Patents by Inventor Thomas Mertz
Thomas Mertz 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: 9637574Abstract: The present invention relates to a process for preparing alkyl methacrylates and their conversion products which can be used in a multitude of chemical synthesis processes which can lead to a wide variety of different further processing products, and to an apparatus for performing this process.Type: GrantFiled: August 31, 2007Date of Patent: May 2, 2017Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Patent number: 9458083Abstract: The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).Type: GrantFiled: March 6, 2013Date of Patent: October 4, 2016Assignee: EVONIK ROEHM GmbHInventors: Arndt Selbach, Lorenza Sartorelli, Andreas Perl, Joachim Deinken, Stefanie Sohnemann, Norbert Mnich, Matthias Groemping, Udo Gropp, Thomas Mertz
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Patent number: 9169194Abstract: The present invention relates to an apparatus for metering flowable media or gases, and to the use thereof.Type: GrantFiled: March 15, 2013Date of Patent: October 27, 2015Assignee: EVONIK RÖHM GmbHInventors: Lorenza Sartorelli, Andreas Perl, Udo Gropp, Arndt Selbach, Stefanie Sohnemann, Matthias Groemping, Norbert Mnich, Thomas Mertz
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Publication number: 20150045577Abstract: The present invention relates to a process for hydrolysis of acetone cyanohydrin (ACH) by means of sulphuric acid within the ACH sulpho process for preparation of methacrylic acid (MAA) or methyl methacrylate (MMA).Type: ApplicationFiled: March 6, 2013Publication date: February 12, 2015Applicant: Evonik Roehm GmbHInventors: Arndt Selbach, Lorenza Sartorelli, Andreas Perl, Joachim Deinken, Stefanie Sohnemann, Norbert Mnich, Matthias Groemping, Udo Gropp, Thomas Mertz
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Patent number: 8802020Abstract: A reactor for preparing hydrogen cyanide by the Andrussow process is provided. The reactor comprises at least one gas inlet which opens into a gas inlet region, an outlet for the reaction products and a catalyst, wherein at least one mixing element and at least one gas-permeable intermediate layer are within the reactor between the gas inlet region and the catalyst. The mixing element is arranged between the gas inlet region and the gas-permeable intermediate layer. A process for preparing HCN, in the reactor is also provided.Type: GrantFiled: May 9, 2008Date of Patent: August 12, 2014Assignee: Evonik Röhm GmbHInventors: Thomas Schaefer, Robert Weber, Udo Gropp, Thomas Mertz
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Patent number: 8586779Abstract: The present invention relates in general terms to a process for preparing alkyl methacrylates, comprising as steps: providing an acetone cyanohydrin by a process according to one of the preceding claims; contacting the acetone cyanohydrin with an inorganic acid to obtain a methacrylamide; contacting the methacrylamide with an alcohol in the presence of an inorganic acid in a reactor to obtain an alkyl methacrylate; continuously discharging at least a portion of the alkyl methacrylate from the reactor into a distillation column as a vapor stream; the discharge being effected by feeding a discharge stream comprising steam into the reactor, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable by the process according to the invention in chemical products, and to chemical products based on alkyl methacrylates obtainable by the process according to the invention.Type: GrantFiled: August 31, 2007Date of Patent: November 19, 2013Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Patent number: 8575388Abstract: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.Type: GrantFiled: January 13, 2009Date of Patent: November 5, 2013Assignee: Evonik Roehm GmbHInventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
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Publication number: 20130211140Abstract: The present invention relates to an apparatus for metering flowable media or gases, and to the use thereof.Type: ApplicationFiled: March 15, 2013Publication date: August 15, 2013Inventors: Lorenza SARTORELLI, Andreas Perl, Udo Gropp, Arndt Selbach, Stefanie Sohnemann, Matthias Groemping, Norbert Mnich, Thomas Mertz
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Patent number: 8389762Abstract: The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator. The present invention further describes a system for performing the process according to the invention.Type: GrantFiled: January 13, 2009Date of Patent: March 5, 2013Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
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Patent number: 8334399Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture by flowing it through a cooling region of a cooler, the cooler including one cooling element or at least two cooling elements; C.Type: GrantFiled: August 31, 2007Date of Patent: December 18, 2012Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Patent number: 8324424Abstract: The invention relates in general terms to a process for preparing to a process for purifying an alkyl methacrylate, comprising the steps of: A. providing an alkyl methacrylate with an impurity: B. adsorbing at least some of the impurity onto a purifying solid to obtain an ultrapure alkyl methacrylate, to a process for preparing an ultrapure alkyl methacrylate, to an apparatus for preparing alkyl methacrylates, to a process for preparing a polymer based at least partly on alkyl methacrylates, to the use of an alkyl methacrylate obtained according to the invention in chemical products, and to chemical products comprising an alkyl methacrylate obtained according to the invention.Type: GrantFiled: August 31, 2007Date of Patent: December 4, 2012Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Patent number: 8143434Abstract: The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps: A. contacting acetone and hydrocyanic acid in a reactor to give a reaction mixture, the reaction mixture being circulated, to obtain acetone cyanohydrin; B. cooling at least some of the reaction mixture; C. discharging at least a portion of the acetone cyanohydrin obtained from the reactor; D. continuously distilling the discharged acetone cyanohydrin obtained to obtain an acetone cyanohydrin bottom product and an acetone top product in a distillation column; E. recycling at least a portion of the acetone top product into step A, the acetone top product being kept at less than 60° C.Type: GrantFiled: August 31, 2007Date of Patent: March 27, 2012Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Patent number: 8129559Abstract: The invention relates to a process for preparing acetone cyanohydrin and to a process for preparing alkyl methacrylates, in which an acetone cyanohydrin as can be prepared in accordance with the present invention is used.Type: GrantFiled: August 31, 2007Date of Patent: March 6, 2012Assignee: Evonik Röhm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
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Publication number: 20120010430Abstract: The present invention relates to an apparatus for metering flowable media or gases, and to the use thereof.Type: ApplicationFiled: March 26, 2010Publication date: January 12, 2012Applicant: Evonik Roehm GmbHInventors: Lorenza Sartorelli, Andreas Perl, Udo Gropp, Arndt Selbach, Stefanie Sohnemann, Matthias Groemping, Norbert Mnich, Thomas Mertz
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Publication number: 20120004460Abstract: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.Type: ApplicationFiled: January 13, 2009Publication date: January 5, 2012Applicant: Evonik Roehm GmbHInventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
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Publication number: 20110171101Abstract: The present invention relates to a reactor (1) for preparing hydrogen cyanide by the Andrussow process, comprising a reactor vessel (2), at least one gas inlet (3) which opens into a gas inlet region (4), an outlet for the reaction products (5) and a catalyst (6), wherein at least one mixing element (7) and at least one gas-permeable intermediate layer (8) are provided within the reactor vessel (2) between the gas inlet region (4) and the catalyst (6), the mixing element (7) being arranged between the gas inlet region (4) and the gas-permeable intermediate layer (8). The present invention further relates to a process for preparing HCN, in which an inventive reactor is used.Type: ApplicationFiled: May 9, 2008Publication date: July 14, 2011Applicant: Evonik Roehm GmbHInventors: Thomas Schaefer, Robert Weber, Udo Gropp, Thomas Mertz
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Publication number: 20100331572Abstract: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.Type: ApplicationFiled: January 3, 2009Publication date: December 30, 2010Applicant: Evonik Roehm GmbHInventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
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Publication number: 20100314239Abstract: The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator. The present invention further describes a system for performing the process according to the invention.Type: ApplicationFiled: January 13, 2009Publication date: December 16, 2010Applicant: EVONIK ROEHM GMBHInventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
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Patent number: 7723543Abstract: The invention relates to a method for the continuous production of alkyl amino acryl amides by reacting alkyl acrylates with high-boiling amines. A specific preparation technique is used in order to achieve hitherto unobtainable product qualities. Very high spatial, temporal and overall yields can also be obtained.Type: GrantFiled: November 18, 2005Date of Patent: May 25, 2010Assignee: Evonik Roehm GmbHInventors: Volker Schleep, Thomas Mertz
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Publication number: 20100076214Abstract: The invention relates to a process for preparing acetone cyanohydrin and to a process for preparing alkyl methacrylates, in which an acetone cyanohydrin as can be prepared in accordance with the present invention is used.Type: ApplicationFiled: August 31, 2007Publication date: March 25, 2010Applicant: Evonik Roehm GmbHInventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz