Patents Assigned to Evonik Degussa GmbH
  • Low-surface area fumed silicon dioxide powder
    Patent number: 8545788
    Abstract: Fumed silicon dioxide powder with a BET surface area of 20 to 35 m2/g, characterized in that a) the number-based median particle diameter is 60 to 150 nm, and b) the proportion of particles with a diameter of 200 nm or more is at most 10%, and c) the proportion of particles with a diameter of up to 60 nm is at most 20%, based in each case on the total number of particles.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: October 1, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Stipan Katusic, Guido Zimmermann, Horst Miess, Witold Katerinak, Martin Moerters
  • Process for recovering molybdate or tungstate from aqueous solutions
    Patent number: 8545673
    Abstract: Process for recovering molybdate or tungstate from an aqueous solution, in which molybdate or tungstate is bound to a water-insoluble, cationized inorganic carrier material from the aqueous solution at a pH in the range from 2 to 6, the laden carrier material is separated off and the bound molybdate or tungstate is liberated once again into aqueous solution at a pH in the range from 6 to 14. The process is suitable for recovering molybdate or tungstate in the delignification of pulp with hydrogen peroxide in the presence of molybdate or tungstate as catalyst. The recovered molybdate or tungstate can be recycled to the delignification.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: October 1, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Thomas Dietz, Hans Ulrich Süss
  • Stable aqueous silica dispersions
    Patent number: 8545618
    Abstract: The invention relates to silica dispersions that have a long shelf-life, to a method for producing the same and to their use in the construction industry as concrete admixtures and in the paper industry for producing or coating paper.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 1, 2013
    Assignee: Evonik Degussa GmbH
    Inventor: Ulrich Fischer
  • Indium oxoalkoxides for producing coatings containing indium oxide
    Patent number: 8546594
    Abstract: The present invention relates to halogenated indium oxo alkoxides of the generic formula In6O2X6(OR)6(R?CH(O)COOR?)2(HOR)x(HNR??2)y where X?F, Cl, Br and/or I, R?C1-C15-alkyl, C1-C15-alkenyl, C1-C15-alkynyl, C1-C15-alkoxyalkyl, C6-C15-aryl- and/or C7-C15-alkoxyaryl, R??C1-C15-alkyl, C1-C15-alkenyl, C1-C15-alkynyl, C1-C15-alkoxyalkyl, C6-C15-aryl- and/or C7-C15-alkoxyaryl, R??C1-C15-alkyl, C1-C15-alkenyl, C1-C15-alkynyl, C1-C15-alkoxyalkyl, C6-C15-aryl- and/or C7-C15-alkoxyaryl, R???C1-C15-alkyl, C1-C15-alkenyl, C1-C15-alkynyl, C1-C15-alkoxyalkyl, C6-C15-aryl- and/or C7-C15-alkoxyaryl, x=0 to 10 and y=0 to 10, to processes for preparation thereof and to use thereof.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: October 1, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Steiger, Duy Vu Pham, Heiko Thiem, Alexey Merkulov, Arne Hoppe
  • SILANOL CONDENSATION CATALYSTS FOR THE CROSS-LINKING OF FILLED AND UNFILLED POLYMER COMPOUNDS
    Publication number: 20130253144
    Abstract: The invention relates to a composition of an organofunctional silane compound, particularly of a mono-unsaturated silane compound, and of an organic acid or a precursor compound which releases said organic acid, and to a method for the production of polymer compounds such as granulates and/or finished products from thermoplastic base polymers and/or monomers and/or prepolymers of the thermoplastic base polymer utilizing the composition, the organic acid, or the precursor compound which releases said organic acid. The invention also relates to the produced polymers, filled plastics such as, for example, granulates, finished products, molded bodies and/or articles such as pipes or cables. In addition, the invention relates to a kit containing the composition.
    Type: Application
    Filed: May 28, 2013
    Publication date: September 26, 2013
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Kerstin WEISSENBACH, Aristidis IOANNIDIS, Bastian BIELAWSKI
  • AMINE-CONTAINING ABSORPTION MEDIUM, PROCESS AND APPARATUS FOR ABSORPTION OF ACIDIC GASES FROM GAS MIXTURES
    Publication number: 20130247758
    Abstract: CO2 is absorbed from a gas mixture by contacting the gas mixture with an absorption medium which comprises at least water as solvent and at least one amine of formula (I) where R1 is an aliphatic radical, having 2 to 6 carbon atoms and at least one amino group, and R2 is hydrogen, a C1-4 alkyl radical or a radical R1.
    Type: Application
    Filed: November 10, 2011
    Publication date: September 26, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Rolf Schreider, Jörn Rolker, Daniel Dembkowski, Manfred Neumann, Daniel Witthaut, Michael Keup, Volker Brehme, Muhammad Irfan
  • PROCESS FOR PREPARING 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
    Publication number: 20130253226
    Abstract: The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone with HCN to form isophoronenitrile (IPN, 3-cyano-3,5,5-trimethylcyclohexanone); III. catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminative hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, hereinafter called isophoronenitrile or, in abbreviated form, IPN, to give the isophoronediamine.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 26, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Markus Galle, Gerda Grund, Axel Hengstermann, Michael D. Hinton, Rolf Hirsch, Robert Jansen, Cord Knoop, Christian Lettmann, Juergen Lippe, Martin Maier, Joerg-Joachim Nitz, Matthias Orschel, Martina Ortelt, Norbert Richter, Armin Rix, Markus Schwarz, Guido Streukens
  • ADDUCTS OF ISOCYANATOALKYLTRIALKOXYSILANES AND ALIPHATIC, ALKYL-BRANCHED DIOLS OR POLYOLS
    Publication number: 20130244043
    Abstract: Low molecular mass adduct compositions of isocyanatoalkyltrialkoxysilanes and aliphatic alkyl-branched diols or polyols are provided. The adduct compositions are liquid at temperatures of greater than 0° C. Coating compositions which provide scratch resistant clearcoat coatings upon curing are also provided.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Rainer LOMOELDER, Andre RAUKAMP, Sabine NAUMANN, Christoph NACKE, Silvia HERDA
  • METHOD FOR THE CONVERSION OF METHYLMERCAPTOPROPIONALDEHYDE FORMED FROM CRUDE ACROLEIN AND CRUDE METHYL MERCAPTAN
    Publication number: 20130245318
    Abstract: A reactive rectification column suitable for the production of 2-hydroxy-4-methylmercaptobutyric acid and/or methionine contains a weir having a height of 100 mm or more.
    Type: Application
    Filed: August 29, 2012
    Publication date: September 19, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Martin Steffan, Hans Joachim Hasselbach, Martin Koerfer, Harald Jakob, Jignesh Gangadwala
  • METHOD FOR CONVERTING SEMICONDUCTOR LAYERS
    Publication number: 20130240892
    Abstract: The present invention relates to a process for conversion of semiconductor layers, especially for conversion of amorphous to crystalline silicon layers, in which the conversion is effected by treating the semiconductor layer with a plasma which is generated by a plasma source equipped with a plasma nozzle (1). The present invention further relates to semiconductor layers produced by the process, to electronic and optoelectronic products comprising such semiconductor layers, and to a plasma source for performance of the process according to the invention.
    Type: Application
    Filed: November 10, 2011
    Publication date: September 19, 2013
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Patrik Stenner, Matthias Patz, Michael Coelle, Stephan Wieber
  • PROCESSING AID FOR THERMOPLASTIC POLYURETHANES
    Publication number: 20130245173
    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: May 13, 2013
    Publication date: September 19, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Thomas Welker, Ulrich Boes, Frank Menzel, Dieter Kuhn, Uwe Schachtely, Didier Lagneaux, Henri Sautel
  • PROCESS FOR HOMOGENEOUSLY CATALYZED, HIGHLY SELECTIVE DIRECT AMINATION OF PRIMARY ALCOHOLS WITH AMMONIA TO PRIMARY AMINES WITH A HIGH VOLUME RATIO OF LIQUID PHASE TO GAS PHASE AND/OR HIGH PRESSURES
    Publication number: 20130245276
    Abstract: The present invention relates to a process for preparing primary amines comprising the process steps A) provision of a solution of a primary alcohol in a fluid, nongaseous phase, B) contacting of the phase with free ammonia and/or at least one ammonia-releasing compound and a homogeneous catalyst and optionally C) isolation of the primary amine formed in process step B), characterized in that the volume ratio of the volume of the liquid phase to the volume of the gas phase in process step B is greater than 0.05 and/or in that process step B is carried out at pressures greater than 10 bar.
    Type: Application
    Filed: December 7, 2011
    Publication date: September 19, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Florian Klasovsky, Jan Christoph Pfeffer, Thomas Tacke, Thomas Haas, Matthias Beller, Angela Koeckritz, Jens Deutsch, Andreas Martin, Sebastian Imm
  • Low chlorine, multi-staged method for producing cycloaliphatic disocyanates
    Patent number: 8536370
    Abstract: Low chlorine, multi-staged method for producing cycloaliphatic diisocyanates. The invention relates to a multi-staged method for the continuous low-chlorine production of cycloaliphatic diisocyanates, comprising the synthesis of diaminodipheynl alkanes, the hydration thereof into the corresponding cycloaliphatic diamines and the subsequent conversion of cycloaliphatic diamines to the corresponding cycloalkylene biscarbamates and the thermal cleaving of the latter into the cycloaliphatic diisocyanates and alcohol.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: September 17, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Gerda Grund, Manfred Kreczinski, Stephan Kohlstruk, Christian Lettmann
  • Process for the production of doped metal oxide particles
    Patent number: 8535633
    Abstract: Process for the production of doped metal oxide particles, wherein the doping component is present on the surface in the form of domains, wherein in a first reaction zone, an oxidizable and/or —hydrolysable metal compound as dopant together with an atomization gas is atomized into a flow of metal oxide particles in a carrier gas, wherein the mass flow of the metal oxide particles und —the mass flow of the dopant are selected such that the doped metal oxide particles contain 10 ppm to 10 wt.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: September 17, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Kai Schumacher, Rainer Golchert, Helmut Roth, Harald Alff, Matthias Rochnia
  • Transparent molding composition
    Patent number: 8535811
    Abstract: A polyamide molding composition which can be used for production of a printable or printed item contains a) at most 90 parts by weight of a polyamide obtained from a lactam or from an amino carboxylic acid having at least 10 carbon atoms; and b) from 10 to 100 parts by weight of PA1010, wherein a total of components a) and b) is 100 parts by weight.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 17, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Kirsten Luetzeler, Franz-Erich Baumann, Sonja Bollmann, Andreas Dowe, Roland Wursche, Georg Schaefer
  • PROCESS FOR PREPARATION OF SUPPORTED CATALYSTS AND USE OF THE CATALYST FOR THE ESTERIFICATION OF FREE FATTY ACIDS IN VEGETABLE OIL
    Publication number: 20130237718
    Abstract: Process for preparation of a supported catalyst based on hydroxylated inorganic material selected from the group consisting of silica (SiO2), alumina (AL2O3), titania (TiO2), zirconia (ZrO2), lanthanum oxide (La2O3) or mixtures thereof, characterized in that the hydroxylated inorganic material is contacted with organosilicon compounds selected from the group consisting of Formula 1 i.e., [(RO)ySi—[O—(RO)ySi]y—O—Si(RO)y] or Formula 2 i.e., (RO)y—Si—R1—S2-4—R1—Si—(RO)y with R being alkyl and R1 being a linear or branched alkylene having from 1 to 5 carbon atoms and y being an integer from 1 to 3.
    Type: Application
    Filed: October 19, 2011
    Publication date: September 12, 2013
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Ralf Hausmann, Manfred Fuchs, Stefan Röder, Cristiano Trionfetti
  • Process for the production of metal oxide and metalloid oxide dispersions
    Patent number: 8529651
    Abstract: Process for the production of an aqueous dispersion of pyrogenically produced metal oxide and metalloid oxide powders with a BET surface area of between 5 and 600 m2/g, with a metal oxide or metalloid oxide content in the dispersion of between 5 and 25 wt. %, comprising the following steps: water, which is optionally adjusted to pH values of between 2 and 4 by adding acids, is circulated from a receiving vessel via a rotor/stator machine, and metal oxide or metalloid oxide powder is introduced, using a feed device, into the shear zone between the slots in the rotor teeth and the stator slots, continuously or discontinuously and with the rotor/stator machine running, in a quantity such that a predispersion with a solids content of between 20 and 40 wt.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 10, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Wolfgang Lortz, Christoph Batz-Sohn, Gabriele Perlet, Werner Will, Gerrit Schneider
  • Modified polyolefins with an exceptional profile of properties, process for preparation thereof and use thereof
    Patent number: 8530582
    Abstract: The present invention relates to modified polyolefins with atactic structural elements, to processes for preparation thereof and to the use thereof, especially as an adhesive or as a constituent of adhesives.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: September 10, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Hinnerk Gordon Becker, Lutz Mindach, Holger Kautz, Miriam Ammer
  • METHOD OF PRODUCTION OF A METHIONINE SALT
    Publication number: 20130231501
    Abstract: A reaction system suitable for production of a methionine salt contains a reactive rectification column containing a weir having a height of 100 mm or more.
    Type: Application
    Filed: August 29, 2012
    Publication date: September 5, 2013
    Applicant: Evonik Degussa GmbH
    Inventors: Hans Joachim Hasselbach, Martin Koerfer, Christof P. Gruener, Franz H. Hanrath, Juergen Stock, Jignesh Gangadwala, Horst Krull
  • PREPREGS BASED ON STORAGE-STABLE REACTIVE OR HIGHLY REACTIVE POLYURETHANE COMPOSITION WITH FIXED FILM AND THE COMPOSITE COMPONENT PRODUCED THEREFROM
    Publication number: 20130230716
    Abstract: The invention relates to prepregs based on storage-stable reactive or highly reactive polyurethane composition with fixed film and the composite component produced therefrom.
    Type: Application
    Filed: August 30, 2011
    Publication date: September 5, 2013
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Friedrich Georg Schmidt, Sandra Reemers, Arnim Kraatz