Patents Represented by Attorney Diderico van Eyl
  • Patent number: 6649029
    Abstract: The present invention relates to a specific process in which wool is initially subjected to a plasma treatment and then to a wet chemical treatment with a finishing agent, which provides nonfelting wool in a technically simple and easily handleable manner.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 18, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Bernhard Jansen, Ferdi Kümmeler, Ralf Heinen
  • Patent number: 6646023
    Abstract: The invention relates to a method of coloring seed, seed-dressing materials, or seed-dressing material formulations with solid pigment preparations containing (a) at least one organic or inorganic pigment and (b) at least one compound selected from the group consisting of polyether polyols, reaction products of alkylene oxides with alkylatable compounds, or oxalkylated phenols, wherein the solid pigment preparations have a water content of less than 10% by weight, based on the pigment preparation, and a mean weight average particle size of 20 to 2000 &mgr;m.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: November 11, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventor: Peter-Roger Nyssen
  • Patent number: 6645609
    Abstract: Described is a stretched multilayered film comprising: (a) a polyolefin layer; and (b) at least one peelable outer layer. Each peelable outer layer (b) independently is 0.5 to 5 &mgr;m thick, comprises a copolymer of vinyl acetate and ethylene, and has a vinyl acetate proportion of from 3 to 30 wt. %, based on the weight of the peelable outer layer (b). Also described is a method of using the multilayered film as a packaging film.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: November 11, 2003
    Assignee: Wolff Walsrode AG
    Inventors: Bernd Sperlich, Helmut Wagner, Willi Schwarz, Hans Wunderlich
  • Patent number: 6638958
    Abstract: The 3-nitroisoxazoles of the formula (I) in which R1 and R2 are each as defined in the description, some of which are known, are highly suitable for use as biocides for protecting industrial materials.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: October 28, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Uhr, Oliver Kretschik, Martin Kugler, Peter Wachtler
  • Patent number: 6635729
    Abstract: The invention relates to a process for preparing water-soluble &pgr;-conjugated polymers by polymerizing, in aqueous solution using an oxidant, monomeric thiophene derivatives of formula (I) wherein X and Y are identical or different and are O, S, or N—R′, Z is —(CH2)m—CR2R3—(CH2)n—, R1 is aryl, C1-C18-alkyl, or hydrogen, R2 is hydrogen or —CH2)s—O—(CH2)p—SO3−M+, R3 is —(CH2)s—O—(CH2)p—SO3−M+, M+ is a cation, m and n are identical or different and are an integer from 0 to 3, s is an integer from 0 to 10, and p is an integer from 1 to 1.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 21, 2003
    Assignees: Bayer Aktinegesellschaft, Agfa-Gevaert N.V.
    Inventors: Lambertus Groenendaal, Friedrich Jonas, Tom Cloots, Frank Louwet
  • Patent number: 6626975
    Abstract: The invention relates to a method for producing a homogeneous mixture of hard material powders and binder metal powders without using grinding bodies, liquid grinding auxiliary agents and suspending media. According to the invention, the mixture components are mixed at close range while generating a high shearing collision velocity of the powder particles and are remotely mixed by rotating the mixing bed without resulting in a particle size reduction of the hard material powders.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: September 30, 2003
    Assignee: H. C. Starck GmbH & Co. KG
    Inventors: Benno Gries, Jörg Bredthauer
  • Patent number: 6620962
    Abstract: According to the invention, N-butyryl-4-amino-3-methyl-methyl benzoate is obtained in a particularly advantageous manner by, initially, reacting o-toluidine with butyric acid chloride, by brominating the reaction product and by reacting the bromide obtained therefrom with carbon monoxide and methanol in the presence of a palladium catalyst. The invention also relates to the important novel chemical compound N-(4-bromine-2-methylphenyl)-butanamide.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: September 16, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lars Rodefeld, Thomas Höpfner, Alexander Klausener, Horst Behre
  • Patent number: 6613104
    Abstract: The invention relates to optical brighteners that possess at least one free SO3H group and their use for whitening materials containing cellulose.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: September 2, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Zarges, Rolf Brockmann, Erwin Bacher, Detlef Szeymies
  • Patent number: 6610884
    Abstract: A process is provided for preparing specific polycarboxylic acids by oxidative cleavage of double-bond compounds with hydrogen peroxide or hydrogen peroxide donors. The polycarboxylic acids thus obtained are notable for excellent acid stability, and consequently ease of handling in aqueous solution and are useful for treating cellulosic fibers or textile or paper materials produced therefrom.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Gerle, Hans-Albert Ehlert, Günter Franke, Helmut-Martin Meier
  • Patent number: 6610753
    Abstract: The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and (II) wherein X represents hydrogen or an alkali metal ion, by reacting a weak-base anion exchanger bearing primary amino groups with monochloro-acetic acid and/or an alkali metal salt of monochloroacetic acid at a temperature of from 70 to 110° C. and a pH of from 7 to 11.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: August 26, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Holger Lütjens, Klaus Rall, Axel Ingendoh, Reinhold Klipper
  • Patent number: 6610893
    Abstract: A process is provided for preparing 4-hydroxy-3-nitrobiphenyl from 4-hydroxy-biphenyl by nitrating in the position adjacent to the phenolic hydroxyl group in high selectivity and yield, and the nitric acid used as the nitrating reagent is metered into the reaction system in a specific manner.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: August 26, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Behre, Michael Dockner, Alexander Klausener
  • Patent number: 6600064
    Abstract: The invention relates to a process for the preparation of hydroxybenzoic benzyl esters by reacting dibenzyl ethers with alkylcarbonyloxybenzoic or alkoxycarbonyloxybenzoic acids and optionally anhydrides thereof in the presence of one or more acids as catalyst.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: July 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Pieter Ooms, Bernd-Ulrich Schenke
  • Patent number: 6600589
    Abstract: The invention relates to a light-protected electrochromic device containing a pair of glass or plastic sheets or plastic films. One side of at least one of said sheets or films, preferably both sheets or films, is provided with an electroconductive coating. At least one of said sheets or films and its electroconductive coating are transparent and the other can be metallized. The electroconductive coating of at least one of the two sheets or films can be divided up into separate, individually contacted surface segments. The sheets or films are joined by a sealing ring on the sides of their electroconductive coatings and the volume created by the sheets or films and the sealing ring is filled with an electrochromic medium. The invention is characterized in that the electrochromic device contains a yellow filter for which the wavelength at which absorbance in the long-wave flank reaches half of the very long-wave maximum absorbance value is between 370 and 500 nm, preferably between 380 and 470 nm.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: July 29, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Stephan Michaelis, Ralf Neigl, Hermann Jens Womelsdorf
  • Patent number: 6596446
    Abstract: The invention relates to pigment preparations comprising a metal complex of a mono-, di-, tri-, or tetraanion of an azo compound that in its free acid form conforms to formula (I) or a tautomeric form thereof wherein R and R′ are independently OH, NH2, NH—CN, acylamino, or arylamino, and R1 and R1′ are independently —OH or —NH2, with a metal selected from the group consisting of Na, K, Ca, Sr, Ba, Zn, Fe, Ni, Cu, Mn, La, Li, Cs, Mg, Cd, Co, Al, Cr, Sn, and Pb, wherein the metal complex hosts at least one guest compound.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: July 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Mickey Wolf, Rolf Richter, Kent Faubion, Udo Herrmann, Josef Witt, Peter-Roger Nyssen
  • Patent number: 6596864
    Abstract: This invention relates to compounds of the formula (I) where Z is SO3M, COOR1, CONR1, SO2NHR1, NHCOR1, COR2, or CN, where R1 is M or C1-C3-alkyl and R2 is C1-C3-alkyl or phenyl, X is O or NR3, where R3 is hydrogen or C1-C4-alkyl, Y is hydrogen or C1-C4-alkyl, M is hydrogen, an alkali metal cation, or an optionally substituted ammonium ion, n is from 4 to 35, and m is 0, 1 or 2.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: July 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Uwe Vogt, Rolf Brockmann, Thomas Roick, Karl-Rudolf Gassen, Ulrich Feldhues
  • Patent number: 6596073
    Abstract: The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensation product prepared from b1A) sulphonated aromatics b1B) aldehydes and/or ketones and b1C) optionally one or more compounds selected from the group of unsulphonated aromatics, urea and urea derivatives, and b2) phosphoric acid, phosphonic acid and derivatives thereof, and c) at least one organic thickener.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: July 22, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Roger Nyssen, Josef Witt
  • Patent number: 6596136
    Abstract: The invention relates to an electrochemical half cell (1) which consists of at least one membrane (4), an electrode (3) as anode or cathode which optionally produces gas, optionally an outlet (8; 16) for the gas and a support structure (12) linking the electrode which optionally produces gas with the back wall (15) of the half cell. The support structure (12) divides the interior (13) of the half cell (1) into vertically arranged channels (5, 9). The electrolyte (14) flows upwards in the electrode channels (9) facing the electrode (3) and flows downwards in the channels (5) facing away from the electrode (3). The electrode channels (9) and the channels (5) facing away from the electrode (3) are interlinked at their upper and lower ends.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: July 22, 2003
    Assignees: Uhdenora Technologies S.r.l., Bayer Aktiengesellschaft
    Inventors: Fritz Gestermann, Peter Fabian
  • Patent number: 6593532
    Abstract: Electrolytic capacitor lead wires doped with one or more interstitial elements at the surface to enhance (lower) leakage of capacitors using such lead wires.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: July 15, 2003
    Assignee: H. C. Starck, Inc.
    Inventors: Howard V. Goldberg, Prabhat Kumar, Thomas Ryan
  • Patent number: 6593468
    Abstract: This invention relates to a process for producing a substantially fiber-free carboxymethyl cellulose which predominantly exhibits elastic properties, to the use thereof as a superabsorbent material, and to the use thereof as an adjuvant substance for achieving suitable rheological and water retention properties for the cosmetics, pharmaceutical and food sectors, and for industrial applications, e.g. as an additive for coating materials, for the sealing of cables and for use in tunnelling and in civil and underground engineering.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: July 15, 2003
    Assignee: Wolff-Walsrode AG
    Inventors: Werner Lange, Bernd Schriewer, Friedrich-Karl Lampert, Wilhelm Oppermann, Jörn-Bernd Pannek, René Kiesewetter
  • Patent number: 6590101
    Abstract: Fluoroquinolonecarboxylic acids can be prepared by hydrolysis of the corresponding C1-C4-alkyl esters with addition of water, acetic acid, and sulfuric acid using a drastically reduced amount of sulfuric acid if, relative to 1 mol of C1-C4-alkyl fluoroquinolonecarboxylate, less than 30 g of sulfuric acid are employed, the reaction mixture is heated to reflux for 0.5 to 8 hours, then a mixture of acetic acid, C1-C4-alkyl acetate, C1-C4-alkyl alcohol, and optionally water is distilled off, and finally the fluoroquinolonecarboxylic acid prepared is isolated.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: July 8, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Norbert Lui, Hans Panskus