Patents Assigned to BASF Aktiengesellschaft
  • Process for preparing methylenedianiline and methylenebis(phenyl isocyanate)
    Patent number: 6831192
    Abstract: A process for preparing methylenedianiline by reacting aniline with formaldehyde in the presence of acid catalysts comprising, in a semicontinuous process, introducing aniline with or without acid catalyst, feeding formaldehyde with or without acid catalyst through a mixing element into a circuit in which aniline with or without acid catalyst and with or without previously added formaldehyde is circulated and, after feeding in at least 50% of the total amount of formaldehyde to be fed in, heating the reaction mixture to a temperature above 75° C. In addition, the invention relates to a process for preparing polyisocyanates by phosgenation of amines obtainable in this manner and to the polyisocyanates obtainable by this process.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: December 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Eckhard Ströfer, Jan Jacobs, Wilfried Seyfert, Hans Volkmar Schwarz, Olaf Schweers, Volker Scharr, Ulrich Penzel
  • 3-(heterocyclyl)-substituted benzolpyrazols
    Patent number: 6831039
    Abstract: The invention relates to 3-(heterocyclyl)-substituted benzoylpyrazois of formula (I), wherein the variables have the following meanings: X is O, NH or N-alkyl; R1 is alkyl; R2, R3, R4, R5 are hydrogen, alkyl or alkyl halide; R6 is halogen, nitro, alkyl halide, alkoxy, halogenalkoxy, alkylthio, halogenalkylthio, alkylsulfonyl or halogenalkylsulfonyl; R7 is hydroxy, alkoxy, alkenyloxy, alkylsulfonyloxy, alkylcarboyloxy, alkylthiocarbonyloxy, phenylsulfonyloxy or phenylcarbonyloxy, and the phenyl radical can be substituted; R8, R9 are alkyl; R10 is hydrogen or alkyl; and R11 is hydrogen or alkyl; and to their agriculturally useable salts. The invention also relates to intermediate products and methods for producing the inventive compounds and to the use of these compounds or products containing them for combating undesirable plants.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: December 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulf Neidlein, Norbert Götz, Ernst Baumann, Wolfgang von Deyn, Steffen Kudis, Klaus Langemann, Guido Mayer, Ulf Misslitz, Matthias Witschel, Martina Otten, Karl-Otto Westphalen, Helmut Walter
  • Water-absorbing agent, method for the production and the utilization thereof
    Patent number: 6831122
    Abstract: Disclosed is a water absorbent comprising particles of a water absorbent polymer whose surface is associated with a water insoluble metal phosphate. It possesses an improved performance profile comprising high absorption capacity, improved fluid transportation performance and a faster swell rate.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: December 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Daniel, Ulrich Riegel, Matthias Weismantel
  • Method for the hydrogenation of maleic anhydride and related compounds in two serial reaction zones
    Patent number: 6831182
    Abstract: The present invention relates to a process for the gas-phase hydrogenation of C4-dicarboxylic acids and/or their derivatives over a catalyst based on copper oxide to give substituted or unsubstituted &ggr;-butyrolactone and/or tetrahydrofuran, which comprises, which a first reaction zone in which the C4-dicarboxylic acid and/or its derivatives is/are reacted to give a mixture comprising a substituted or unsubstituted &ggr;-butyrolactone as main product and a subsequent second reaction zone in which the substituted or unsubstituted &ggr;-butyrolactone present in the mixture from the first hydrogenation step is reacted at a temperature lower than the temperature in the first hydrogenation step to give substituted or unsubstituted tetrahydrofuran.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: December 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Holger Borchert, Stephan Schlitter, Rolf-Hartmuth Fischer, Markus Rösch, Frank Stein, Ralf-Thomas Rahn, Alexander Weck, Gerd Kaibel
  • Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu
    Publication number: 20040249183
    Abstract: Catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu are prepared by a process in which an intimate dry blend containing ammonium ions is prepared and said dry blend is subjected to a thermal treatment in an atmosphere having a low molecular oxygen content at elevated temperatures, a portion of the ammonium ions contained in the intimate dry blend being decomposed with liberation of ammonia and the oxygen content of the thermal treatment atmosphere being increased in the course of the thermal treatment.
    Type: Application
    Filed: May 7, 2004
    Publication date: December 9, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Hartmut Hibst, Wolfgang Jurgen Popel, Jochen Petzoldt, Klaus Joachim Muller-Engel
  • Thermal treatment of the precursor material of a catalytically active material
    Publication number: 20040245681
    Abstract: In a process for the thermal treatment of the precusor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Application
    Filed: May 12, 2004
    Publication date: December 9, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Jurgen Popel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Muller-Engel
  • Heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid
    Publication number: 20040249196
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid, the starting reaction gas mixture is oxidized over a fixed catalyst bed 1 which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.
    Type: Application
    Filed: March 19, 2004
    Publication date: December 9, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Jochen Petzoldt, Heiko Arnold, Wilhelm Ruppel, Klaus Joachim Muller-Engel
  • Hydrophilic open-cell, elastic foams with a melamine/formaldehyde resin base, production thereof and use thereof in hygiene products
    Patent number: 6828354
    Abstract: Hydrophilic open-celled resilient foams comprising melamine-formaldehyde resins, obtainable by (a) heating and crosslinking an aqueous solution or dispersion each containing at least a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a curing agent to form a foam, (b) then conditioning the foam at from 120 to 300° C. for from 1 to 180 minutes to remove volatiles, and (c) treating the foam during the conditioning or thereafter with at least one polymer containing primary and/or secondary amino groups and having a molar mass of not less than 300, are useful in hygiene articles to acquire, distribute and immobilize body fluids.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Hähnle, Horst Baumgartl, Norbert Herfert
  • Method for separating alkali metal ions from alkoxylates
    Patent number: 6827858
    Abstract: Alkali metal ions are separated off from alkoxylates containing alkali metal ions by a process comprising: a) dilution of the alkali metal-containing alkoxylate with an inert solvent, b) treatment of the alkali metal-containing solution of the alkoxylate with a cationic exchanger in order to obtain a substantially alkali metal-free solution of the alkoxylate, and c) removal of the solvent from the substantially alkali metal-free solution of the alkoxylate in order to obtain a substantially alkali metal-free and substantially solvent-free alkoxylate.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Bader, Hans-Heinrich Bechtolsheimer, Armin Brucker, Toni Dockner, Gabriele Iffland, Hans Klink, Stefan Martin, Jürgen Mohr, Hans-Martin Mugrauer
  • Method and device for carrying out the automated preparation and characterization of liquid multi-constituent systems
    Patent number: 6827478
    Abstract: A method of automated preparation and characterization of liquid multicomponent systems comprising at least two, preferably three components comprises the automated preparation of a mixture by combining at least two, preferably three components in a vessel, at least one component being metered in an automated fashion into the vessel, and the automated homogenization of the mixture with subsequent automated measuring and evaluation. The apparatus for conducting this method comprises at least one metering station, one closing station, one homogenizing station, one measuring station for determining formulation properties, and one evaluation unit.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietmar Becker, Georg Beck, Stefan Bentz, Wolfgang Best, Peter Erk, Günter Etzrodt, Martin Könemann, Reinhold Rieger, Klaus Unterforsthuber
  • Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile
    Patent number: 6828457
    Abstract: A process is provided for reducing the content of a monounsaturated aliphatic amine (III) in a mixture (IV) containing an aminonitrile (I) or a diamine (II), or mixtures thereof, and the amine (III), wherein a) the mixture (IV) is reacted with an anionic nucleophile (V),  which contains a nucleophilic atom selected from the group comprising oxygen, nitrogen and sulfur,  which is capable of taking up an H+ ion to form an acid with a pKa ranging from 7 to 11, measured in water at 25° C., and  which has a relative nucleophilicity, measured in methyl perchlorate/methanol at 25° C.,  ranging from 3.4 to 4.7 when oxygen is the nucleophilic atom,  ranging from 4.5 to 5.8 when nitrogen is the nucleophilic atom, and  ranging from 5.5 to 6.8 when sulfur is the nucleophilic atom,  in an amount ranging from 0.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Ohlbach, Christoph Benisch, Hermann Luyken, Andreas Ansmann, Rolf-Hartmuth Fischer, Johann-Peter Melder, Peter Bassler, Stefan Maixner
  • Preparation of higher &agr;, &bgr;-unsaturated alcohols
    Patent number: 6828468
    Abstract: Higher &agr;,&bgr;-unsaturated alcohols are prepared by monoethynylation of a ketone by the NH3/KOH method, if desired hydrogenation of the acetylene alcohol in the presence of hydrogen over a Pd-containing thin layer catalyst, purifying distillation of the hydrogenation product, preferably in a dividing wall column with recirculation of the unreacted ketone to the ethynylation step, and, if desired, preparation of higher alcohols having in each case 5 more carbon atoms in the chain by reacting the alcohols prepared by monoethynylation and, if desired, partial hydrogenation with alkyl acetoacetates diketene in a Carroll reaction to form ketones and using these as starting materials for the steps ethynylation, optional hydrogenation and fractional distillation.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Ansmann, Jochem Henkelmann, Alois Kindler, Heinz Etzrodt, Carsten Oost, Susanne Stutz, Christian Tragut, Bernhard Bockstiegel, Klaus Reimer, Manfred Stroezel, Walter Dobler
  • Metal complexes of iminohydroxamic acids
    Patent number: 6828454
    Abstract: Complexes of the formula I where M═Ni, Pd; process for preparing the metal complexes and the use of the complexes obtainable in this way for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Marc Oliver Kristen, Peter Preishuber-Pflügl, Benno Bildstein, Alexander Krajete
  • Preparation of cyclopentenones
    Patent number: 6828464
    Abstract: The present invention provides a process for preparing 2-cyclopentenones of the general formula: where R1 to R4 are each hydrogen atoms or are alkyl or alkenyl radicals having from 1 to 12 carbon atoms, cycloalkyl or cycloalkenyl radicals having from 5 to 7 carbon atoms, aralkylene or aryl radicals, by converting hexenedioic acids and/or their esters of the general formulae where R1 to R4 are each as defined above and R5 and R6 are each hydrogen atoms or are alkyl radicals having from 1 to 12 carbon atoms, cycloalkyl radicals having 5 or 6 carbon atoms, aralkyl or aryl radicals, at temperatures of from 150 to 450° C., over solid, oxidic catalysts, wherein the catalysts on an oxidic support material comprise from 0.01 to 5% by weight of at least one alkali metal oxide.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Shelue Liang, Rolf-Hartmuth Fischer, Sylvia Huber-Dirr, Andrea Haunert
  • Use of carotenoid aggregates as colorants
    Patent number: 6827941
    Abstract: Carotenoid aggregates are useful as colorants for foods and for cosmetic and pharmaceutical preparations.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Erik Lüddecke, Helmut Auweter, Loni Schweikert
  • Epoxide hydrolases from streptomyces
    Patent number: 6828115
    Abstract: A description is given of epoxide hydrolases from bacteria of the genus Streptomyces, a novel process for the enzymatic separation of epoxide enantiomeric mixtures, of a novel detection method for epoxide hydrolase activity, a screening method for detecting epoxide hydrolase activity and the use of bacteria of the genus Streptomyces and of the resultant epoxide hydrolases for enantioselective epoxide hydrolysis.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: December 7, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Zocher, Markus Enzelberger, Rolf D. Schmid, Wolfgang Wohlleben, Bernhard Hauer
  • Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid
    Publication number: 20040242926
    Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, the starting reaction gas mixture is oxidized at a propene loading of <160 l(STP)/l·h in a first reaction stage over a fixed catalyst bed 1 which is accommodated in two successive reaction zones A, B, and the acrolein-containing product gas mixture of the first reaction stage is subsequently oxidized in a second reaction stage over a fixed catalyst bed 2 which is a accommodated in two successive reaction zones C, D, the highest temperature of the reaction gas mixture within reaction zone A being above the highest temperature of the reaction gas mixture within reaction zone B and the highest temperature of the reaction gas mixture within reaction zone C being above the highest temperature of the reaction gas mixture within reaction zone D.
    Type: Application
    Filed: March 15, 2004
    Publication date: December 2, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Jochen Petzoldt, Klaus Joachim Muller-Engel, Heiko Arnold
  • Device and method for producing molten salts and use thereof
    Patent number: 6824702
    Abstract: The invention relates to an apparatus and a process for the preparation of salt melts, and mixtures thereof, by means of a stirred reactor and a tubular reactor, in which the starting materials are melted and brought to reaction, and the reaction products are subsequently passed through columns or towers for purification.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: November 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Leonhard Ohrem, Susanne Brzezinski
  • Oxidized polyolefin waxes
    Patent number: 6825283
    Abstract: Oxidized waxes which are prepared by oxidizing polyolefins obtained by single-site catalysis of transition metal complexes from groups 5 to 8 of the Periodic Table of the Elements and have a molecular weight Mw in the range from 1000 to 40,000 g/mol.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: November 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Shahram Mihan, Andreas Deckers
  • Anionically polymerized, impact-resistant polystyrene with capsule particle morphology
    Patent number: 6825271
    Abstract: The invention relates to an anionically polymerised, impact-resistant polystyrene with a dispersed plasticiser phase, comprising particles with capsule particle morphology and method for production thereof.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Philippe Desbois, Christian Schade, Hermann Gausepohl