Search Patents
  • Preparation of a straight-chain acrylonitrile dimer
    Patent number: 6559332
    Abstract: The present invention relates to additives for preparing straight-chain or acrylonitrile dimer from acrylonitrile and to a process for preparing straight-chain acrylonitrile dimer from acrylonitrile in the presence of the additives according to the invention.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: May 6, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christoph Gürtler, Gerhard Braun, Manfred Jautelat
  • Substituted 3-aryl-pyrazoles
    Patent number: 6559102
    Abstract: The invention relates to novel substituted 3-aryl-pyrazoles of the general formula (I) in which n, Q, R1, R2, R3, R4, R5 and X are each as defined in the description, and also to processes for their preparation and to their use as herbicides.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 6, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Schallner, Karl-Heinz Linker, Joachim Kluth, Mark Wilhelm Drewes, Dieter Feucht, Rolf Pontzen, Ingo Wetcholowsky
  • Polyurethane dispersions
    Patent number: 6559225
    Abstract: This invention relates to binders for aqueous coatings, to a process for the production thereof and to the use thereof for lacquers and coatings.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: May 6, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christoph Irle, Wolfgang Kremer, Günther Ruf, Rolf Roschu
  • Aliphatic thermoplastic polyurethanes, a process for producing them and the use thereof
    Patent number: 6559266
    Abstract: A molding composition comprising thermoplastic polyurethane is disclosed. The polyurethane is characterized in having ultimate tensile strength (UTS) and elongation at break (EAB) values after hot storage which are, each, at least 60% of the corresponding value before hot storage, glass transition temperature equal to or lower than −50° C., UTS and EAB values after hydrolytic storage which are, each, at least 80% of the corresponding value before hydrolytic storage, and Shore A hardness of 70 to 95. The polyurethane is a product of a reaction comprising an aliphatic diisocyanate, a mixture of polyols and a chain extender and contains a UV stabilizer, an antioxidant and an optional anti-hydrolysis agent.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 6, 2003
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Wolfgang Kaufhold, Wolfgang Braeuer, Hans-Georg Wussow, Hans-Georg Hoppe, Steven C. Manning
  • Substituted spiroheterocyclic 1H-3-aryl-pyrrolidine-2,4-dione derivatives, processes for their preparation, and their use as pesticides
    Patent number: 6555567
    Abstract: The invention concerns substituted spiro heterocyclic 1H-3-arylpyrrolidine-2,4-dione derivatives depicted by the formula: X is alkyl, halogen or alkoxy; Y is hydrogen, alkyl, halogen, alkoxy or alkyl halide; Z is alkyl, halogen or alkoxy; n is 0, 1, 2 or 3; G is hydrogen (a) or one of the groups (b), (c), (d), (e), (f) or (g) as defined in the specification. The invention also concerns methods of preparing the substituted spiro heterocyclic 1H-3-arylpyrrolidine-2,4-dione derivative compounds, intermediate compounds thereof and use of substituted spiro heterocyclic 1H-3-arylpyrrolidine-2,4-dione derivative compounds as pest-control agents.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: April 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reiner Fischer, Thomas Bretschneider, Bernd-Wieland Krüger, Hans-Joachim Santel, Markus Dollinger, Christoph Erdelen, Ulrike Wachendorff-Neumann
  • Amino- and amido-diphenyl ethers
    Patent number: 6555580
    Abstract: The invention relates to novel amino- and amido-diphenyl ethers, processes for their preparation and their use in pharmaceuticals, in particular for the indications of arteriosclerosis and hypercholesterolaemia.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Haning, Josef Pernerstorfer, Gunter Schmidt, Michael Woltering, Hilmar Bischoff, Verena Vöhringer, Axel Kretschmer, Christiane Faeste
  • Process for the preparation of carboxylic acid benzyl esters
    Patent number: 6555703
    Abstract: The invention relates to a process for forming a carboxylic benzyl ester comprising reacting a dibenzyl ether with a carboxylic acid in the presence of a heteropolyacid and forming a carboxylic acid benzyl ester.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: April 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Pieter Ooms, Bernd-Ulrich Schenke
  • Pulverent binders for powder coating compositions containing oligo- and polyurethanes having (meth)acryloyl groups
    Patent number: 6555597
    Abstract: The present invention relates to pulverent binders for powder coating compositions which contain oligo- and polyurethanes having (meth)acryloyl groups, are curable by means of high energy radiation and have an organic solvent content of less than 1 wt. %. The present invention also relates to a process for preparing these binders in the absence of an organic solvent and to their use in powder coating compositions for coating wood, metal, plastic, mineral and/or preprimed substrates.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: April 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan Weikard, Christian Zwiener, Wolfgang Fischer, Peter Thometzek
  • Phenylpyridazinones
    Patent number: 6551963
    Abstract: The invention relates to novel phenylpyridazinones of the general formula (I) in which R1, R2, R3, R4, R5 and R6 are each as defined in the description, to processes for their preparation, to their use as herbicides and to novel intermediates and processes for preparing them.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: April 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Linker, Kurt Findeisen, Wilhelm Haas, Markus Dollinger, Hans-Joachim Santel
  • Thermoplastic resins having incorporated mold release agents
    Patent number: 6552153
    Abstract: A mixture of hydroxy-terminated hydrocarbons useful as a mold release agent for polymers is disclosed. The polymers suitable in the present context are the ones prepared by polyaddition or polycondensation, in particular, thermoplastic polyurethane and polyurethane urea.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: April 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Kaufhold, Friedemann Müller, Wolfgang Bräuer, Hans-Georg Hoppe, Hans-Georg Wussow
  • Vacuole-free polymer granulates
    Patent number: 6551538
    Abstract: A process for preparing a vacuole-free polymer is disclosed. Extruded polymer resin is cooled at a rate of less than 50° C./sec. to a temperature that is 1 to 20° C. above the glass transition temperature of the polymer resin and the resin is then cut.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: April 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Elsner, Jürgen Heuser, Christian Kords
  • Method for preparing 2-nitro-5-(phenylthio)-anilines
    Patent number: 6552230
    Abstract: The invention relates to a process for preparing 2-nitro-5-(phenylthio)anilines of formula (I) wherein R1 represents hydrogen, C1-C8-alkyl, C3-C8-cycloalkyl, C1-C8-alkoxy, or halogen and R2 represents hydrogen, C1-C8-alkyl, C3-C8-cycloalkyl, C1-C8-alkoxy, halogen, or C6-C10-aryl optionally substituted with C1-C8-alkyl, C1-C8-alkoxy, or halogen, by reacting, in a solvent, a 5-chloro-2-nitroaniline of the formula (II) wherein R1 is as defined for formula (I), with a thiophenol of the formula (III) wherein R2 is as defined for formula (I), and ammonia.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Volker Glock, Willi Streicher, Friedrich-Wilhelm Ullrich
  • Reactive binding agent with an extended pot life
    Patent number: 6548615
    Abstract: The invention relates to a reactive composition containing A) an isocyanate-containing compound, B) a polyol, C) an organic tin or bismuth compound, D) a thiol group-containing compound or a polyphenol which is able to react with an isocyanate group in the presence of a tertiary amine as activator and with adjacent hydroxyl groups and E) a hydrolyzable halogen compound, wherein the molar ratio SH and/or OH:metal is 2 to 500 and the molar ratio halogen/metal is 0.05 to 10.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Groth, Jan Mazanek, Rolf Langel, Detlef-Ingo Schütze, Jürgen Urban
  • Substituted phenyluracils with herbicidal effect
    Patent number: 6548449
    Abstract: The invention relates to novel substituted phenyluraciles of the general formula (I) in which m, n, Q and R1-7 are each as defined in the description, and to processes for their preparation and to their use as herbicides.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Andree, Markus Dollinger, Mark Wilhelm Drewes, Ingo Wetcholowsky, Randy Allen Myers
  • Supported catalysts containing a platinum metal and process for preparing diaryl carbonates
    Patent number: 6548445
    Abstract: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Carsten Hesse, Jörg-Dietrich Jentsch, Johann Rechner, Eberhard Zirngiebl
  • Propionic acid derivatives
    Patent number: 6548538
    Abstract: The present application relates to novel potent PPAR-alpha-activating compounds for treating, for example, coronary heart disease, and to their preparation.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Urbahns, Michael Woltering, Susanne Nikolic, Josef Pernerstorfer, Berthold Hinzen, Elke Dittrich-Wengenroth, Hilmar Bischoff, Claudia Hirth-Dietrich, Klemens Lustig
  • Acylaminosalicylic acid amides and their uses as pesticides
    Patent number: 6548549
    Abstract: The invention relates to known and to new acylaminosalicylamides, to a plurality of processes for their preparation and to their use as pesticides. The present application furthermore relates to new intermediates, to a plurality of processes for their preparation and to their use as pesticides.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Seitz, Klaus Naumann, Ralf Tiemann, Klaus Stenzel, Gerd Hänssler, Stefan Dutzmann
  • Method for the direct catalytic oxidation of unsaturated hydrocarbons in gaseous phase
    Patent number: 6548682
    Abstract: A supported catalyst coated with gold particles is produced. This supported catalyst is used to oxidize unsaturated hydrocarbons in the gas phase with a hydrogen/oxygen mixture.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Weisbeck, Ernst-Ulrich Dorf, Gerhard Wegener, Christoph Schild, Bernhard Lücke, Herbert Dilcher, Ulrich Schülke
  • Method of increasing the concentration of dilute brine in NaCl electrolysis plants using the membrane process
    Patent number: 6547948
    Abstract: The present invention relates to a method of increasing the concentration of dilute brine in NaCl electrolysis plants using the membrane process, wherein the NaCl required is stored in a mass flow silo with supernatant liquid and is fed continuously from there to the quick dissolver.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Alfred Soppe, Klaus Geisler, Bernd Bressel
  • Composite consisting of a coated polycarbonate and a polymer
    Patent number: 6548146
    Abstract: A composite plastic structure is described. The composite structure includes: (a) a shaped polycarbonate article having an edge region, the edge region having an adhesion-promoting geometric feature therein; (b) a coating applied to the surface of the shaped polycarbonate article; and (c) a polymer that is injection-molded or cast over the edge region of the shaped polycarbonate article. The polymer (c) envelopes the adhesion-promoting geometric feature of the shaped polycarbonate article (a). The envelopment of the adhesion-promoting geometric feature by the polymer (c) provides a structurally firm connection between the shaped polycarbonate article (a) and the polymer (c). Also described is a method of preparing the composite structure, and composite structures according to the present invention, such as picture frames, slide frames, windows having a seal or frame, and a glazing for a motor vehicle.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: April 15, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Bier, Peter Capellen