Patents Assigned to Evonik Degussa GmbH
  • Low temperature curable polyurethane compositions containing uretdione groups
    Patent number: 7709589
    Abstract: The invention relates to high-reactivity polyurethane compositions. The invention further relates to low temperature curable polyurethane compositions which contain uretdione groups, particularly useful for polyurethane powder coating compositions and adhesive compositions, and to processes for preparing and using the same.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: May 4, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Dirk Hoppe
  • Separator provided with asymmetrical pore structures for an electrochemical cell
    Patent number: 7709140
    Abstract: A separator for an electrochemical cell, comprising (A) a flexible perforate support, and (B) a porous ceramic material which fills the perforations in the support and is suitable for receiving an ion-conducting electrolyte, wherein the porous ceramic material comprises a first porous layer which is characterized by an average pore size and also at least one second porous layer for contacting with an electrode, the second porous layer having an average pore size which is smaller than the average pore size of the first porous layer.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: May 4, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Volker Hennige, Christian Hying, Gerhard Hoerpel, Petr Novak, Jens Vetter
  • SILICAS
    Publication number: 20100105818
    Abstract: The invention provides structurally modified, pyrogenically prepared silicas obtained by reaction of pyrogenic silicas with cyclic polysiloxanes of the type —[O—Si(R2)]n—, where R is a C1 to C6 alkyl group and n is 3 to 9, and subsequent structural modification of the silanized silicas obtained. The invention further provides an adhesive comprising the structurally modified, pyrogenically prepared silicas.
    Type: Application
    Filed: May 6, 2008
    Publication date: April 29, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Juergen Meyer, Mario Scholz
  • DISPERSION COMPRISING CERIUM OXIDE AND COLLOIDAL SILICON DIOXIDE
    Publication number: 20100102268
    Abstract: A dispersion comprising cerium oxide particles and colloidal silicon dioxide particles, where—the zeta potential of the silicon dioxide particles is negative and that of the cerium oxide particles is positive or equal to zero, and the zeta potential of the dispersion is negative overall, and—the mean particle diameter of the cerium oxide particles is not more than 200 nm and that of the silicon dioxide particles is not more than 100 nm, the mean particle diameter of the cerium oxide particles being greater than that of the silicon dioxide particles—the cerium oxide/silicon dioxide weight ratio is from 1.1:1 to 100:1 and—the pH of the dispersion is from 7.5 to 10.5.
    Type: Application
    Filed: November 9, 2007
    Publication date: April 29, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Michael Kroell, Stefan Heberer, Katharina Dauth
  • MOISTURE-CURING HOT-MELT ADHESIVE WITH GOOD ADHESION
    Publication number: 20100105831
    Abstract: The present invention relates to the use of polyesters based on dicarboxylic acids having an odd carbon number and polyols having an odd carbon number as or in adhesives. The present invention further provides adhesives containing the stated polyesters, and also their use for producing bonds.
    Type: Application
    Filed: May 20, 2008
    Publication date: April 29, 2010
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Gabriele Brenner, Rene Koschabek
  • Rubber mixtures
    Patent number: 7705076
    Abstract: The invention relates to rubber mixtures, comprising: (A) at least one rubber, (B) at least one oxidic filler and (C) at least one (haloorganyl)alkylpolyethersilane of the general formula (X)(X?)(X?)Si—RI-Hal. The rubber mixtures can be used for production of mouldings.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: April 27, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Karsten Korth, Andre Hasse, Dirk Laur, Ingo Kiefer, Oliver Klockmann, Philipp Albert, Manuel Friedel
  • Novel Working Media for Refrigeration Processes
    Publication number: 20100095703
    Abstract: A working medium for refrigeration processes comprising at least one sorbent material and at least one refrigerant, characterized in that the sorbent material contains at least one nonvolatile organic salt which is liquid under standard conditions, or a mixture of organic salts, with the proviso that this is liquid under standard conditions, wherein the salt or the mixture has a thermal stability above 150° C.
    Type: Application
    Filed: May 24, 2006
    Publication date: April 22, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Carsten Jork, Matthias Seiler, Bernd Weyerhausen
  • PREPARATION AND USE OF METHIONYLMETHIONINE AS FEED ADDITIVE FOR FISH AND CRUSTACEANS
    Publication number: 20100098801
    Abstract: An animal feed mixture containing DL-methionyl-DL-methionine and salts thereof for animals kept in aquacultures is provided. Methods for preparing DL-methionyl-DL-methionine of formula (I) and methods to fractionate the diasteriomeric forms obtained are also provided.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 22, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christoph Kobler, Thomas Haeussner, Christoph Weckbecker
  • Alleles of the OpcA gene from coryneform bacteria
    Patent number: 7700313
    Abstract: The invention relates to mutants and alleles of the opcA gene of coryneform bacteria, which encode variants of the OpcA subunit of glucose 6-phosphate dehydrogenase (EC: 1.1.1.49), and to processes for preparing amino acids, in particular L-lysine and L-tryptophan, by using bacteria which harbor said alleles.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: April 20, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Natalie Schischka, Brigitte Bathe, Georg Thierbach
  • Slip containing zirconium dioxide and aluminum oxide and shaped body obtainable therefrom
    Patent number: 7700034
    Abstract: Slip containing at least one aluminium oxide powder and at least one unstabilized zirconium dioxide powder, wherein a) the zirconium dioxide powder i) has a mean particle diameter of less than 300 nm, ii) shows only the monoclinic phase and the tetragonal phase in the X-ray diffraction pattern, with the proportion of tetragonal phase at room temperature being from 20 to 70%, and iii) is present in a proportion of from 2 to 20% by weight, based on the total amount of the slip, b) the aluminium oxide powder i) has a mean particle diameter of more than 300 nm and ii) is present in a proportion of from 80 to 98% by weight, based on the total amount of the slip, and c) the solids content, as the sum of aluminium oxide and zirconium dioxide, is from 50 to 85% by weight, based on the total amount of the slip.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: April 20, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Monika Oswald, Klaus Deller, Wolfgang Kollenberg, Dieter Nikolay
  • Process for preparing amines
    Patent number: 7700805
    Abstract: An amine is prepared by cleaving a carbamate of the formula I wherein R1=hydrogen, alkyl, aryl or phenyl group, R2=alkyl, aryl or phenyl group, wherein R1 and R2 are independently substituted or unsubstituted, wherein the cleaving of the carbamate is performed in the presence of an acid of the formula II wherein R3, R4 and R5 are independently alkyl or phenyl group, wherein R1, R2, R3, R4 and R5 are the same or different.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 20, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Günther Köhler, Manfred Neumann, Marianne Omeis
  • HYDROPHOBIC ZINC OXIDE POWDER
    Publication number: 20100092411
    Abstract: Hydrophobic zinc oxide powder in the form of partially or completely coated aggregates of zinc oxide primary particles having a carbon content of from 0.4 to 1.5% by weight, based on the hydrophobic zinc oxide powder, and a BET surface area of from 25 to 100 m2/g, where the coated aggregates are present to 0 to <10% in a circular form, 15 to <30% in an ellipsoidal form, to <30% in a linear form, 40 to <70% in a branched form, and the sum of the different forms is 15 100% and the coating comprises chemically bonded linear and/or branched monoalkylsilyl groups Si-alkyl and/or dialkylsilyl groups Si-(alkyl)2 having 1 to 20 carbon atoms.
    Type: Application
    Filed: August 1, 2007
    Publication date: April 15, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Stipan Katusic, Guido Zimmermann, Juergen Meyer
  • RADIATION-CURABLE FORMULATIONS COMPRISING SILICA AND DISPERSANT AND FEATURING ENHANCED CORROSION CONTROL ON METAL SUBSTRATES
    Publication number: 20100093884
    Abstract: The invention relates to silica-containing radiation-curable formulations which in the cured state offer a particular degree of corrosion control for metallic substrates.
    Type: Application
    Filed: December 4, 2007
    Publication date: April 15, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Emmanouil Spyrou, Holger Loesch, Pedro Cavaleiro
  • METHOD FOR PRODUCTION OF TRIMETHYLHEXAMETHYLENEDIAMINE
    Publication number: 20100094058
    Abstract: Process for preparing trimethylhexamethylenediamine The invention relates to an improved process for preparing trimethylhexamethylenediamine, hereinafter referred to as TMD for short, by hydrogenation of trimethylhexamethylenedinitrile, hereinafter referred to as TMN for short, in the presence of a shaped hydrogenation catalyst of the Raney type.
    Type: Application
    Filed: January 30, 2008
    Publication date: April 15, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Christian Lettmann, Gerda Grund, Juergen Lippe, Cord Knoop
  • PROCESSING AID FOR THERMOPLASTIC POLYURETHANES
    Publication number: 20100092710
    Abstract: A processing aid is used in the processing of thermoplastic polyurethanes to give various articles including a self-supporting film. The processing aid contains a) 10-50% by weight of hydrophobized, at least partially aggregated, metal oxide particles selected from the group consisting of aluminium oxide, silicon dioxide and mixtures thereof, b) 20-75% by weight of one or more thermoplastic polyurethanes, c) 0.5-25% by weight of one or more isocyanates, d) 0.5-15% by weight of one or more compounds which act as lubricant and dispersant, the sum of the constituents a) to d) amounting to at least 90% by weight, based on a total weight of said processing aid.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 15, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
  • Absorbents, process for the production thereof and use thereof
    Patent number: 7695546
    Abstract: An adsorbent for organic compounds consisting of filler granules, which contain 20 to 99.9 wt. % of fillers and a binder. The adsorbent is produced by mixing at least one binder with at least one filler and performing granulation in a mixing or granulation apparatus. The adsorbent may be used for adsorbing and/or absorbing organic and/or inorganic substances from a liquid or gaseous phase.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: April 13, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Matthias Schmitt, Martin Kuge, Reinhard Stober, Udo Görl, Jürgen Leimann, Susanne Esser, Peter Kopietz, Silke Teike
  • DISPERSION COMPRISING CERIUM OXIDE AND SHEET SILICATE
    Publication number: 20100083584
    Abstract: A dispersion comprising cerium oxide particles and particles of one or more sheet silicates, where the zeta potential of the sheet silicate particles is negative and that of the cerium oxide particles is positive or equal to zero, and the zeta potential of the dispersion is negative overall, the mean particle diameter of the cerium oxide particles and the mean particle diameter of the sheet silicate particles is not more than 100 nm and the pH of the dispersion is from 7.5 to 10.5, preferably from 9 to 10.
    Type: Application
    Filed: December 19, 2007
    Publication date: April 8, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Michael Kroell, Stefan Heberer, Katharina Dauth
  • FEEDBACK RESISTANT ACETOHYDROXY ACID SYNTHETHASE MUTANTS
    Publication number: 20100086966
    Abstract: The present invention provides nucleotide sequences coding for acetohydroxy acid synthetase (AHAS) mutants, the mutated enzymes themselves and a process for the fermentative production of branched-chain amino acids using these enzymes in specific hosts in which genes which code for the modified acetohydroxy acid synthetase (AHAS) are expressed.
    Type: Application
    Filed: July 1, 2009
    Publication date: April 8, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Miroslav PATEK, Veronika Elisakova
  • Catalyst for the synthesis of alkyl mercaptan and process for the production thereof
    Patent number: 7691776
    Abstract: The invention relates to an oxidic catalyst containing cesium and tungsten for the synthesis of alkyl mercaptans from alkanols and hydrogen sulfide, and to a process for the production of this catalyst, wherein the molar ratio of cesium to tungsten is <2:1.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: April 6, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Hubert Redlingshöfer, Christoph Weckbecker, Andreas Dörflein, Michael Rückriegel
  • METHOD FOR PRODUCING HIGHER SILANES
    Publication number: 20100080746
    Abstract: The invention relates to a method for producing dimeric and/or trimeric silicon compounds, in particular silicon halogen compounds. The claimed method is also suitable for producing corresponding germanium compounds. The invention also relates to a device for carrying out said method to the use of the produced silicon compounds.
    Type: Application
    Filed: December 20, 2007
    Publication date: April 1, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Juergen Erwin Lang, Hartwig Rauleder, Ekkehard Mueh