Patents Represented by Attorney Godfried R. Akorli
  • Patent number: 6989038
    Abstract: The invention relates to novel mixtures of sulfuric esters and specific sulfuric esters that are useful as leveling agents for the dyeing of nitrogenous fiber materials and to a process for their preparation by reacting sulfuryl chloride with specific alcohols.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: January 24, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventor: Uwe Vogt
  • Patent number: 6951903
    Abstract: A thermoplastic molding composition that features a combination of extremely good toughness, good processability, adjustable surface gloss, good inherent color and reduced opacity is disclosed. The composition contains A) a graft rubber that is the product of free-radical emulsion polymerization using a peroxodisulfate initiator, B) a graft rubber that is the product of free-radical emulsion polymerization using an azo compound initiator and C) a graft polymer that is the product of solution, bulk or suspension polymerization.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: October 4, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventor: Herbert Eichenauer
  • Patent number: 6927302
    Abstract: The present invention encompasses a process for preparing arylolefins by reacting one or more arylamines with one or more organic nitrites, in the presence of one or more olefins which bear at least one hydrogen atom on the double bond and in the presence of acid and in the presence of palladium or one or more palladium compounds.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: August 9, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Markus Eckert, Albert Schnatterer, Walter Lange
  • Patent number: 6927967
    Abstract: Electrolytic capacitor powder substrates are provided of refractory metal nitrides to reduce instability at a substrate-oxide (as formed) interface whereby the resultant capacitor sensitivity to hear, bias and frequency is reduced.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: August 9, 2005
    Assignee: H. C. Starck Inc.
    Inventor: Terrance B. Tripp
  • Patent number: 6926943
    Abstract: The invention relates to a write-once optical data carrier in which organic and/or inorganic light-absorbing compounds are used as the information layer, especially for high-density optical data carriers which function with a blue laser in the wavelength range of 360-460 nm. The invention also relates to the application of the above-mentioned light-absorbing compound to a suitable substrate (especially polycarbonate), e.g., by spin coating.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: August 9, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Friedrich-Karl Bruder, Karin Hassenrück
  • Patent number: 6924317
    Abstract: The present invention relates to a process for producing monodisperse anion-exchanger gels with high stability, purity and coarse particle size greater than 800 ?m starting from a monodisperse bead polymer with a swelling index of from 2.5 to 7.5 and more than one subsequent feed procedure without any separation between the polymerization steps and then modifying to give the anion exchanger.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: August 2, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lothar Feistel, Gerold Schade, Hubertus Mittag
  • Patent number: 6892993
    Abstract: A load bearing article (1) is described and includes a plurality of elongated shells (20) having a plurality of internal reinforcing ribs (50) fixedly attached within the hollow interior (35) of each shell (20), the shells (20) reside substantially within a common plane and are fixedly attached together by means of an external molded plastic structure (53). Each elongated shell (20) has a plurality perforations (e.g., perforations 38, 41, 44 and 45) having edges. A portion of the plastic material of the internal reinforcing ribs (50) and the external molded structure (53) extends through at least some of the perforations in each shell (20), and the edges of the perforations are embedded in the plastic material extending therethrough, thereby fixedly attaching the internal reinforcing ribs (50) within and the external molded structure (53) to each shell (20). The load bearing surface (87) of the load bearing article (1) comprises (or is defined by at least) the external molded structure (53) (e.g.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: May 17, 2005
    Assignee: Lanxess Corporation
    Inventor: Timothy A. Palmer
  • Patent number: 6888002
    Abstract: The invention relates to novel transition metal complexes containing at least one diaminocarbene ligand, to processes for preparing these transition metal complexes and to their use as catalysts in organic reactions.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 3, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang A. Herrmann, Karin Denk
  • Patent number: 6881830
    Abstract: Metal complexes of metals of the scandium group with an azo compound which conforms to the formula (I) or to one of its tautomeric structures where R is OH, NH2, NH—CN, arylamino or acylamino, R? is NH2, NH—CN, arylamino or acylamino and R1 and R1? are independently —OH or —NH2.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: April 19, 2005
    Assignee: Bayer Chemicals AG
    Inventors: Ulrich Feldhues, Frank Linke, Ronald Göbel, Udo Herrmann, Sabine Endert
  • Patent number: 6875416
    Abstract: The invention relates to a method for producing lithium-transition metal mixtures of general formula Lix(M1yM21-y)nOnz, wherein M1 represents nickel, cobalt or manganese, M2 represents chromium, cobalt, iron, manganese, molybdenum or aluminium, and is different from M1, n is 2 if M1 represents manganese and is 1 otherwise, x is comprised between 0.9 and 1.2, y is comprised between 0.5 and 1.0 and z is comprised between 1.9 and 2.1. According to the inventive method, an intimate mixture composed of transition metal compounds containing oxygen and of a lithium compound containing oxygen is calcinated, said mixture being obtained by processing a solid powder transition metal compound with a solution of said lithium compound, and then drying. At least the M1 compound is used in powder form having a specific surface of at least 20 m2/g (BET) and calcination is carried out in a fluidised bed.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: April 5, 2005
    Assignee: H. C. Starck GmbH & Co
    Inventors: Mathias Benz, Wolfgang Kummer, Evelyn Pross, Josef Schmoll, Wolfgang Schweda, Daniel Duff, Ricarda Leiberich, Christoph Schild, Ulrich Krynitz, Juliane Meese-Marktscheffel, Viktor Stoller
  • Patent number: 6849196
    Abstract: The invention relates to a process for the preparation of magnetite particles and to their use.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: February 1, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventor: Ulrich Meisen
  • Patent number: 6849104
    Abstract: High purity refractory metals, valve metals, refractory metal oxides, valve metal oxides, or alloys thereof suitable for a variety of electrical, optical and mill product/fabricated parts usages are produced from their respective oxides by metalothermic reduction of a solid or liquid form of such oxide using a reducing agent that establishes (after ignition) a highly exothermic reaction, the reaction preferably taking place in a continuously or step-wise moving oxide such as gravity fall with metal retrievable at the bottom and an oxide of the reducing agent being removable as a gas or in other convenient form and unreacted reducing agent derivatives being removable by leaching or like process.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: February 1, 2005
    Assignee: H. C. Starck Inc.
    Inventors: Leonid N. Shekhter, Terrance B. Tripp, Leonid L. Lanin, Anastasia M. Conlon, Howard V. Goldberg
  • Patent number: 6846885
    Abstract: The present invention provides a novel process for the preparation of isoolefin copolymers in the presence of zirconium halides or hafnium halides or mixtures thereof and organic nitro compounds, especially for the preparation of butyl rubbers, as well as isoolefin copolymers composed of isobutene, isoprene and, optionally, further monomers.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: January 25, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Langstein, Martin Bohnenpoll
  • Patent number: 6846854
    Abstract: A method for preparing encapsulated red phosphorus is disclosed. The method entails obtaining a material system that contains dispersed particulate red phosphorus having a mean particle size of 0.1 to 100 ?m in an aqueous phase that comprise urea, formaldehyde and a water-soluble silicon dioxide precursor, adding to the material system a sufficient amount of acid to lower the pH to 0 to 5 and maintaining the resulting acidic system at a temperature of 80 to 120° C. for a period longer than one hour. The encapsulated red phosphorus of the invention is suitable for using as a flame retarding agent for plastics molding compositions.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: January 25, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Wagner, Wolfgang Podszun, Henricus Peerlings
  • Patent number: 6846769
    Abstract: The present invention relates to vanadium-imido-phosphoraneiminato compounds, to compositions containing vanadium-imido-phosphoraneiminato compounds, which compositions are suitable especially as catalysts for the polymerization of olefins, especially for ethylene/propylene or ethylene/?-olefin copolymerization and the terpolymerization of those monomers with dienes.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: January 25, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Arndt-Rosenau, Martin Hoch, Jörg Sundermeyer, Jennifer Kipke, Martin Lemke
  • Patent number: 6844411
    Abstract: The present invention is relates to a process for the preparation of an isoolefin polymer containing repeating units derived from at least one isoolefin, at least one divinyl aromatic monomer and, optionally, additional copolymerizable monomers, wherein the content of unreacted vinyl groups from the aromatic monomer is predicted by means of FTIR measurements. The present invention is related to a process for the preparation of an isoolefin polymer comprising repeating units derived from at least one isoolefin, at least one divinyl aromatic monomer and, optionally, further copolymerizable monomers, wherein the content of unreacted vinyl groups from the aromatic monomer is predicted by means of FTIR measurements and said prediction is subsequently used to alter at least one process parameter.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: January 18, 2005
    Assignee: Bayer Inc.
    Inventors: Dave Syme, Adam Gronowski, Gabor Kaszas, Kenneth Norman Watson
  • Patent number: 6841642
    Abstract: A butyl polymer having improved processability is described, together with a process for production thereof. The butyl polymer derived from a reaction mixture which contains: (i) a monomer mixture comprising a C4 to C7 monoolefin monomer (preferably isobutylene) and a C4 to C14 multiolefin monomer (preferably isoprene); (ii) a multiolefin cross-linking agent (preferably divinyl benzene); and (iii) a chain transfer agent (preferably diisobutylene (2,2,4-trimethyl-1-pentene)). The subject butyl polymer has an improved balance of cold flow, filler dispersion, extrusion rate and die swell.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: January 11, 2005
    Assignee: Bayer Inc.
    Inventor: Gabor Kaszas
  • Patent number: 6841648
    Abstract: The present invention relates to polymers which are modified by functional end groups and are based on conjugated dienes or on conjugated dienes and vinylaromatic compounds, a process for their preparation and their use for the production of rubber shaped articles of all types, in particular for the production of tires and tire components, such as tire treads.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: January 11, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Grün, Wilfried Braubach
  • Patent number: 6835842
    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: April 10, 2003
    Date of Patent: December 28, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann Uhr, Oliver Kretschik, Martin Kugler, Peter Wachtler
  • Patent number: 6833429
    Abstract: A reinforced polyamide molding composition is disclosed. Characterized in that its viscosity at a shear velocity of 10 s−1 is greater than 1000 Pas and a shear velocity of 1000 s−1 is less than 300 Pas, at processing temperatures of 40 to 80° C. above its melting point, the composition is particularly suitable for thermoforming applications.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: December 21, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dirk Pophusen, Detlev Joachimi, Jürgen Röhner