Patents Assigned to BASF
  • PROCESS FOR PRODUCING COMPACT OR CELLULAR POLYURETHANE ELASTOMERS BASED ON 3,3? DIMETHYL DIPHENYL 4,4? DIISOCYANATE-CONTAINING POLYISOCYANATE MIXTURES AND ISOCYANATE PREPOLYMERS SUITABLE THEREFOR
    Patent number: 6444777
    Abstract: Compact and preferably cellular polyurethane elastomers based on polyisocyanate mixtures containing 3,3′-dimethylbiphenyl 4,4′-diisocyanate are produced by reacting a) relatively high molecular weight polyhydroxyl compounds and, if desired, b) low molecular weight hydroxyl-containing chain extenders and/or crosslinkers with c) 3,3′-dimethylbiphenyl 4,4′-diisocyanate and at least one additional aromatic diisocyanate selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or at least one aliphatic diisocyanate having from 4 to 12 carbon atoms and/or at least one cycloaliphatic diisocyanate having from 6 to 18 carbon atoms, where the formative components (a), (c) and, if used, (b) are advantageously reacted by the prepolymer method, in the presence or absence of d) catalysts, e) blowing agents and f) additives.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Genz, Gerhard Hellmann, Walter Haselhorst, Torsten Jeschke, Ute Nichau, Heinz Bollmann, Michael Strauss, Wolfgang Scholz, Hartmut Peuker, Rüdiger Voelkel
  • Process for the preparation of 1,4-diaryl-2-fluoro-4-cyano-2-butenes and intermediates useful therefor
    Patent number: 6444838
    Abstract: The present invention provides a process for the preparation of pesticidal 1,4-diaryl-2-fluoro-4-cyano-2 -butene compounds having the structural formula I and intermediates useful therefor.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Yulin Hu, David Allen Hunt
  • Preparation of aldehydes and/or alcohols having from 6 to 30 carbon atoms
    Patent number: 6444856
    Abstract: In a process for preparing aldehydes and/or alcohols having from 6 to 30 carbon atoms by hydroformylation of olefins by means of synthesis gas in the presence of a catalyst at from 120° C. to 210° C. and pressures of from 100 to 400 bar, a reaction mixture comprising olefins, synthesis gas and catalyst or catalyst precursor is, according to the present invention, introduced at high velocity into a high-pressure reactor via a nozzle having an adjustable flow cross section.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Armin Volker Grenacher, Hans-Georg Hein, Hans Stepp, Hans-Jürgen Fröhlich, Willi Schönmann, Gerhard Borchert
  • Method for producing expandable polystyrene particles
    Patent number: 6444714
    Abstract: A process for preparing expandable particulate styrene polymers wherein from 5 to 50% by weight of expanded graphite and also, if desired, from 2 to 20% by weight of a phosphorus compound, are present as flame retardants, by suspension polymerization of styrene in the presence of the flame retardants.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellshaft
    Inventors: Guiscard Glück, Franz-Josef Dietzen, Klaus Hahn, Gerd Ehrmann
  • Cleaning apparatus for removing residues
    Patent number: 6443170
    Abstract: A cleaning apparatus for removing residues from the bottoms outflow of an evaporation apparatus which produces tops product and bottoms product and is equipped with an outflow, comprising: a) an outflow vessel (7), b) a collection vessel (8), c) an outflow valve, (10), d) a cleaning water valve (11), e) a vessel outflow valve (12), f) a cleaning outflow valve (13), g) a vent valve (14), h) a line (17) leading from the bottom to the outflow valve (10), i) a cleaning agent introduction tube (3), j) an outflow line device (6, 16) and connection lines between the devices a) to j). The cleaning apparatus can be used in the workup of salt-containing solutions by distillation.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Frans Vansant, Jozef de Hert, Dieter Köffer, Gerhard Theis, Winfried Terjung
  • Purification device for gases
    Patent number: 6444178
    Abstract: An exhaust gas purification device includes a porous body of catalytic material of the general formula AaBbO4 disposed in an exhaust gas stream of an engine. The porous body of catalytic material has a characteristic response temperature above which it is catalytically active to reduce pollutants in the presence of a reducing agent. The porous body stores at least 20% by volume hydrocarbons at temperatures below the response temperature. A represent at least one element selected from Mg, Ca, Mn, Fe, Ni, Co, Cu, Zn, Sn, Ti and A+B is less than 3, A is greater than 0 and B greater than 0.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: September 3, 2002
    Assignees: DaimlerChrysler AG, BASF Aktiengesellschaft
    Inventors: Martin Hartweg, Rolf-Dirc Roitzheim, Andrea Seibold, Leonhard Walz, Thomas Fetzer, Bernd Morsbach
  • Method of reducing the content of residual monomers in aqueous polymer dispersions
    Patent number: 6444760
    Abstract: A process is described for effectively reducing the residual monomer content of an aqueous polymer dispersion by aftertreatment at atmospheric pressure or above with an initiator system comprising a) a hydroperoxide, hydrogen peroxide or a peracid, and b) an &agr;-hydroxy carboxylic acid, such as tartaric acid, or with a salt thereof.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Robert Rupaner, Gerhard Bauer, Sven Lawrenz, Claudia Heibel, Johannes Dobbelaar
  • Preparing aqueous polymer dispersions
    Patent number: 6444748
    Abstract: A process for preparing aqueous polymer dispersions by means of a polymerization, conducted in an aqueous system, of at least one free-radically polymerisable ethylenically unsaturated monomer in the presence of a polymerisation initiator, wherein the pH of the aqueous dispersion is adjusted during the preparation process by adding at least two different, basic reagents, at least one of said basic reagents being added in a plurality of stages.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Maximilian Angel, Karl Kolter, Axel Sanner
  • Crop protection emulsifiable concentrate containing defoaming agents
    Patent number: 6444618
    Abstract: The novel emulsifiable concentrate (EC) formulation comprising at least one pesticidal crop protection active compound, at least one non-polar organic solvent, optionally, at least one polar aprotic cosolvent, an emulsifying surfactant system enabling an oil-in-water emulsion to be formed when the formulation is added to water, and at least one defoaming or foam breaking agent selected from the group consisting of perfluoroalkylphosphonic acids, perfluoroalkylphosphinic acids and perfluoroaliphatic polymeric esters is useful for combating pests or diseases caused by pests at a locus by treating the locus with a composition obtained from emulsifying the EC in water.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Aven, Friedrich Schmidt
  • Weathering-stable, radiation-curable polyurethanes
    Patent number: 6444721
    Abstract: A water-dispersible, radiation-curable polyurethane composed essentially of a) organic, aliphatic or alicyclic polyisocyanates, b) cycloaliphatic diols and/or cycloaliphatic diamines, c) compounds containing at least one isocyanate-reactive group and at least one free-radically polymerizable unsaturated group, d) compounds containing at least one isocyanate-reactive group and at least one dispersing-active group, e) if desired, compounds containing at least two isocyanate-reactive groups having a molecular weight <1000 g/mol, f) if desired, compounds other than a) to d) containing at least one isocyanate-reactive group.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Schwalm, Frank Völlinger, Klaus Menzel, Wolfgang Reich, Erich Beck, Thomas Jaworek
  • Method for retarded anionic polymerization
    Patent number: 6444767
    Abstract: In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl, at least one magnesium organyl and at least one aluminum organyl. The invention also provides an initiator composition for carrying out the process.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Wolfgang Fischer, Hermann Gausepohl, Rainer Klostermann, Volker Warzelhan, Michel Fontanille, Alain Deffieux, Philippe Desbois
  • Fungicidal mixtures
    Patent number: 6444692
    Abstract: A fungicidal mixture, comprising at least one compound selected from a) carbamates of the formula I,  where T is CH or N, n is 0, 1 or 2 and R is halogen, C1-C4-alkyl or C1-C4-haloalkyl, it being possible for the radicals R to be different if n is 2, a2) the oxime ether carboxylate of the formula II  or a3) the oxime ether carboxamide of the formula III,  and b) a compound of the formula IV in a synergistically effective amount.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schelberger, Maria Scherer, Reinhold Saur, Hubert Sauter, Bernd Müller, Erich Birner, Joachim Leyendecker, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann
  • Imidazolinone resistant AHAS mutants
    Patent number: 6444875
    Abstract: The present invention relates to mutant AHAS enzymes that are specifically resistant to imidazolinone herbicides. Exemplary of these is a corn sequence, which encodes an amino acid substitution at position 621 of the wild-type AHAS enzyme. Polynucleotides encoding the mutant enzyme can be used in screening methods for identifying plant cells that have been transformed.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventor: Gabriele Elfriede Dietrich
  • Anionic polymerization process
    Patent number: 6444762
    Abstract: A process for the continuous anionic polymerization or copolymerization of styrene or diene monomers using an alkali metal alkyl compound as polymerization initiator is carried out in the presence of an alkyl- or arylmetal compound of an element which occurs in at least divalent form as rate regulator, preferably under non-isothermal conditions and without back-mixing in a tubular or tube-bundle reactor, preferably using an alkyl- or arylmetal compound A of the formula R1M1 and an alkyl- or arylmetal compound B of the formula R2nM2 in a molar ratio between B and A of from 0.1:1 to 500:1, where M1 is Li, Na or K; R1 is hydrogen, C1-C20-alkyl, C6-C20-aryl, or C7-C20-alkyl-substituted aryl; M2 is an n-valent element from group 2a, 2b or 3a of the Periodic Table; and R2 is hydrogen, halogen, C1-C20-alkyl or C6-C20-aryl; and a special anionic polymerization initiator containing no Lewis base.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Fischer, Konrad Knoll, Wolfgang Loth, Volker Warzelhan, Alain Deffieux, Philippe Desbois, Michel Fontanille, Stefan Lätsch, Christian Schade, Hermann Gausepohl
  • Process for the preparation of 2,3-pyridinedicarboximides
    Publication number: 20020120143
    Abstract: There is provided a process for the preparation of 2,3-pyridinedicarboximides having the structural formula I 1
    Type: Application
    Filed: June 29, 2001
    Publication date: August 29, 2002
    Applicant: Intellectual Property Department, BASF Aktiengesellschaft
    Inventors: Kenneth Alfred Martin Kremer, Wen-Xue Wu, Donald Roy Maulding
  • Aqueous polymer dispersion comprising rubber particles and polymer particles having a reinforcing action
    Publication number: 20020120025
    Abstract: An aqueous polymer dispersion comprises rubber particles and polymer particles having a reinforcing action.
    Type: Application
    Filed: December 10, 2001
    Publication date: August 29, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Roelof Balk, Onno Graalmann, Bernhard van der Most
  • Continuous polymerization and direct fiber spinning and apparatus for accomplishing same
    Patent number: 6441109
    Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: August 27, 2002
    Assignee: BASF Corporation
    Inventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, Jr., John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
  • Method for preparing trion-bis(oxime ether) derivatives andrion-mono and trion-bis(oxime ether) derivatives obtained therewith
    Patent number: 6441236
    Abstract: The present invention relates to a method for the production of trion-bis(oxime ether) derivatives of formula (I), wherein the substituents have the following meaning: R1, R3 represent unsubstituted, partially or totally halogenated C1-C6-alkyl or C3-C6-cycloalkyl; R2, R4 represent C1-C4-alkyl or a methyl substituted by C2-C4-alkenyl, C2-C4-alkinyl or phenyl and X represents oxygen or N—OH. The invention also relates to the intermediate products obtained with said method.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: August 27, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Grote, Bernd Wolf, Michael Rack, Roland Götz, Andreas Gypser, Adrian Steinmetz, Hubert Sauter, Michael Keil, Horst Mayer
  • Crystal modification of lipoic acid
    Patent number: 6441024
    Abstract: In the 2 &THgr; diffractogram of an enantiomerically pure crystalline (R)- or (S)-lipoic acid, the most intense reflection line in the range from 13° to 30° is that at 2 &THgr;=23°.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 27, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Jochen Klatt, Markus Niebel, Joachim Paust, Jens Rieger
  • Process for the preparation of 5-and/or 6-substituted-2-hydroxybenzoic acid esters
    Patent number: 6441219
    Abstract: There is provided a single-step process for the preparation of a compound of formula I. Compounds of formula I are useful as starting materials in the synthesis of natural products and in the manufacture of benzophenone fungicidal agents.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: August 27, 2002
    Assignee: BASF Corporation
    Inventor: Robert Francis Doehner, Jr.