Patents Assigned to Degussa GmbH
  • PROCESS FOR INCREASING THE STABILITY OF A COMPOSITION COMPRISING POLYUNSATURATED OMEGA-3 FATTY ACIDS
    Publication number: 20170360072
    Abstract: A process for increasing the stability of a composition containing a polyunsaturated omega-3 fatty acid against oxidation proceeds by (i) providing a starting composition containing at least one polyunsaturated omega-3 fatty acid component; (ii) providing a lysine composition; (iii) admixing an aqueous, an aqueous-alcoholic or an alcoholic solution of starting composition and lysine composition, and subjecting resulting admixture to spray drying conditions subsequently, thus forming a solid product composition containing at least one salt of a cation derived from lysine with an anion derived from a polyunsaturated omega-3 fatty acid; the product composition exhibiting a solvent content SC selected from the following: SC<5 wt %, SC<3 wt %, SC<1 wt %, or SC<0.5 wt %.
    Type: Application
    Filed: December 17, 2015
    Publication date: December 21, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Guenter KNAUP, Milan LATINOVIC, Michael SCHWARM
  • METHOD FOR PRODUCING DOPED POLYCRYSTALLINE SEMICONDUCTOR LAYERS
    Publication number: 20170365733
    Abstract: The present invention relates to a method for producing highly doped polycrystalline semiconductor layers on a semiconductor substrate, wherein a first Si precursor composition comprising at least one first dopant is applied to one or more regions of the surface of the semiconductor substrate; optionally a second Si precursor composition comprising at least one second dopant is applied to one or more other regions of the surface of the semiconductor substrate, where the first dopant is an n-type dopant and the second dopant is a p-type dopant or vice versa; and the coated regions of the surface of the semiconductor substrate are each converted, so as to form polycrystalline silicon from the Si precursor. The invention further relates to the semiconductor obtainable by the method and to the use thereof, especially in the production of solar cells.
    Type: Application
    Filed: November 17, 2015
    Publication date: December 21, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Christoph MADER, Odo WUNNICKE, Susanne MARTENS, Jasmin LEHMKUHL, Christian GUENTHER
  • PROCESS FOR PREPARING 3 AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE
    Publication number: 20170362163
    Abstract: Process for preparing isophoronediamine, characterized in that A) isophoronenitrile is subjected directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and possibly further additions, and in the presence or absence of organic solvents; or B) isophoronenitrile is first converted fully or partly in at least two or more than two stages to isophoronenitrile imine, and this isophoronenitrile imine is subjected to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with other components and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.
    Type: Application
    Filed: January 26, 2016
    Publication date: December 21, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Stephan Kohlstruk, Anne Rittsteiger, Alexander Martin Rüfer, Norbert Schlüter, Sven Schneider, Sabrina Sowka, Guido Streukens, Stefan Röder, Monika Berweiler
  • Production of n-pentanal from low-butene feedstock mixtures
    Patent number: 9845276
    Abstract: The invention is concerned with the issue of how to produce n-pentanal by hydroformylation from feedstock mixtures comprising a small proportion of n-butene and a large proportion of n-butane. Specifically, solutions for further optimizing established processes for hydroformylation of such low-butene mixtures in terms of material utilization are sought. The present invention has for its object to enhance the material utilization of the feedstock mixture in the production of n-pentanal from feedstock mixtures having a small proportion of n-butene and a large proportion of n-butane. The process shall be capable of economic operation on an industrial scale. In particular an existing oxo plant shall be honed to achieve better raw material utilization.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: December 19, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Robert Franke, Lena Altmann, Corinna Hecht, Benedikt Dercks, Hanna Spohr, Horst-Werner Zanthoff
  • Process and apparatus for preparation of octachlorotrisilane
    Patent number: 9845248
    Abstract: The invention relates to a process and an apparatus for controlled preparation of octachlorotrisilane from monomeric chlorosilanes, by subjecting the chlorosilanes to a thermal plasma.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: December 19, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Erwin Lang, Hartwig Rauleder, Ekkehard Mueh, Imad Moussallem
  • Surface treatment of particles and their use
    Patent number: 9845391
    Abstract: The invention relates to polymer compositions containing inorganic or organic particles which either have been surface-treated before the production of the compositions or are dispersed by special polyether-modified siloxanes through the production of the compositions.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: December 19, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Kathrin Lehmann, Angela Nawracala, Frauke Henning, Christian Mund
  • PROCESS FOR DEHUMIDIFYING MOIST GAS MIXTURES
    Publication number: 20170354923
    Abstract: The invention relates to a process for dehumidifying a moist gas mixture. The invention further relates to an apparatus for dehumidifying a moist gas mixture and to the use of said apparatus in the process according to the invention.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Olivier Zehnacker, Benjamin WILLY, Xinming WANG, Rolf SCHNEIDER
  • PROCESS FOR DEHUMIDIFYING MOIST GAS MIXTURES
    Publication number: 20170354921
    Abstract: The invention relates to a process for dehumidifying a moist gas mixture.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Olivier ZEHNACKER, Benjamin WILLY, Xinming WANG, Rolf SCHNEIDER
  • PROCESS FOR DEHUMIDIFYING MOIST GAS MIXTURES
    Publication number: 20170354924
    Abstract: The invention relates to a process for dehumidifying a moist gas mixture and to the absorption medium used in the process. The invention further relates to an apparatus for dehumidifying a moist gas mixture and to the use of said apparatus in the process according to the invention.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Muhammad Irfan, Jörn Rolker, Rolf Schneider
  • METHOD OF PREPARING A HIGH PURITY IMIDAZOLIUM SALT
    Publication number: 20170355682
    Abstract: The present invention encompasses a novel method for synthesizing highly pure salts of the general formula Q+A?, wherein the starting materials are reacted in the presence of water, and wherein Q+ is and wherein A? is
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Benjamin WILLY, Olivier ZEHNACKER, Rolf SCHNEIDER, Xinming WANG, Werner ESCHER, Stefan MÜNZNER, Christoph HILLER
  • METHOD OF PREPARING A HIGH PURITY IMIDAZOLIUM SALT
    Publication number: 20170355680
    Abstract: The present invention encompasses a novel method for synthesizing highly pure salts of the general formula Q+A?, wherein Q+ is: and wherein A? is
    Type: Application
    Filed: June 12, 2017
    Publication date: December 14, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Xinming Wang, Olivier ZEHNACKER, Benjamin WILLY, Rolf SCHNEIDER
  • Method for recovering a copper sulfide concentrate from an ore containing an iron sulfide
    Patent number: 9839917
    Abstract: In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide, wet grinding of the ore with grinding media made of high chromium cast iron alloy having a chromium content of from 10 to 35% by weight is combined with an addition of hydrogen peroxide to the conditioned mineral pulp before or during flotation in order to improve concentrate grade and recovery of copper sulfides.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: December 12, 2017
    Assignees: Evonik Degussa GmbH, Magotteaux International S.A.
    Inventors: Christopher Greet, Gerhard Arnold, Ingo Hamann, Alan Hitchiner
  • Process for reducing the chlorine content of organomonophosphites using two solutions
    Patent number: 9840524
    Abstract: Process with universal usefulness for reducing the chlorine content of organomonophosphites, using two solutions.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: December 12, 2017
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Katrin Marie Dyballa, Robert Franke
  • Use of polyesters having inherent flame protection in adhesives and sealants
    Patent number: 9840581
    Abstract: The present invention relates to the use of polyesters with inherent flame retardancy as or in adhesives, sealants and coatings, to polyesters with inherent flame retardancy and to processes for production thereof.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: December 12, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Christina Diehl, Gabriele Brenner, Bernhard Schleimer
  • Method of preparing a high purity imidazolium salt
    Patent number: 9840473
    Abstract: The present invention encompasses a novel method for synthesizing highly pure salts of the general formula Q+A?, wherein Q+ is: and wherein A? is
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: December 12, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Xinming Wang, Olivier Zehnacker, Benjamin Willy, Rolf Schneider
  • INNOVATIVE HYDROPHILIC POLYISOCYANATES WITH IMPROVED STORAGE STABILITY
    Publication number: 20170349693
    Abstract: The invention relates to innovative, water-dispersible, hydrophilic polyisocyanates and polyisocyanate mixtures, to a process for preparing them, to compositions comprising the hydrophilic polyisocyanates of the invention, and to their use as a starting component in the production of polyurethane plastics, more particularly as crosslinkers for water-soluble or water-dispersible film-forming, adhesives or sealant binders or binder components having groups which are reactive towards isocyanate groups.
    Type: Application
    Filed: August 21, 2017
    Publication date: December 7, 2017
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Emmanouil Spyrou, Evelyn Albrecht, Iris Brueckner, Annegret Lilienthal, Wiebke Stache, Judith Schoder
  • SINGLY PROTECTED 2,2' -DIHYDROXYBIARYLS
    Publication number: 20170349520
    Abstract: Novel singly protected 2,2?-dihydroxybiaryls, electrochemical process for preparation of singly protected 2,2?-dihydroxybiaryls.
    Type: Application
    Filed: July 23, 2015
    Publication date: December 7, 2017
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Katrin Marie DYBALLA, Robert FRANKE, Dirk FRIDAG, Siegfried R. WALDVOGEL, Bernd ELSLER, Anton WIEBE
  • Organodiaryl selenoxides and process for preparation thereof
    Patent number: 9834511
    Abstract: Novel organodiaryl selenoxides and processes for preparation thereof, and use thereof as ligand in complexes.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: December 5, 2017
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Katrin Marie Dyballa, Robert Franke, Claudia Weilbeer, Armin Börner, Detlef Selent
  • ORGANOFUNCTIONAL SILICON PARTICLES, PROCESS FOR THE PRODUCTION THEREOF AND USE THEREOF
    Publication number: 20170342095
    Abstract: Organofunctional silicon particles are covalently functionalized on their surface with at least one organic compound, for example a plurality of —O—(C1-C48)-alkyl compounds. The functionalization of the surface of the silicon particles makes it possible to adjust the properties of fluids in terms of their profile of properties by addition of the modified silicon particles. For instance, the alkoxy-functionalized silicon particles may preferably be added to a motor oil as additives for reducing viscosity.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Applicant: Evonik Degussa GmbH
    Inventors: Juergen Erwin LANG, Bodo FRINGS, Michael KROELL, Goswin UEHLENBRUCK
  • Process for producing hollow silicon bodies
    Patent number: 9831364
    Abstract: Hollow bodies having a silicon-comprising shell, are produced by, in a gas comprising at least one silane of the general formula SinH2n+2?mXm with n=1 to 4, m=0 to 2n+2 and X=halogen, (a) generating a non-thermal plasma by an AC voltage of frequency f, or operating a light arc, or introducing electromagnetic energy in the infrared region into the gas, giving a resulting phase which (b) is dispersed in a wetting agent and distilled, and then (c) the distillate is contacted at least once with a mixture of at least two of the substances hydrofluoric acid, nitric acid, water, giving a solid residue comprising hollow bodies having a silicon-comprising shell after the conversion reaction of the distillate with the mixture has abated or ended.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: November 28, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Erwin Lang, Hartwig Rauleder, Julia Lyubina, Janaina Marinas Pérez