Patents by Inventor Michael J. Bayer
Michael J. Bayer 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: 9024016Abstract: In one embodiment, the invention relates to processes for producing acesulfame potassium. In one embodiment, the process comprises the step of reacting a first reaction mixture to form an amidosulfamic acid salt such as a trialkyl ammonium amidosulfamic acid salt. The first reaction mixture comprises sulfamic acid, an amine, and smaller amounts, if any, acetic acid, e.g., less than 1 wt % (10000 wppm). In terms of ranges, the first reaction mixture may comprise from 1 wppm to 1 wt % acetic acid. The process further comprises the step of reacting the amidosulfamic acid salt with diketene to form an acetoacetamide salt. In preferred embodiments, the amidosulfamic acid salt formation reaction is conducted at pH levels from 5.5 to 7.0. The process further comprises the step of deriving the acesulfame-K from the acetoacetamide salt.Type: GrantFiled: May 24, 2013Date of Patent: May 5, 2015Assignee: Nutrinova Nutrition Specialists & Food Ingredients GmbHInventors: Michael J. Bayer, Stephan Brietzke, Peter Groer, Christoph Mollenkopf
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Patent number: 8993796Abstract: The present invention relates to a process for the separation of vinyl acetate from a gas mixture formed by the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds.Type: GrantFiled: November 28, 2009Date of Patent: March 31, 2015Assignee: Celanese International CorporationInventors: Bernd Rinne, Stefan Hess, Ali Hotaman, Michael J. Bayer, Berthold Nuber
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Patent number: 8663595Abstract: In one embodiment, the invention is to a process for purifying a by-product stream. The process comprises the step of providing a by-product stream comprising an ammonium salt, dimerized amide, and optionally water. The process further comprises the step of precipitating at least a portion of the dimerized amide in the by-product stream to form solid dimerized amide. The process further comprises the step of separating the solid dimerized amide from the by-product stream to form a treated by-product stream comprising less than 1 wt. % solid dimerized amide.Type: GrantFiled: December 21, 2011Date of Patent: March 4, 2014Assignee: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Christoph Mollenkopf, Michael J. Bayer
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Publication number: 20130331565Abstract: In one embodiment, the invention relates to processes for producing acesulfame potassium. In one embodiment, the process comprises the step of reacting a first reaction mixture to form an amidosulfamic acid salt such as a trialkyl ammonium amidosulfamic acid salt. The first reaction mixture comprises sulfamic acid, an amine, and smaller amounts, if any, acetic acid, e.g., less than 1 wt % (10000 wppm). In terms of ranges, the first reaction mixture may comprise from 1 wppm to 1 wt % acetic acid. The process further comprises the step of reacting the amidosulfamic acid salt with diketene to form an acetoacetamide salt. In preferred embodiments, the amidosulfamic acid salt formation reaction is conducted at pH levels from 5.5 to 7.0. The process further comprises the step of deriving the acesulfame-K from the acetoacetamide salt.Type: ApplicationFiled: May 24, 2013Publication date: December 12, 2013Inventors: Michael J. Bayer, Stephan Brietzke, Peter Groer, Christoph Mollenkopf
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Publication number: 20130164211Abstract: In one embodiment, the invention is to a process for purifying a by-product stream. The process comprises the step of providing a by-product stream comprising an ammonium salt, dimerized amide, and optionally water. The process further comprises the step of precipitating at least a portion of the dimerized amide in the by-product stream to form solid dimerized amide. The process further comprises the step of separating the solid dimerized amide from the by-product stream to form a treated by-product stream comprising less than 1 wt. % solid dimerized amide.Type: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Christoph Mollenkopf, Michael J. Bayer
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Patent number: 8309048Abstract: The invention relates to a process for producing an ammonium salt composition. The process comprises the step of providing a process stream comprising sulfuric acid, methylene dichloride, and a tertiary amine or a precursor thereof. The process further comprises the step of contacting the process stream with ammonia to form a product stream and a waste stream. The product stream comprises the ammonium salt and the waste stream comprises water, methylene dichloride, ammonia, and the tertiary amine. The process further comprises the step of deriving from the waste stream an off gas stream comprising ammonia and a first amount of methylene dichloride. The process also comprises the step of contacting at least a portion of the off gas stream or a derivative thereof with an adsorbent to separate at least a portion of the off gas into a methylene dichloride stream comprising methylene dichloride.Type: GrantFiled: April 18, 2011Date of Patent: November 13, 2012Assignee: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Carl Christoph Mollenkopf, Michael J. Bayer
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Patent number: 8303921Abstract: The invention relates to a process of producing an ammonium salt composition. The process comprises the step of providing a process stream comprising sulfuric acid and at least one tertiary amine. The process further comprises the step of contacting the process stream with ammonia to form a waste stream and a product stream. The waste stream comprises water, tertiary amine, and ammonia and the product stream comprises a first amount of ammonium salt. The process further comprises the step of deriving from the waste stream an off gas stream comprising a preliminary amount of ammonia. The process also comprises the step of contacting the off gas stream with an acid to form an ammonium salt stream and a purge stream. The ammonium salt stream comprises a second amount of ammonium salt and the purge stream comprises a reduced amount of ammonia, which is less than the preliminary amount.Type: GrantFiled: April 18, 2011Date of Patent: November 6, 2012Assignee: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Carl Christoph Mollenkopf, Michael J. Bayer
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Publication number: 20120136170Abstract: The present invention relates to a process for the separation of vinyl acetate from a gas mixture formed by the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds.Type: ApplicationFiled: November 28, 2009Publication date: May 31, 2012Applicant: CELANESE CHEMICALS EUROPE GMBHInventors: Bernd Rinne, Stefan Hess, Ali Hotaman, Michael J. Bayer, Berthold Nuber
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Publication number: 20110256045Abstract: In one embodiment, the invention is to a process of producing an ammonium salt composition. The process comprises the step of providing a process stream comprising sulfuric acid and at least one tertiary amine. The process further comprises the step of contacting the process stream with ammonia under conditions effective to form a waste stream and a product stream. The waste stream comprises water, the tertiary amine, and ammonia and the product stream comprises a first amount of ammonium salt. The process further comprises the step of deriving from the waste stream an off gas stream comprising a preliminary amount of ammonia. The process also comprises the step of contacting the off gas stream with an acid under conditions effective to form an ammonium salt stream and a purge stream. The ammonium salt stream comprises a second amount of ammonium salt and the purge stream comprises a reduced amount of ammonia, which is less than the preliminary amount.Type: ApplicationFiled: April 18, 2011Publication date: October 20, 2011Applicant: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Carl Christoph Mollenkopf, Michael J. Bayer
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Publication number: 20110256046Abstract: In one embodiment, the invention is to a process for producing an ammonium salt composition. The process comprises the step of providing a process stream comprising sulfuric acid, methylene dichloride, and a tertiary amine or a precursor thereof. The process further comprises the step of contacting the process stream with ammonia under conditions effective to form a product stream and a waste stream. The product stream comprises the ammonium salt and the waste stream comprises water, methylene dichloride, ammonia, and the tertiary amine. The process further comprises the step of deriving from the waste stream an off gas stream comprising ammonia and a first amount of methylene dichloride. The process also comprises the step of contacting at least a portion of the off gas stream or a derivative thereof with an adsorbent under conditions effective to separate at least a portion of the off gas into a methylene dichloride stream comprising methylene dichloride.Type: ApplicationFiled: April 18, 2011Publication date: October 20, 2011Applicant: Celanese International CorporationInventors: Stephan Brietzke, Peter Groer, Carl Christoph Mollenkopf, Michael J. Bayer
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Patent number: 7301048Abstract: A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).Type: GrantFiled: July 11, 2006Date of Patent: November 27, 2007Assignee: Celanese Chemicals Europe GmbHInventors: Johann Stamm, Bernd Rinne, Stefan Hess, Hans-Jochen Sachs, Michael Sehr, Michael J. Bayer, Berthold Nuber, Martin Wagner
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Patent number: RE48464Abstract: In one embodiment, the invention relates to processes for producing acesulfame potassium. In one embodiment, the process comprises the step of reacting a first reaction mixture to form an amidosulfamic acid salt such as a trialkyl ammonium amidosulfamic acid salt. The first reaction mixture comprises sulfamic acid, an amine, and smaller amounts, if any, acetic acid, e.g., less than 1 wt % (10000 wppm). In terms of ranges, the first reaction mixture may comprise from 1 wppm to 1 wt % acetic acid. The process further comprises the step of reacting the amidosulfamic acid salt with diketene to form an acetoacetamide salt. In preferred embodiments, the amidosulfamic acid salt formation reaction is conducted at pH levels from 5.5 to 7.0. The process further comprises the step of deriving the acesulfame-K from the acetoacetamide salt.Type: GrantFiled: February 13, 2017Date of Patent: March 16, 2021Assignee: Celanese Sales Germany GmbHInventors: Michael J. Bayer, Stephan Brietzke, Peter Groer, Christoph Mollenkopf