Patents by Inventor Filip Nevejans
Filip Nevejans 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: 10435354Abstract: The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.Type: GrantFiled: August 7, 2018Date of Patent: October 8, 2019Assignee: BASF SEInventors: Manfred Heilig, Thomas Schulz, Torsten Mattke, Filip Nevejans, Kai Thiele, Stefan Maixner
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Publication number: 20180346414Abstract: The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.Type: ApplicationFiled: August 7, 2018Publication date: December 6, 2018Applicant: BASF SEInventors: Manfred HEILIG, Thomas SCHULZ, Torsten MATTKE, Filip NEVEJANS, Kai THIELE, Stefan MAIXNER
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Patent number: 10093615Abstract: The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.Type: GrantFiled: April 21, 2015Date of Patent: October 9, 2018Assignee: BASF SEInventors: Manfred Heilig, Thomas Schulz, Torsten Mattke, Filip Nevejans, Kai Thiele, Stefan Maixner
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Publication number: 20170036997Abstract: The invention relates to a process for preparing isocyanates by reacting primary amines with phosgene in a solvent, where the solvent comprises a dialkyl carbonate.Type: ApplicationFiled: April 21, 2015Publication date: February 9, 2017Applicant: BASF SEInventors: Manfred HEILIG, Thomas SCHULZ, Torsten MATTKE, Filip NEVEJANS, Kai THIELE
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Patent number: 8821829Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in theType: GrantFiled: November 13, 2012Date of Patent: September 2, 2014Assignee: BASF AktiengesellschaftInventors: Gerhard Olbert, Torsten Mattke, Luc Vanderwaeren, Filip Nevejans, Jan Hammenecker
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Patent number: 8759585Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of: a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the predominant part of the acid with ammonia and/or aqueous ammonia solution, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) neutralizing the other part of the acid, present in the organic phase, with aqueous alkali metal hydroxide solution, e) separating the reaction mixture from step d) into an aqueous phase and an organic phase, f) treating the aqueous phase obtained in step c) or optionally the combined aqueous phases from steps c) and e) with at least one oxide or hydroxide of an alkaline earth metal, g) removing the ammonia obtained in step f).Type: GrantFiled: December 13, 2010Date of Patent: June 24, 2014Assignee: BASF SEInventors: Markus Siegert, Torsten Mattke, Tilmann Steinmetz, Hans-Juergen Pallasch, Filip Nevejans
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Patent number: 8546606Abstract: The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene, which comprises the steps a) mixing the amine with the phosgene, b) reacting the amine with the phosgene in a residence reactor and, if desired, c) transferring the output from the reactor of step b) into a distillation column, wherein the residence reactor in step b) is configured as a tube reactor.Type: GrantFiled: February 20, 2004Date of Patent: October 1, 2013Assignee: BASF AktiengesellschaftInventors: Andreas Brodhagen, Martin Sohn, Filip Nevejans, Eckhard Stroefer, Andreas Woelfert, Steffen Oehlenschlaeger
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Patent number: 8409539Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in theType: GrantFiled: February 12, 2003Date of Patent: April 2, 2013Assignee: BASF AktiengesellschaftInventors: Gerhard Olbert, Torsten Mattke, Luc Vanderwaeren, Filip Nevejans, Jan Hammenecker
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Publication number: 20130072717Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in theType: ApplicationFiled: November 13, 2012Publication date: March 21, 2013Inventors: Gerhard OLBERT, Torsten Mattke, Luc Vanderwaeren, Filip Nevejans, Jan Hammenecker
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Publication number: 20120232307Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of: a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the predominant part of the acid with ammonia and/or aqueous ammonia solution, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) neutralizing the other part of the acid, present in the organic phase, with aqueous alkali metal hydroxide solution, e) separating the reaction mixture from step d) into an aqueous phase and an organic phase, f) treating the aqueous phase obtained in step c) or optionally the combined aqueous phases from steps c) and e) with at least one oxide or hydroxide of an alkaline earth metal, g) removing the ammonia obtained in step f).Type: ApplicationFiled: December 13, 2010Publication date: September 13, 2012Applicant: BASF SEInventors: Markus Siegert, Torsten Mattke, Tilmann Steinmetz, Hans-Juergen Pallasch, Filip Nevejans
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Patent number: 7851648Abstract: The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.Type: GrantFiled: December 13, 2003Date of Patent: December 14, 2010Assignee: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch, Rene Leuthold, Andreas Brodhagen, Andreas Woelfert, Wolfgang Mackenroth, Markus Maurer
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Patent number: 7584629Abstract: The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.Type: GrantFiled: December 13, 2003Date of Patent: September 8, 2009Assignee: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch, Peter Van Den Abeel, Filip Deberdt, Jan D. Jacobs, Wolfgang Mackenroth
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Patent number: 7524405Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.Type: GrantFiled: December 13, 2003Date of Patent: April 28, 2009Assignee: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Juergen Pallasch, Peter Van Den Abeel, Filip Deberdt, Jan D. Jacobs, Wolfgang Mackenroth
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Publication number: 20060252960Abstract: The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.Type: ApplicationFiled: December 13, 2003Publication date: November 9, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Has-Juergen Pallasch, Rene Leuthold, Andreas Brodhagen, Andreas Woelfert, Wolfgang Mackenroth, Markus Maurer
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Publication number: 20060223966Abstract: The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene, which comprises the steps a) mixing the amine with the phosgene, b) reacting the amine with the phosgene in a residence reactor and, if desired, c) transferring the output from the reactor of step b) into a distillation column, wherein the residence reactor in step b) is configured as a tube reactor.Type: ApplicationFiled: February 20, 2004Publication date: October 5, 2006Applicant: BASF AktiengesellschaftInventors: Andreas Brodhagen, Martin Sohn, Filip Nevejans, Eckhard Stroefer, Andreas Wölfert, Steffen Oehlenschläger
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Publication number: 20060123842Abstract: The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.Type: ApplicationFiled: December 13, 2003Publication date: June 15, 2006Applicant: BASF AKTINEGESSELSCHAFTInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Peter Abeel, Filip Deberdt, Jan Jacobs, Wolfgang Mackenroth
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Publication number: 20060089507Abstract: The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.Type: ApplicationFiled: December 13, 2003Publication date: April 27, 2006Applicant: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Michael Sander, Hans Schwarz, Wolfgang Mackenroth
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Publication number: 20060011463Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.Type: ApplicationFiled: December 13, 2003Publication date: January 19, 2006Applicant: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Peter Van Den Abeel, Filip Deberdt, Jan Jacobs, Wolfgang Mackenroth
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Publication number: 20050118088Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in theType: ApplicationFiled: February 12, 2003Publication date: June 2, 2005Applicant: BASF AKTIENGESELLSCHAFTInventors: Gerhard Olbert, Torsten Mattke, Luc Vanderwaeren, Filip Nevejans
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Patent number: 6900348Abstract: A process is provided for preparing light-colored isocyanates which can be used for preparing urethane compounds, in particular polyurethanes, for example polyurethane foams.Type: GrantFiled: June 16, 2000Date of Patent: May 31, 2005Assignee: BASF AktiengesellschaftInventors: Martin Reif, Peter van den Abeel, Filip Nevejans, Hans Volkmar Schwarz, Ulrich Penzel, Volker Scharr