Patents by Inventor Rolf Pinkos

Rolf Pinkos 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).

  • METHOD FOR PURIFYING CYCLIC KETONES
    Publication number: 20090326277
    Abstract: The present invention relates to a process for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms, which comprises thermal treatment of the composition (I) with at least one acid and further purification by means of a process selected from the group consisting of distillation, extraction and crystallization, Furthermore, the present invention relates to a process for preparing cyclododecanone, which comprises such a purification, and the use of at least one acid for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms by thermal treatment of the composition (I) with the acid.
    Type: Application
    Filed: June 27, 2007
    Publication date: December 31, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Gerd Tebben, Alexander Hauk, Christian Müller, Harald Rust
  • METHOD FOR THE PRODUCTION OF CYCLIC KETONES
    Publication number: 20090326276
    Abstract: The present invention relates to a process for preparing a cyclic ketone having from 7 to 16 carbon atoms, which comprises at least the steps (a) oxidation of a composition (I) comprising at least one cyclic alkene which has from 7 to 16 carbon atoms and at least one C—C double bond by means of dinitrogen monoxide to give a composition (A), (b) treatment of the composition (A) with at least one base to give a composition (B), (c) hydrogenation of the composition (B) in the presence of at least one catalyst to give a composition (C), (d) purification of the composition (C), comprising at least the steps (di) thermal treatment of the composition (C) with at least one acid or at least one catalyst comprising at least one transition metal, (dii) further purification by a method selected from the group consisting of distillation, extraction and crystallization.
    Type: Application
    Filed: June 27, 2007
    Publication date: December 31, 2009
    Applicant: BASF SE
    Inventors: Joaquim Henrique Teles, Beatrice Rößler, Rolf Pinkos, Gerd Tebben, Christian Müller, Harald Rust
  • PROCESS FOR WORKING UP SOLVENT-CONTAINING HYDROGENATION PRODUCT MIXTURES
    Publication number: 20090314992
    Abstract: The present invention relates to a process for separating off solvents from solvent-comprising hydrogenation outputs from a catalytic hydrogenation process, which comprise at least one water-soluble hydrogenation product having at least one alcohol, lactone, ether, lactam or amino group in a solvent which is immiscible or not completely miscible with water and has a boiling point below 100° C., wherein water is added to the hydrogenation output, the solvent-comprising phase is separated off and recirculated to the hydrogenation.
    Type: Application
    Filed: July 16, 2007
    Publication date: December 24, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Jens Heimann, Hans-Martin Polka, Heiko Urtel, Gunther Windecker
  • METHOD FOR PURIFYING CYCLIC KETONES
    Publication number: 20090318733
    Abstract: The present invention relates to a process for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms, which comprises thermal treatment of the composition (I) with a catalyst comprising at least one transition metal and further purification by means of a process selected from the group consisting of distillation, extraction and crystallization. Furthermore, the present invention relates to a process for preparing cyclododecanone, which comprises such a purification, and the use of at least one catalyst comprising at least one transition metal for purifying a composition (I) comprising at least one cyclic ketone having from 7 to 16 carbon atoms by thermal treatment of the composition (I) with a catalyst comprising at least one transition metal.
    Type: Application
    Filed: June 27, 2007
    Publication date: December 24, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Gerd Tebben, Christian Müller, Harald Rust
  • METHOD FOR THE PRODUCTION OF CYCLIC KETONES
    Publication number: 20090281357
    Abstract: The present invention relates to a process for preparing a cyclic ketone having from 7 to 16 carbon atoms, which comprises at least the steps (a) oxidation of a composition (I) comprising at least one cyclic olefin which has from 7 to 16 carbon atoms and at least one C—C double bond by means of dinitrogen monoxide to give a composition (A), (b) treatment of the composition (A) with at least one base to give a composition (B).
    Type: Application
    Filed: June 27, 2007
    Publication date: November 12, 2009
    Applicant: BASF SE
    Inventors: Joaquim Henrique Teles, Beatrice Rössler, Rolf Pinkos, Gerd Tebben, Christian Müller
  • Method for the separation of polymeric by-products from 1,4-butynediol
    Patent number: 7605292
    Abstract: The present invention relates to a process for purifying 1,4-butynediol, which comprises compressing 1,4-butynediol to from 50 to 1500 bar, depressurizing it, waiting for phase separation to occur after depressurization and separating off the bottom phase, and a process for the hydrogenation of 1,4-butynediol to 1,4-butenediol and 1,4-butanediol using the purified 1,4-butynediol.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: October 20, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schaefer, Thomas Danner
  • Method for the distillative processing of tetrahydrofuran
    Patent number: 7598405
    Abstract: The present invention provides a process for distillatively purifying tetrahydrofuran in the presence of a polar solvent.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: October 6, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunther Windecker, Alexander Weck, Markus Roesch, Michael Steiniger, Rolf Pinkos, Dany Vanden Hautte
  • PROCESS FOR THE PREPARATION OF CYCLODODECANONE
    Publication number: 20090227815
    Abstract: A process for preparing cyclododecanone by reacting cyclododecene with dinitrogen monoxide, comprising in particular steps (I) and (II): (I) preparing cyclododecene by partially hydrogenating cyclododecatriene; (II) reacting cyclododecene obtained in (I) with dinitrogen monoxide to obtain cyclododecanone.
    Type: Application
    Filed: May 22, 2009
    Publication date: September 10, 2009
    Applicant: BASF Aktiengesellschaft Patents, Trademarks and Licenses
    Inventors: Joaquim Henrique Teles, Beatrice Rossler, Rolf Pinkos, Thomas Genger, Thomas Preiss
  • Method for the production of tetrahydrofuran copolymers
    Patent number: 7586011
    Abstract: The present invention provides a process for preparing polyoxyalkylene glycols of a certain molecular weight in one stage by copolymerizing tetrahydrofuran and alpha,omega-diols as the comonomer in the presence of a heteropolyacid and of a hydrocarbon, by distilling off a mixture of water and this hydrocarbon from the copolymerization, which comprises terminating the polymerization when this molecular weight is attained by adding water, comonomer, butanediol or butanediol-water mixtures.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: September 8, 2009
    Assignee: BASF SE
    Inventors: Martin Haubner, Rolf Pinkos
  • METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURANE OR TETRAHYDROFURANE COPOLYMERS
    Publication number: 20090215971
    Abstract: The present invention relates to a process for preparing polytetrahydrofuran or tetrahydrofuran copolymers by polymerization of tetrahydrofuran in the presence of a telogen and/or a comonomer over a fixed bed of an acid catalyst, in which the temperature of the polymerization mixture increases in the direction of flow through the catalyst bed.
    Type: Application
    Filed: May 25, 2007
    Publication date: August 27, 2009
    Applicant: BASF SE
    Inventors: Tobias Wabnitz, Stephan Hatscher, Stefan Käshammer, Rolf Pinkos
  • Method for the separation of polymeric by-products from 1,4-butynediol
    Patent number: 7572941
    Abstract: The present invention relates to processes for making 1,4-butanediol, 1,4-butenediol, or a mixture thereof by processing 1,4-butynediol in a dynamic mixing apparatus in an inert gas atmosphere at from 25 to 150° C. at a shear rate in the radial gap between rotor and stator of the mixing apparatus of more than 100 000 sec?1; phase separating the processed 1,4-butynediol at a temperature of from 25 to 150° C.; removing a bottom phase to obtain purified 1,4-butynediol; and reacting the purified 1,4-butynediol with hydrogen in the presence of a catalyst.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: August 11, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schaefer
  • METHOD FOR THE SEPARATION OF POLYMERIC BY-PRODUCTS FROM 1,4-BUTYNEDIOL
    Publication number: 20090187050
    Abstract: The present invention relates to a process for purifying 1,4-butynediol, which comprises compressing 1,4-butynediol to from 50 to 1500 bar, depressurizing it, waiting for phase separation to occur after depressurization and separating off the bottom phase, and a process for the hydrogenation of 1,4-butynediol to 1,4-butenediol and 1,4-butanediol using the purified 1,4-butynediol.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 23, 2009
    Applicant: BASF SE
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schafer, Thomas Danner
  • PROCESS FOR THE PREPARATION OF AN N-ALKYL LACTAM WITH IMPROVED COLOUR QUALITY
    Publication number: 20090182139
    Abstract: A process for preparing an N-alkyllactam with improved color quality, wherein from 0.01 to 10% by weight of a C1-10-alcohol or a compound which releases from 0.01 to 10% by weight of a C1-10-alcohol is added to the N-alkyllactam. A mixture comprising at least 99.0% by weight of an N-alkyllactam and in the range from 100 to 5000 ppm by weight of a C1-10-alcohol or of an acetal, aminal or of an orthoester which releases in the range from 100 to 5000 ppm by weight of a C1-10-alcohol.
    Type: Application
    Filed: March 29, 2007
    Publication date: July 16, 2009
    Applicant: BASF SE
    Inventors: Tobias Wabnitz, Rolf Pinkos, Karl Ott
  • Method for the polymerization of cyclic ethers
    Patent number: 7544766
    Abstract: The present invention relates to a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer and of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: June 9, 2009
    Assignee: BASF SE
    Inventors: Stephan Schlitter, Martin Haubner, Peter Zehner, Michael Hesse, Alexander Weck, Rolf Pinkos, Thomas Graβler
  • METHOD FOR PREVENTING FUMARIC ACID DEPOSITS IN THE PRODUCTION OF MALEIC ACID ANHYDRIDE
    Publication number: 20090143601
    Abstract: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps: a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent, b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent, the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).
    Type: Application
    Filed: May 16, 2007
    Publication date: June 4, 2009
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Gerd Kaibel, Ellen Dahlhoff, Gunther Windecker, Jens Heimann
  • METHOD OF PRODUCING A CARBOXYLIC ALKYL ESTER
    Publication number: 20090137825
    Abstract: The present invention relates to a novel process for preparing alkyl polycarboxylates from an aqueous solution of an ammonium salt of the polycarboxylic acid by reactive distillation, and to a process for hydrogenating the alkyl carboxylates prepared in this way.
    Type: Application
    Filed: April 4, 2007
    Publication date: May 28, 2009
    Inventors: Christophe Bauduin, Wolfgang Fischer, Rolf Pinkos, Edzard Scholten
  • Method for producing alkyl-aromatic compounds by direct alkylation of aromatic hydrocarbons with alkanes
    Publication number: 20090134066
    Abstract: The present invention relates to a process for preparing alkylaromatics by reacting aromatic compounds with C1-C14-alkanes in the presence of a heterogeneous catalyst, which comprises using as the catalyst a crystalline, micro- and/or mesoporous solid comprising silicon and at least one father element selected from the group consisting of the transition metals and the main group elements gallium and tin, and activating said catalysts by a reducing pretreatment. Furthermore, the present invention relates to a process for preparing alkylarylsulfonates by sulfonating and neutralizing the alkyl aromatic compounds.
    Type: Application
    Filed: August 4, 2005
    Publication date: May 28, 2009
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Nils Bottke, Michael Triller, Ulrich Muller, Rolf Pinkos, Thomas Heidemann
  • METHOD FOR THE SEPARATION OF POLYMERIC BY-PRODUCTS FROM 1,4-BUTYNEDIOL
    Publication number: 20090137849
    Abstract: The present invention relates to processes for making 1,4-butanediol, 1,4-butenediol, or a mixture thereof by processing 1,4-butynediol in a dynamic mixing apparatus in an inert gas atmosphere at from 25 to 150° C. at a shear rate in the radial gap between rotor and stator of the mixing apparatus of more than 100 000 sec?1; phase separating the processed 1,4-butynediol at a temperature of from 25 to 150° C.; removing a bottom phase to obtain purified 1,4-butynediol; and reacting the purified 1,4-butynediol with hydrogen in the presence of a catalyst.
    Type: Application
    Filed: January 27, 2009
    Publication date: May 28, 2009
    Applicant: BASF SE
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schafer
  • Method for the separation of polymeric by-products from 1,4-butynediol
    Patent number: 7538254
    Abstract: The present invention relates to a process for purifying 1,4-butynediol, which comprises compressing 1,4-butynediol to from 50 to 1500 bar, depressurizing it, waiting for phase separation to occur after depressurization and separating off the bottom phase, and a process for the hydrogenation of 1,4-butynediol to 1,4-butenediol and 1,4-butanediol using the purified 1,4-butynediol.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: May 26, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schaefer, Thomas Danner
  • Method for the separation of polymeric by-products from 1,4-butynediol
    Patent number: 7524996
    Abstract: The present invention relates to a process for purifying 1,4-butynediol, which comprises processing 1,4-butynediol in a dynamic mixing apparatus in an inert gas atmosphere at from 25 to 150° C. at a shear rate in the radial gap between rotor and stator of the mixing apparatus of more than 100 000 sec?1, awaiting phase separation at temperatures of from 25 to 150° C. and separating off the bottom phase, and a process for the hydrogenation of 1,4-butynediol to 1,4-butenediol and 1,4-butanediol using the purified 1,4-butynediol.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: April 28, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Erich Lorenz, Rolf Pinkos, Michael Steiniger, Gerd Schaefer