Patents Represented by Attorney Richard E. L. Henderson
  • Patent number: 6541667
    Abstract: A process for preparing a thioamide of the formula (I) wherein R is an aryl or a heteroaryl radical includes the step of mixing a nitrile of the formula (II) R—CN  (II) wherein R is an aryl or a heteroaryl radical with an aqueous solution comprising a sulfide and water.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Bayer Corporation
    Inventor: David T. Erdman
  • Patent number: 6534529
    Abstract: The invention relates to insecticidal mixtures of fipronil and agonists or antagonists of nicotinic acetylcholine receptors for the protection of industrial materials and plants.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: March 18, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Uhr, Hans-Ulrich Buschhaus, Martin Kugler, Franz Kunisch, Heinrich Schrage
  • Patent number: 6531496
    Abstract: The invention relates to new O-aryldithiazole dioxides, to two processes for their preparation, and to their use as pesticides in crop protection and in the protection of materials.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: March 11, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Uhr, Christiane Boie, Heiko Rieck, Bernd-Wieland Krüger, Ulrich Heinemann, Robert Markert, Martin Vaupel, Martin Kugler, Klaus Stenzel, Ulrike Wachendorff-Neumann, Astrid Mauler-Machnik, Karl-Heinz Kuck, Peter Lösel, Shinichi Narabu
  • Patent number: 6528079
    Abstract: The present invention relates to shaped articles which release agrochemical active compounds, are used for treatment of woody plants and are employed in a hollow preformed in the woody plant, are of a volume which fills the volume of the hollow to the extent of 10 to 95%, are of a volume which does not increase during the period of use to the extent that the preformed hollow space is filled completely, comprise a) agrochemical active compounds, b) water-insoluble thermoplastically processable polymers, c) water-soluble polymers and d) is appropriate further auxiliaries.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: March 4, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Podszun, Uwe Priesnitz, Jürgen Hölters, Bodo Rehbold, Rafel Israels
  • Patent number: 6528576
    Abstract: The invention relates to textile treatment compositions containing (K1) mixtures of (A) 0 to 30% by weight of polyalcohols obtained by catalyzed reaction of formaldehyde with ketones bearing at least 4 replaceable hydrogen atoms adjacent to the carbonyl group, (B) 0 to 30% by weight of polyalcohols other than (A), (C) 0.1 to 10% by weight of adducts of fatty acids, fatty alcohols, alkyl- or dialkylamines, or alkylphenols with 2 to 100 mol of ethylene oxide, and (D) 70 to 99.9% by weight of an aqueous softener formulation containing 10 to 90% by weight of softener compounds based on the aqueous softener formulation,  wherein the total amount of (A)+(B) is ≧0.1% by weight, based on the sum total of the individual components (A) to (D), and (K2) a bisulphite-blocked polyisocyanate prepolymer, wherein the weight ratio of component K1 to component K2 is 0.1:1 to 5:1.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: March 4, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut-Martin Meier, Ferdinand Kümmeler, Detlev Kierspe, Peter Selinger, Jacob-Cornelis Dijks, Winfried Guth
  • Patent number: 6525092
    Abstract: Bis-oxime compounds of the general formula (I) are provided wherein X, Y, R1, R2 R3 and n are as defined in the specification. The bis-oxime compounds possess pesticidal activity, which may provide plants with protection from phytopathogenic microorganisms.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: February 25, 2003
    Assignee: Bayer Aktiengsellschaft
    Inventors: Hugo Ziegler, Stephan Trah
  • Patent number: 6518296
    Abstract: The invention relates to novel substituted 3-thiocarbamoylpyrazoles of general formula (I), wherein m, n, R1, R2, R3 and Ar have the meanings cited in the description. The invention further relates to methods for the production and use thereof as pesticides.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: February 11, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernd Alig, Albrecht Marhold, Jörn Stölting, Wolfgang Gau, Christoph Erdelen, Andreas Turberg, Norbert Mencke, Olaf Hansen
  • Patent number: 6509343
    Abstract: Active compound combinations comprising a compound of the formula (I) and known fungicidally active compounds, and their use for controlling phytopathogenic fungi, are described.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: January 21, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Stenzel, Stefan Dutzmann, Ulrich Heinemann
  • Patent number: 6504036
    Abstract: The invention relates to novel phenyl-substituted cyclic ketoenols of the formula (I) in which Het represents one of the groups in which A, B, D, G, X and Z are each as defined in the description, to a plurality of processes and intermediates for their preparation, and to their use as pesticides.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: January 7, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Folker Lieb, Reiner Fischer, Thomas Bretschneider, Michael Ruther, Alan Graff, Udo Schneider, Christoph Erdelen, Ulrike Wachendorff-Neuman, Wolfram Andersch, Andreas Turberg
  • Patent number: 6504060
    Abstract: The invention relates to a process for the preparation of diaminodicyclohexylmethane (“PACM”) with a proportion of trans,trans-4,4′-diaminodicyclohexylmethane of from 17 to 24% by hydrogenation of diaminodiphenylmethane (“MDA”) in the presence of a pulverulent catalyst in a continuously operated suspension reactor at a conversion of MDA of at least 95%, based on the amount of MDA used.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: January 7, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Bunnenberg, Andreas Gröschl, Michael Holzbrecher, Andreas Schulze Tilling
  • Patent number: 6495492
    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: February 20, 2001
    Date of Patent: December 17, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Schallner, Karl-Heinz Linker, Joachim Kluth, Mark Wilhelm Drewes, Dieter Feucht, Rolf Pontzen, Ingo Wetcholowsky
  • Patent number: 6494948
    Abstract: This invention relates to a process for preparing quinacridone pigment compositions by (a) heating a reaction mixture containing (i) 2,5-dianilinoterephthalic acid or 2,5-dianilino-6,13-dihydroterephthalic acid or a derivative thereof, (ii) about 0.1 to about 5 percent, based on component (a)(i), of 2,5-di(sulfamoylanilino)terephthalic acid and/or 2,5-di(sulfamoylanilino)-6,13-dihydroterephthalic acid or a derivative thereof, (iii) about 0.1 to about 15 percent by weight, based on component (a)(i), of other sulfonyl-containing derivatives of 2,5-dianilinoterephthalic acid and/or 2,5-dianilino-6,13-dihydroterephthalic acid, (iv) about 3 to about 20 parts by weight, per part of component (a)(i), of a dehydrating agent, and (v) optionally, a solvent; (b) drowning the reaction mixture from step (a) with a liquid in which the quinacridone pigment composition is substantially insoluble; and (c) isolating the quinacridone pigment composition.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: December 17, 2002
    Assignee: Bayer Corporation
    Inventors: Daphne J. Rice, Ibraheem T. Badejo
  • Patent number: 6491790
    Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: December 10, 2002
    Assignee: Bayer Corporation
    Inventors: Robert J. Proverb, Michael J. Scanlon
  • Patent number: 6489513
    Abstract: The invention relates to the preparation of enantiomerically pure bis-diphenylphosphine oxides in a particularly advantageous manner by (1) reacting an aromatic bromine compound with a diphenylphosphinic chloride in a mixture of tetrahydrofuran and an aromatic hydrocarbon to give a diphenylphosphine oxide, which is isolated from a solution in an aromatic hydrocarbon by adding a saturated aliphatic hydrocarbon; (2) metalating the resulting diphenylphosphine oxide in the 6-position and reacting the metalated diphenylphosphine oxide with iodine at temperatures not less than −25° C.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: December 3, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Torsten Pohl, Thomas Prinz, Guido Giffels, Wolfram Sirges
  • Patent number: 6479521
    Abstract: The present application relates to the use of 2-mercapto-pyridine N-oxide and/or its alkali metal and alkaline earth metal salts and its metal complexes for the preservation of animal skins and leather.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: November 12, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Exner, Heinz-Joachim Rother, Martin Kugler, Hartmut Rehbein
  • Patent number: 6476274
    Abstract: The invention relates to a process for preparing cyclobutanone by oxidizing cyclobutanol with an alkali metal hypochlorite or alkaline earth metal hypochlorite in the presence of an acid.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: November 5, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Knops, Bernd Gallenkamp, Lubbertus Mulder, Stefan Antons
  • Patent number: 6476277
    Abstract: The present invention relates to a process for preparing hydroxyaromatics by oxidizing aromatics with dinitrogen monoxide in the gas phase in the presence of nanocrystalline zeolites.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: November 5, 2002
    Assignee: Bayer Aktiengesellschafter
    Inventors: Bernd Vogel, Elias Klemm, Mathias Seitz, Jochen Heller, Jörg Reiser
  • Patent number: 6472560
    Abstract: The present invention relates to a novel process for preparing hydrazodicarbonamide (HDC) that is, after oxidation to azodicarbonamide (ADC), used industrially as a polymer auxiliary.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Manfred Jautelat, Walter Leidinger
  • Patent number: 6472570
    Abstract: This invention relates to process for asymmetric dihydroxylation of olefins using osmium catalysts to obtain monofunctional, bifunctional, and/or polyfunctional chiral 1,2-diols of the formula (I) R1R2C(OH)—C(OH)R3R4  (I) where R1 to R4 are defined herein, by reacting an olefin of the formula (II) R1R2C═CR3R4  (II) where R1 to R4 are defined as for formula (I), with molecular oxygen in the presence of an osmium compound and a chiral amine ligand in water or a water-containing solvent mixture at a pH of from 8.5 to 13.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Matthias Beller, Christian Döbler, Gerald Mehltretter, Uta Sundermeier
  • Patent number: 6472479
    Abstract: The invention relates to sulfonated bead polymers prepared from styrene, vinylpyridines, further monomers, and crosslinkers, to a process for preparing them, and to their use as cation exchangers.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: October 29, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Burkhard Köhler, Rüdiger Seidel, Olaf Halle, Eckhard Wenz