Patents by Inventor Pieter Ooms
Pieter Ooms 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).
-
Patent number: 9475751Abstract: The present invention relates to a continuous process for producing lower dialkyl carbonates as a main product and alkylene glycol as a by-product by transesterification of a cyclic alkylene carbonate (e.g. ethylene or propylene carbonate) with lower alkyl alcohols in the presence of a catalyst and also the necessary purification of the dialkyl carbonate in a subsequent process step. For optimization of the economic efficiency and energy efficiency of the process, additional devices are used for intermediate heating of the internal liquid streams within the apparatus.Type: GrantFiled: November 19, 2013Date of Patent: October 25, 2016Assignee: Covestro Deutschland AGInventors: Pieter Ooms, Friedhelm Risse, Andre Düx, Carsten Buchaly, Thomas Pancur, Arthur Susanto, Georg Ronge, Johan Vanden Eynde, Wim Wuytack
-
Patent number: 9175135Abstract: The present invention relates to a process for the continuous preparation of diaryl carbonates from phosgene and at least one monohydroxy compound (monophenol) in the presence of catalysts, and also the use thereof for preparing polycarbonates. The hydrogen chloride formed in the reaction is converted by thermal oxidation into chlorine, with the chlorine being recirculated to the preparation of phosgene. In particular, the process comprises utilization of the hydrogen chloride formed for the process for preparing diphenyl carbonate (DPC process).Type: GrantFiled: March 25, 2011Date of Patent: November 3, 2015Assignee: Bayer MaterialScience AGInventors: Pieter Ooms, Andreas Bulan
-
Publication number: 20150299097Abstract: The present invention relates to a continuous process for producing lower dialkyl carbonates as a main product and alkylene glycol as a by-product by transesterification of a cyclic alkylene carbonate (e.g. ethylene or propylene carbonate) with lower alkyl alcohols in the presence of a catalyst and also the necessary purification of the dialkyl carbonate in a subsequent process step. For optimization of the economic efficiency and energy efficiency of the process, additional devices are used for intermediate heating of the internal liquid streams within the apparatus.Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Inventors: Pieter OOMS, Friedhelm RISSE, Andre DÜX, Carsten BUCHALY, Thomas PANCUR, Arthur SUSANTO, Georg RONGE, Johan VANDEN EYNDE, Wim WUYTACK
-
Patent number: 9150490Abstract: The present invention relates to a process for the continuous preparation of diaryl carbonates from phosgene and at least one monohydroxy compound (monophenol) in the presence of catalysts, and also the use thereof for preparing polycarbonates. The hydrogen chloride formed in the reaction is converted by electrochemical oxidation into chlorine, with the chlorine being recirculated to the preparation of phosgene. In particular, the process comprises utilization of the hydrogen chloride formed for the process for preparing diphenyl carbonate (DPC process).Type: GrantFiled: March 29, 2011Date of Patent: October 6, 2015Assignee: Bayer MaterialScience AGInventors: Pieter Ooms, Andreas Bulan
-
Patent number: 9040732Abstract: The invention provides a process for preparing diaryl carbonates from dialkyl carbonates and aromatic hydroxyl compounds using at least two reaction columns, a process section for recovering the dialkyl carbonate used in the reaction and for removing the alcohol of reaction, one or more process steps for removing the by-products obtained in the process which have a boiling point between that of the dialkyl carbonate and that of the alkyl aryl carbonate formed during the preparation of the diaryl carbonate, and a process step for further purification of the diaryl carbonate obtained from the reaction columns.Type: GrantFiled: June 12, 2009Date of Patent: May 26, 2015Assignee: Bayer MaterialScience AGInventors: Andre Düx, Guenter Olf, Kaspar Hallenberger, Georg Ronge, Ricarda Leiberich, Johan Vanden Eynde, Wim Wuytack, Pieter Ooms, Johann Rechner
-
Patent number: 8987446Abstract: The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.Type: GrantFiled: December 9, 2010Date of Patent: March 24, 2015Assignee: Bayer Intellectual Property GmbHInventors: Christoph Gürtler, Thomas Ernst Müller, Pieter Ooms, Johann Rechner, Friedhelm Risse, Angelina Prokofieva, Franco Doro, Burkhard Köhler, Walter Leitner, Aurel Wolf
-
Patent number: 8952189Abstract: The invention relates to a process for preparing diaryl carbonates and/or alkyl aryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using a reactive dividing wall column.Type: GrantFiled: April 7, 2010Date of Patent: February 10, 2015Assignee: Bayer MaterialScience AGInventors: Andre Düx, Helmut Mothes, Kaspar Hallenberger, Georg Ronge, Rafael Warsitz, Pieter Ooms, Johann Rechner
-
Patent number: 8882984Abstract: A process for preparing diaryl carbonate and utilizing at least part of the process wastewater by increasing the concentration of the wastewater phases containing sodium chloride for the electrolysis by means of osmotic membrane distillation with simultaneous dilution of the sodium hydroxide solution obtained from the electrolysis for the diaryl carbonate production process (diphenyl carbonate process) is described.Type: GrantFiled: April 13, 2010Date of Patent: November 11, 2014Assignee: Bayer MaerialScience AGInventors: Pieter Ooms, Andreas Bulan, Johann Rechner, Rainer Weber, Michael Traving, Marc Buts, Johan Vanden Eynde
-
Patent number: 8648163Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.Type: GrantFiled: February 11, 2013Date of Patent: February 11, 2014Assignees: FRX Polymers, Inc., Bayer Material Science AGInventors: Dieter Freitag, Pin Go, Lawino Kagumba, Stephan Konrad, Helmut-Werner Heuer, Berit Krauter, Pieter Ooms, Michael Prein, Johann Rechner
-
Patent number: 8552214Abstract: The present invention relates to a continuous process for preparing lower dialkyl carbonates as main product and alkylene glycol as by-product by transesterification of a cyclic alkylene carbonate (e.g. ethylene carbonate or propylene carbonate) with lower alkyl alcohols in the presence of a catalyst and also the required purification of the dialkyl carbonate in a subsequent process step. To optimize the economics and energy efficiency of the process, additional devices are used for intermediate heating of the liquid streams in the apparatus.Type: GrantFiled: February 1, 2011Date of Patent: October 8, 2013Assignee: Bayer MaterialScience AGInventors: Pieter Ooms, Friedhelm Risse, Andre Düx, Carsten Buchaly, Thomas Pancur, Arthur Susanto, Georg Ronge, Johan Vanden Eynde, Wim Wuytack
-
Patent number: 8518231Abstract: The invention relates to a process for production of diaryl carbonate combined with the electrolysis of the resultant alkali metal chloride-containing process wastewater. The process according to the invention makes possible, inter alia, improved utilization in electrolysis of the alkali metal chloride-containing solution obtained in the production of diaryl carbonate.Type: GrantFiled: March 1, 2011Date of Patent: August 27, 2013Assignee: Bayer Intellectual Property GmbHInventors: Pieter Ooms, Andreas Bulan, Johann Rechner, Rainer Weber, Marc Buts, Johan Vanden Eynde
-
Patent number: 8389664Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.Type: GrantFiled: September 16, 2011Date of Patent: March 5, 2013Assignees: FRX Polymers, Inc., Bayer Material Science AGInventors: Dieter Freitag, Pin Go, Lawino Kagumba, Stephan Konrad, Helmut-Werner Heuer, Berit Krauter, Pieter Ooms, Michael Prein, Johann Rechner
-
Publication number: 20130018186Abstract: The invention relates to bimetallic complexes in which the ligand contains a salophen unit which complexes copper, manganese or cobalt and a phenanthroline unit which complexes palladium and the two systems are linked by a continuous conjugated system. The invention further relates to the use of these bimetallic complexes as catalysts for the oxidative carbonylation of aromatic hydroxy compounds to form diaryl carbonates, a process for preparing diaryl carbonates using the bimetallic complex as catalyst and also diaryl carbonates prepared by oxidative carbonylation of aromatic hydroxy compounds using the bimetallic complexes of the invention as catalysts.Type: ApplicationFiled: December 9, 2010Publication date: January 17, 2013Applicant: Bayer Intellectual Property GmbHInventors: Christoph Gürtler, Thomas Ernst Müller, Pieter Ooms, Johann Rechner, Friedhelm Risse, Angelina Prokofieva, Franco Doro, Burkhard Köhler, Walter Leitner, Aurel Wolf
-
Patent number: 8338631Abstract: The present invention relates to a continuous process for preparing lower dialkyl carbonates as main product and alkylene glycol as by-product by catalyzed transesterification of a cyclic alkylene carbonate (e.g. ethylene carbonate or propylene carbonate) with lower alcohols, where the reaction of the alkylene carbonate is carried out with an alcohol containing dialkyl carbonate in countercurrent, characterized in that introduction of a stream containing at least 99.5% by weight of alcohol takes place below the point of introduction for the alcohol containing dialkyl carbonate in a particular spacing ratio between the abovementioned points of introduction.Type: GrantFiled: June 25, 2010Date of Patent: December 25, 2012Assignee: Bayer MaterialScience AGInventors: Friedhelm Risse, Pieter Ooms, Andre Düx, Marcus Grünewald, Thomas Pancur, Arthur Susanto, Georg Ronge, Johan Vanden Eynde, Wim Wuytack
-
Patent number: 8304509Abstract: The present invention relates to a process for continuously preparing diaryl carbonates from dialkyl carbonates and at least one monohydroxyl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates. The alkylene glycol obtained in the preparation of the dialkyl carbonate used is recycled by oxidative carbonylation with carbon monoxide in the presence of a catalyst to give the cyclic alkylene carbonate which is in turn converted to the dialkyl carbonate. More particularly, the process utilizes the alkylene glycol obtained for the diphenyl carbonate preparation process (DPC process).Type: GrantFiled: October 3, 2011Date of Patent: November 6, 2012Assignee: Bayer Intellectual Property GmbHInventors: Christoph Gürtler, Thomas Ernst Müller, Pieter Ooms, Friedhelm Risse, Johann Rechner, Franco Doro, Angelina Prokofieva
-
Publication number: 20120130110Abstract: The present invention relates to a process comprising purifying dialkyl carbonates of the formula (II) in one or more columns in the presence of an alkylene oxide of the formula (V) and of an alkyl alcohol of the formula (IV) wherein R1 and R2 represent, independently of one another, linear or branched, substituted or unsubstituted C1-C6-alkyl, R3 and R4 represent, independently of one another, hydrogen, substituted or unsubstituted C1-C4-alkyl, substituted or unsubstituted C2-C4-alkenyl or substituted or unsubstituted C6-C12-aryl, and R5 represents a straight-chain or branched C1-C4-alkyl; and wherein the mean residence time of the dialkyl carbonate in the column(s) is from 0.3 h to 3 h.Type: ApplicationFiled: October 25, 2011Publication date: May 24, 2012Applicant: Bayer MaterialScience AGInventors: Pieter Ooms, Friedhelm Risse, Andre Düx, Carsten Buchaly, Thomas Pancur, Arthur Susanto, Georg Ronge, Johan Vanden Eynde, Wim Wuytack
-
Patent number: 8173762Abstract: A combined process for the preparation of polycarbonate from bisphenols and diaryl carbonates, the monophenol liberated being reacted again for the preparation of the diaryl carbonate and the alkali metal halide forming in the preparation of the diaryl carbonate being converted by electrochemical oxidation, optionally over a gas diffusion electrode, into chlorine and alkali hydroxide solution, the chlorine being recycled into the preparation of the phosgene and the alkali hydroxide solution being recycled into the preparation of the diaryl carbonate.Type: GrantFiled: July 2, 2010Date of Patent: May 8, 2012Assignee: Bayer MaterialScience AGInventors: Pieter Ooms, Andreas Bulan, Johann Rechner, Rainer Weber, Marc Buts, Johan Vanden Eynde
-
Publication number: 20120101247Abstract: The present invention relates to a process for continuously preparing diaryl carbonates from dialkyl carbonates and at least one monohydroxyl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates. The alkylene glycol obtained in the preparation of the dialkyl carbonate used is recycled by oxidative carbonylation with carbon monoxide in the presence of a catalyst to give the cyclic alkylene carbonate which is in turn converted to the dialkyl carbonate. More particularly, the process utilizes the alkylene glycol obtained for the diphenyl carbonate preparation process (DPC process).Type: ApplicationFiled: October 3, 2011Publication date: April 26, 2012Applicant: Bayer MaterialScience AGInventors: Christoph Gürtler, Thomas Ernst Müller, Pieter Ooms, Friedhelm Risse, Johann Rechner, Franco Doro, Angelina Prokofieva
-
Publication number: 20120101293Abstract: The present invention relates to a continuous process for purifying a dialkyl carbonate/alkyl alcohol mixture in the preparation of dialkyl carbonate by catalysed transesterification of a cyclic alkylene carbonate (e.g. ethylene carbonate or propylene carbonate) with alkyl alcohols. For the increase in the product quality of the dialkyl carbonate, the selection of the operating parameters of the dialkyl carbonate purification column are crucial, in order to reduce the formation of unwanted by-products such as alkoxy alcohols and aliphatic carbonate ethers.Type: ApplicationFiled: October 25, 2011Publication date: April 26, 2012Applicant: Bayer MaterialScience AGInventors: Pieter Ooms, Friedhelm Risse, Andre Düx, Carsten Buchaly, Thomas Pancur, Arthur Susanto, Georg Ronge, Johan Vanden Eynde, Wim Wuytack
-
Publication number: 20120068115Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicants: BAYER MATERIAL SCIENCE AG, FRX POLYMERS, INC.Inventors: Dieter FREITAG, Pin GO, Lawino KAGUMBA, Stephan KONRAD, Helmut-Werner HEUER, Berit KRAUTER, Pieter OOMS, Michael PREIN, Johann RECHNER