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 Producing Polyoxymethylene Dimethyl Ethers
    Publication number: 20070260094
    Abstract: A process for preparing polyoxymethylene dimethyl ether of the formula H3CO(CH2O)nCH3 where n=2-10, in which methylal and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, wherein the amount of water introduced into the reaction mixture by methylal, trioxane and/or the catalyst is <1% by weight based on the reaction mixture. Preferably, a fraction comprising polyoxymethylene dimethyl ether where n=3 and 4 is obtained by distillation from the reaction mixture, and methylal, trioxane and polyoxymethylene dimethyl ether where n<3 and optionally n>4 are recycled into the reaction.
    Type: Application
    Filed: October 19, 2005
    Publication date: November 8, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Heiner Schelling, Eckhard Stroefer, Rolf Pinkos, Andrea Haunert, Gerd-Dieter Tebben, Hans Hasse, Sergej Blagov
  • Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers
    Patent number: 7276573
    Abstract: The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polymerization reactor is started up using a mixture of polytetrahydrofuran, the mono- or diesters of polytetrahydrofuran and/or of the THF copolymers, tetrahydrofuran, any comonomer and at least one carboxylic acid and/or one carboxylic anhydride.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: October 2, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Pinkos, Achim Gerstlauer, Martin Haubner, Stephan Schlitter, Stefan Käshammer, Klaus-Peter Pfaff
  • Method for the production of defined mixtures of thf, bdo and gbl by gas phase hydrogenation
    Publication number: 20070135650
    Abstract: The present invention provides a process for variably preparing mixtures of optionally alkyl-substituted BDO, GBL and THF by two-stage hydrogenation in the gas phase of C4 dicarboxylic acids and/or derivatives thereof, which comprises a) in a first step in the gas phase, hydrogenating a gas stream of C4 dicarboxylic acids and/or derivatives thereof over a catalyst at a pressure of from 2 to 100 bar and a temperature of from 200° C. to 300° C.
    Type: Application
    Filed: December 4, 2004
    Publication date: June 14, 2007
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Markus Rosch, Rolf Pinkos, Michael Hesse, Stephan Schlitter, Henrik Junicke, Olga Schubert, Alexander Weck, Gunther Windecker
  • Catalyst extrudates based on copper oxide and their use for hydrogenating carbonyl compounds
    Publication number: 20070117719
    Abstract: The invention relates to a catalyst provided in the form of an extrudate, which contains 5 to 85% by weight of copper oxide and comprises, in the active material and as binders, the same oxidic carrier material. The invention also relates to the use of the catalyst for hydrogenating carbonyl compounds.
    Type: Application
    Filed: December 4, 2004
    Publication date: May 24, 2007
    Inventors: Stephan Schlitter, Olga Schubert, Michael Hesse, Sabine Borchers, Markus Rosch, Rolf Pinkos, Alexander Weck, Gunther Windecker
  • Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon
    Patent number: 7172989
    Abstract: In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated. It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: February 6, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf-Hartmuth Fischer, Rolf Pinkos, Stephan Andreas Schunk, Joachim Wulff-Döring, Frank Stein, Thomas Nöbel, Sylvia Huber
  • Method for the production of diaminodiarylmethanes
    Publication number: 20070010692
    Abstract: A process is described for preparing diaminodiarylmethanes comprising the steps a) reacting an aromatic amine with a methylene-donating agent in the presence of homogeneous acid catalysts, b) removing the homogeneous acid catalyst from the reaction product, c) working up and purifying the reaction product, which comprises removing the homogeneous acid catalyst from the reaction mixture by adsorption to a solid adsorbent.
    Type: Application
    Filed: June 25, 2004
    Publication date: January 11, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Ulrich Steinbrenner, Eckhard Stroefer, Martin Sohn, Veronika Quasching, Helmut Mohwald, Kai Thiele, Filip Deberdt, Jan Jacobs, Rolf Pinkos
  • Method for producing a ketone
    Publication number: 20060281952
    Abstract: A process for preparing a ketone, in particular cyclododecanone, by reacting cyclododecatriene with dinitrogen monoxide to obtain cyclododecadienone and hydrogenating the resulting cyclododecadienone, in particular to give cyclododecanone.
    Type: Application
    Filed: September 23, 2004
    Publication date: December 14, 2006
    Inventors: Joaquim Teles, Beatrice Rossler, Rolf Pinkos, Thomas Genger, Thomas Preiss
  • Method for the production of tetrahydrofuran copolymers
    Publication number: 20060264679
    Abstract: The present invention relates to a process for the single-stage preparation of polyoxyalkylene glycols by copolymerization of THF and neopentyl glycol in the presence of a heteropolyacid, wherein the total amount of all impurities of the formula (I) where R1 and R2 are each hydrogen when R3 is an oxyformyl or isopropionate radical, R1 is hydrogen and R2 is hydroxy when R3 is an isopropyl radical and R1 is hydrogen when R2 and R3 together form an —OCH2—C(CH3)—CH2— radical, in the neopentyl glycol is less than 1000 ppm.
    Type: Application
    Filed: March 30, 2004
    Publication date: November 23, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Martin Haubner, Rolf Pinkos, Stephan Sclitter
  • Method of producing tetrahydrofuran copolymers
    Publication number: 20060258837
    Abstract: The present invention relates to a process for the single-stage preparation of polyoxyalkylene glycols by copolymerization of THF and alpha, omega-diols in the presence of a heteropolyacid, wherein the content of organically bound nitrogen in the alpha, omega-diol is less than 15 ppm.
    Type: Application
    Filed: March 30, 2004
    Publication date: November 16, 2006
    Applicant: Basf Aktiengesellschaft
    Inventors: Martin Haubner, Rolf Pinkos
  • Method for producing tetrahydrofuran
    Patent number: 7098349
    Abstract: The invention relates to a process for the continuous preparation of THF by reaction of a 1,4-butanediol-containing reaction mixture over a heteropolyacid catalyst which has not been predried, wherein the reaction mixture comprises 2-(4-hydroxybutoxy)tetrahydrofuran.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: August 29, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Pinkos, Stefan Käshammer, Volkmar Menger, Martin Haubner, Peter Groll, Stephan Schlitter, Klaus-Peter Pfaff
  • Method for producing tetrahydrofurane copolymers
    Patent number: 7094933
    Abstract: The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: August 22, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Haubner, Rolf Pinkos, Alexander Weck
  • Catalyst and method for hydrogenating carbonyl compounds
    Patent number: 7084312
    Abstract: A process for the hydrogenation of an organic compound containing at least one carbonyl group comprises bringing the organic compound in the presence of hydrogen into contact with a shaped body which can be produced by a process in which (i) an oxidic material comprising copper oxide, zinc oxide and aluminum oxide is made available, (ii) pulverulent metallic copper or pulverulent cement or a mixture thereof is added to the oxidic material, and (iii) the mixture resulting from (ii) is shaped to form a shaped body.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: August 1, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Sylvia Huber, Michael Jolyon Sprague, Boris Breitscheidel, Joachim Wulff-Döring, Michael Hesse, Rolf Pinkos, Shelue Liang, Otto Kumberger, Marc Walter
  • METHOD FOR PRODUCING TETRAHYDROFURANE COPOLYMERS
    Publication number: 20060167321
    Abstract: The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.
    Type: Application
    Filed: July 30, 2003
    Publication date: July 27, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Martin Haubner, Rolf Pinkos, Alexander Weck
  • Method for the polymerization of cyclic ethers
    Publication number: 20060142543
    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: Application
    Filed: December 23, 2003
    Publication date: June 29, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Stephan Schlitter, Martin Haubner, Peter Zehner, Michael Hesse, Alexander Weck, Rolf Pinkos, Thomas Grabler
  • Method for producing tetrahydrofuran
    Publication number: 20060122365
    Abstract: The invention relates to a process for the continuous preparation of THF by reaction of a 1,4-butanediol-containing reaction mixture over a heteropolyacid catalyst which has not been predried, wherein the reaction mixture comprises 2-(4-hydroxybutoxy)tetrahydrofuran.
    Type: Application
    Filed: July 30, 2003
    Publication date: June 8, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Rolf Pinkos, Stefan Kashammer, Volkmar Menger, Martin Haubner, Peter Groll, Stephan Schlitter, Klaus-Peter Pfaff
  • Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers
    Publication number: 20060052551
    Abstract: The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polymerization reactor is started up using a mixture of polytetrahydrofuran, the mono- or diesters of polytetrahydrofuran and/or of the THF copolymers, tetrahydrofuran, any comonomer and at least one carboxylic acid and/or one carboxylic anhydride.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 9, 2006
    Inventors: Rolf Pinkos, Achim Gerstlauer, Martin Haubner, Stephan Sehlitter, Stefan Kashammer, Klaus Pfaff
  • Method for the production of tetrahydrofuran copolymers
    Publication number: 20060052550
    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: Application
    Filed: December 16, 2003
    Publication date: March 9, 2006
    Inventors: Martin Haubner, Rolf Pinkos
  • Catalyst, method for producing the same and method for the polymerisation of cyclic ethers on said catalyst
    Publication number: 20060046925
    Abstract: The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m2/g and an acid center density of at least 0.05 mmol/g for pKa values of from 1 to 6, to a process for preparing it and to a process for the polymerization of cyclic ethers over this catalyst.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 2, 2006
    Inventors: Stephan Schlitter, Martin Haubner, Michael Hesse, Stefan Kashammer, Rolf Pinkos, Christoph Sigwart
  • Method for producing gamma-butyrolactone
    Publication number: 20050215800
    Abstract: The present invention relates to a process for preparing unsubstituted or C1-C4-alkyl-substituted gamma-butyrolactone by catalytic hydrogenation of maleic acid and/or its derivatives in the presence of chromium-free catalyst comprising from 10 to 80% by weight of copper oxide and from 10 to 90% by weight of at least one catalyst support selected from the group consisting of silicon dioxide, titanium dioxide, hafnium dioxide, magnesium silicate, activated carbon, silicon carbide, zirconium dioxide and alpha-aluminum oxide.
    Type: Application
    Filed: April 25, 2003
    Publication date: September 29, 2005
    Inventors: Rolf Pinkos, Rolf-Hatmuth Fischer, Markus Rosch, Nils Bottke, Stephan Schlitter, Michael Hesse, Alexander Weck, Gunther Windecker, Gunnar Heydrich
  • Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon
    Publication number: 20050176972
    Abstract: In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated. It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 11, 2005
    Inventors: Rolf-Hartmuth Fischer, Rolf Pinkos, Stephan Schunk, Joachim Wulff-Doring, Frank Stein, Thomas Nobel, Sylvia Huber