is directed to the functionalization of butyl rubber ionomer and optionally the grafting of polyamide to halobutyl rubber ionomers. Specifically, disclosed are methods and products resulting therefrom for creating functionalized ionomers and grafting polyamide to halobutyl ionomers via reactive extrusion. The process comprises reacting a halobutyl polymer with at least one nitrogen and/or phosphorous based nucleophile to provide a halobutyl ionomer comprising conjugated diene units; grafting of an amine-reactive dienophile to said ionomer to form a functionalized ionomer; and optionally blending the resulting functionalized ionomer with polyamide.Type: GrantFiled: February 12, 2014Date of Patent: November 14, 2017Assignee: LANXESS, Inc.Inventors: Conrad Siegers, Richard Steevensz
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Patent number: 9790297Abstract: The present invention relates to functionalized copolymers of isoolefins and olefinic monomers, particularly to azidated copolymers. The present invention also relates to methods of preparing such azidated copolymers. The functionalized copolymers are used in various technology areas such as surface modification, adhesion, drug delivery, compatibilization of polymer blends or motor oil and fuel additives, and in providing clean cured products without contaminant leaching and/or side products.Type: GrantFiled: December 21, 2012Date of Patent: October 17, 2017Assignees: ARLANXEO Deutschland GmbH, The University of WaterlooInventors: Conrad Siegers, Dana Adkinson, Gregory J. E. Davidson, Lorenzo Ferrari, Mario Gauthier
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Publication number: 20170183423Abstract: A method of separating a polyisoolefin elastomer from non-polymeric components in an organic solvent involves ultrafiltration of a solution of the polyisoolefin elastomer and non-polymeric components in an organic solvent through a semipermeable membrane to substantially retain the polyisoolefin elastomer in a retentate and provide the non-polymeric components in a permeate. Advantageously, stabilizers for the polyisoolefin elastomer are retained in the retentate along with the polyisoolefin elastomer, permeate flux through the membrane is higher as concentration of the polyisoolefin elastomer in the solution increases up to a concentration limit, the separated polyisoolefin elastomer in the retentate has a molecular weight that can be substantially unchanged even when ultrafiltration is conducted at elevated temperature and the amount of polyisoolefin elastomer in the permeate is unmeasarable providing an oligomer-rich permeate uncontaminated by polyisoolefin elastomer.Type: ApplicationFiled: July 7, 2015Publication date: June 29, 2017Applicant: ARLANXEO Singapore Pte. Ltd.Inventor: Conrad SIEGERS
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Publication number: 20170174795Abstract: The invention relates to a method to reduce or prevent agglomeration of particles of optionally halogenated rubbers in aqueous media by LCST compounds, their purification as well as ultrapure optionally halogenated rubbers. The invention further relates to (halogenated) copolymer products comprising the same or derived therefrom.Type: ApplicationFiled: July 21, 2015Publication date: June 22, 2017Applicant: ARLANXEO Singapore Pte. Ltd.Inventors: Conrad SIEGERS, David THOMPSON
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Patent number: 9540455Abstract: The present invention relates to curing of polymers, particularly to self curing of polymers. The present invention provides a process for curing of copolymers of isoolefins and olefinic monomers. The process includes the step of reacting the copolymer with an azidation reagent to form an azidated copolymer and then heating the azidated copolymer at a suitable temperature to cure the polymer.Type: GrantFiled: December 21, 2012Date of Patent: January 10, 2017Assignees: LANXESS INTERNATIONAL SA, UNIVERSITY OF WATERLOOInventors: Conrad Siegers, Dana Adkinson, Gregory J. E. Davidson, Lorenzo Ferrari, Mario Gauthier
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Publication number: 20160304634Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.Type: ApplicationFiled: June 23, 2016Publication date: October 20, 2016Inventors: Gregory J.E. DAVIDSON, Dana ADKINSON, Sean MALMBERG, Lorenzo FERRARI, Conrad SIEGERS, Sarah CHADDER
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Patent number: 9388258Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.Type: GrantFiled: November 24, 2011Date of Patent: July 12, 2016Assignee: LANXESS INTERNATIONAL SAInventors: Gregory Davidson, Dana Adkinson, Sean Malmberg, Lorenzo Ferrari, Conrad Siegers, Sarah Chadder
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Patent number: 9371443Abstract: A continuous process for the production of a dynamically vulcanized thermoplastic elastomer comprising a thermoplastic resin and a non-halogenated elastomer with a multiolefin content of greater than 3.5 mol % that has been modified in situ with a carboxylic anhydride. The process provides materials with improved elongation at break and ultimate tensile strength that can be produced economically and with reduced environmental impact.Type: GrantFiled: September 28, 2012Date of Patent: June 21, 2016Assignee: ARLANXEO Singapore Pte. Ltd.Inventors: Conrad Siegers, Ralf-Ingo Schenkel, Rayner Krista
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Publication number: 20150376320Abstract: The present invention is directed to the functionalization of butyl rubber ionomer and optionally the grafting of polyamide to halobutyl rubber ionomers. Specifically, disclosed are methods and products resulting therefrom for creating functionalized ionomers and grafting polyamide to halobutyl ionomers via reactive extrusion. The process comprises reacting a halobutyl polymer with at least one nitrogen and/or phosphorous based nucleophile to provide a halobutyl ionomer comprising conjugated diene units; grafting of an amine-reactive dienophile to said ionomer to form a functionalized ionomer; and optionally blending the resulting functionalized ionomer with polyamide.Type: ApplicationFiled: February 12, 2014Publication date: December 31, 2015Inventors: Conrad SIEGERS, Richard STEEVENSZ
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Publication number: 20150376305Abstract: The present invention provides an optically transparent peroxide cured article made from a peroxide curable butyl rubber ionomer comprising repeating units derived from the reaction product of one or more multiolefin monomers and at least one nitrogen or phosphorous based nucleophile comprising a pendant vinyl group. A process is also disclosed for making the optically transparent article.Type: ApplicationFiled: December 13, 2013Publication date: December 31, 2015Inventors: Lorenzo FERRARI, Natalie SUHAN, Conrad SIEGERS
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Publication number: 20140371399Abstract: The present invention relates to functionalized copolymers of isoolefins and olefinic monomers, particularly to azidated copolymers. The present invention also relates to methods of preparing such azidated copolymers. The functionalized copolymers are used in various technology areas such as surface modification, adhesion, drug delivery, compatibilization of polymer blends or motor oil and fuel additives, and in providing clean cured products without contaminant leaching and/or side products.Type: ApplicationFiled: December 21, 2012Publication date: December 18, 2014Inventors: Conrad Siegers, Dana Adkinson, Gregory J.E. Davidson, Lorenzo Ferrari, Mario Gauthier
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Publication number: 20140336336Abstract: The present invention relates to curing of polymers, particularly to self curing of polymers. The present invention provides a process for curing of copolymers of isoolefins and olefinic monomers. The process includes the step of reacting the copolymer with an azidation reagent to form an azidated copolymer and then heating the azidated copolymer at a suitable temperature to cure the polymer.Type: ApplicationFiled: December 21, 2012Publication date: November 13, 2014Inventors: Conrad Siegers, Dana Adkinson, Gregory J.E. Davidson, Lorenzo Ferrari, Mario Gauthier
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Publication number: 20140228521Abstract: A continuous process for the production of a dynamically vulcanized thermoplastic elastomer comprising a thermoplastic resin and a non-halogenated elastomer with a multiolefin content of greater than 3.5 mol % that has been modified in situ with a carboxylic anhydride. The process provides materials with improved elongation at break and ultimate tensile strength that can be produced economically and with reduced environmental impact.Type: ApplicationFiled: September 28, 2012Publication date: August 14, 2014Inventors: Conrad Siegers, Ralf-Ingo Schenkel, Rayner Krista
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Publication number: 20140051810Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.Type: ApplicationFiled: November 24, 2011Publication date: February 20, 2014Applicant: LANXESS Inc.Inventors: Gregory J.E. Davidson, Dana Adkinson, Sean Malmberg, Lorenzo Ferrari, Conrad Siegers, Sara Chadder