Patents Assigned to Evonik Degussa
  • Publication number: 20120202966
    Abstract: The invention relates to a method for producing polyesters and co-polyesters from lactones
    Type: Application
    Filed: August 12, 2010
    Publication date: August 9, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Emmanouil Spyrou, Friedrich Georg Schmidt, Susanne Kreischer, Andrea Voecker, Elke Gollan, Helmut Ritter, Jiawen Zhou
  • Publication number: 20120199832
    Abstract: The present invention relates to a process for producing a doped silicon layer on a substrate, comprising the steps of (a) providing a liquid silane formulation and a substrate, (b) applying the liquid silane formulation to the substrate, (c) introducing electromagnetic and/or thermal energy to obtain an at least partly polymorphic silicon layer, (d) providing a liquid formulation which comprises at least one aluminium-containing metal complex, (e) applying this formulation to the silicon layer obtained after step (c) and then (f) heating the coating obtained after step (e) by introducing electromagnetic and/or thermal energy, which decomposes the formulation obtained after step (d) at least to metal and hydrogen, and then (g) cooling the coating obtained after step (f) to obtain an Al-doped or Al- and metal-doped silicon layer, to doped silicon layers obtainable by the process and to the use thereof for production of light-sensitive elements and electronic components.
    Type: Application
    Filed: November 10, 2010
    Publication date: August 9, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Bernhard Stuetzel, Wolfgang Fahrner
  • Publication number: 20120203033
    Abstract: The invention provides a method to produce primary diamines by catalytic conversion of diols having a linear main chain of from 4 to 31 carbon atoms into the corresponding diamines. The reaction is conducted in a liquid or supercritical phase and is catalyzed by a homogeneous ruthenium-containing complex. The primary diamines obtained may be suitable for polyamide syntheses.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 9, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Franz-Erich Baumann, Matthias Ullrich, Martin Roos, Peter Hannen, Frank-Martin Petrat, Harald Haeger, Angela Koeckritz, Guido Walther, Jens Deutsch, Andreas Martin
  • Publication number: 20120202012
    Abstract: A process for the layer-by-layer production of three-dimensional objects, through selective melting and solidification of pulverulent substrates is provided. According to the process the construction chamber is inertized with an inertizing gas which is of higher density than air. An apparatus for conducting the process is also provided.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 9, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Maik Grebe, Wolfgang Diekmann, Stefan Altkemper
  • Patent number: 8236882
    Abstract: A rubber mixture which exhibits reliable processability contains (A) a rubber or mixture of rubbers, (B) a filler, (C) at least one organosilane, (D) a thiuram accelerator, and (E) a nitrogen-containing co-activator. A weight ratio of thiuram accelerator (D) to nitrogen-containing co-activator (E) is equal to or greater than 1.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: August 7, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Oliver Klockmann, Andre Hasse, Hans-Detlef Lughinsland
  • Patent number: 8236918
    Abstract: The present invention provides a linear, cyclic or branched polyether-functional siloxane or a mixture of polyether-functional siloxanes of the general formula (I) R[—O(3-h)/2Si(R1)(OR)h]x[—O(3-i-j)/2Si(R2)(R3)i(OR)j]y, (II) in which groups R are identical or different and R is essentially H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, 2-methoxyethyl or 2-hydroxyethyl or, in the case of cyclic siloxanes, may be a silyl radical of the silyl units of the formula (I), groups R1 are identical or different and R1 is a terminally blocked polyether group of the formula (II), R4—O[—R5—O]n[(—R6)m]— (II) and groups R2 are identical or different and R2 is a linear, branched or cyclic, optionally substituted alkyl group having 1 to 18 carbon atoms or a mercaptoalkyl group or an alkenyl group having 2 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms or an aryl group having 6 to 12 carbon atoms or an aminoalkyl group or the general formula (III) H2N(CH2)d[(NH)e(CH2)f]g—(CH2)3— (III) The
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: August 7, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Ekkehard Mueh, Peter Jenkner, Max Preisenberger, Burkhard Standke
  • Publication number: 20120195804
    Abstract: A reactor and a plant containing the reactor for conducting a continuous, industrial process for preparing high-purity silicon tetrachloride or high-purity germanium tetrachloride is provided. The plant contains a plasma reactor having a dielectric, a high voltage electrode and an earthed, metallic heat exchanger, in which the longitudinal axes of the dielectric, of the high-voltage electrode and of the earthed, metallic heat exchanger are oriented parallel to one another and at the same time parallel to the force vector of gravity.
    Type: Application
    Filed: April 16, 2012
    Publication date: August 2, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Jürgen LANG, Rainer NICOLAI, Hartwig RAULEDER
  • Publication number: 20120196113
    Abstract: The invention relates to a molding compound, comprising the following components: a) 60 to 96% by weight polyaryletherketone, b) 2 to 25% by weight hexagonal bornite, and c) 2 to 25% by weight talcum, wherein the sum of the parts by weight of components a), b), and c) is 100. Said compounds can be used to produce a film having a thickness of 5 to 1200 ?m, which is suitable for producing dimensionally stable circuit boards.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 2, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Joerg Blaschke, Kirsten Luetzeler, Walter Zink, Ricardo Luiz Willemann, Kathrin Salwiczek, Georg Schaefer
  • Publication number: 20120196134
    Abstract: The invention relates to a method for producing a flexible mineral building material and the building material obtained according to said method.
    Type: Application
    Filed: July 6, 2010
    Publication date: August 2, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Frank Weinelt, Ulrich Diester, Doris Pasing
  • Patent number: 8232333
    Abstract: Process for preparing ultrafine powders based on polyamides by contacting polyamides having a relative solution viscosity ?rel in the range from 1.5 to 2.0, measured in 0.5% m-cresol solution at 25° C., with an alcoholic medium in the presence of inorganic particles under the action of pressure and/or temperature to generate an at least partial solution, and then precipitating the polyamide from the at least partial solution, characterized in that a suspension of the inorganic particles suspended in the alcoholic medium is used. The resulting ultrafine polyamide powders have a specific BET surface area in the range of 5-100 m2/g; a fineness d50 of less than 70 ?m; an apparent density AD in the range from 250 to 1000 g/l; and a particle content of 0.1 to 80% by weight of inorganic particles based on the total weight of the polyamide powder. They are equally suitable for coatings and for moldings and components with improved mechanical properties.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: July 31, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Harald Haeger, Franz-Erich Baumann, Wolfgang Lortz, Christoph Batz-Sohn
  • Patent number: 8227034
    Abstract: Catalyst-coated support, method for producing the same, reactor comprising the same and use thereof. Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: July 24, 2012
    Assignees: Evonik Degussa GmbH, Uhde GmbH
    Inventors: Steffen Schirmeister, Karsten Bueker, Martin Schmitz-Niederau, Bernd Langanke, Andreas Geisselmann, Georg Markowz, Klaus Thomas Schwarz, Elias Johannes Klemm, Frank Becker, Reinhard Machnik
  • Publication number: 20120182607
    Abstract: The present invention relates to a concentrator for concentrating solar radiation and to the production thereof from polymeric materials. The concentrator according to the invention can be used in photovoltaically or in particular in solar thermally usable systems. The concentrator according to the invention allows for the efficient concentration of solar radiation onto objects such as solar cells, independent of the geometry thereof. This relates, for example, to the surface of a solar cell as it is used in concentrating photovoltaics, and also an absorber tube as it is used in concentrating solar heating, for example in the scope of the parabolic trough technology.
    Type: Application
    Filed: September 7, 2010
    Publication date: July 19, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Uwe Numrich, Thomas Arndt, Werner Arnold, Michael Olbrich
  • Publication number: 20120183464
    Abstract: The invention relates to a process for dismutating at least one halosilane and reducing the content of extraneous metal and/or a compound containing extraneous metal in the at least one halosilane and in the at least one silane obtained, by contacting at least one halosilane of the general formula I, HnSiClm (I), where n and m are integers and n=1, 2 or 3 and m=1, 2 or 3 and n+m=4, with a particulate, organic, amino-functional resin to obtain at least one silane of the general formula II, HaSiClb (II), where a and b are integers and a=0, 2, 3 or 4 and b=0, 1, 2 or 4 where a+b=4, in one step, in which the content of extraneous metal and/or compounds containing extraneous metal has been reduced compared to the halosilane of the formula I. The invention further provides for the use of this resin for dismutating halosilanes and as an absorbent of extraneous metals or compounds containing extraneous metal in a process for preparing monosilane.
    Type: Application
    Filed: May 18, 2010
    Publication date: July 19, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Ekkehard Mueh, Hartwig Rauleder, Jaroslaw Monkiewicz, Reinhoid Schork
  • Publication number: 20120181488
    Abstract: The invention relates to a liquid-phase method for producing metal oxide-containing layers from nonaqueous solution. In said method, an anhydrous composition containing i) at least one metal oxo-alkoxide of generic formula MxOy(OR)z[O(R?O)cH]aXb[R?OH]d, where M=In, Ga, Sn, and/or Zn, x=3-25, y=1-10, z=3-50, a=0-25, b=0-20, c=0-1, d=0-25, R, R?, R?=organic group, X?F, Cl, Br, I, and ii) at least one solvent is applied to a substrate, is optionally dried, and is converted into a metal oxide-containing layer. The invention also relates to the layers that can be produced using the method of the invention and to the use thereof.
    Type: Application
    Filed: August 13, 2010
    Publication date: July 19, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Juergen Steiger, Duy Vu Pham, Heiko Thiem, Alexey Merkulov, Arne Hoppe
  • Patent number: 8222406
    Abstract: Provided is a process for preparing a heterocycle by catalytic reaction of an aromatic dinitrile with an amino alcohol, wherein the process includes: initially charging into a reaction vessel the amino alcohol and a catalyst to produce a reaction mixture; adding the aromatic dinitrile into the reaction mixture, which is maintained at a reaction temperature, wherein no solvent other than the amino alcohol of formula (III) is added to the reaction mixture prior to and/or during the catalytic reaction; and after completion of the catalytic reaction, completely replacing, or substantially completely replacing, unreacted amino alcohol with a nonpolar solvent to obtain the heterocycle, wherein the unreacted amino alcohol is present in an amount of not more than 20 wt. %, preferably 3-10 wt. % or less, based on a total weight of the heterocycle.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Thomas Kuebelbaeck, Manfred Neumann, Marianne Omeis
  • Patent number: 8221890
    Abstract: A multilayer composite which has improved adhesion between the layers, with the following layers: I. an inner layer I selected from among a fluoropolymer molding composition and a polyolefin molding composition; II. a bonding layer II which has the following composition: a) from 2 to 80 parts by weight of a polyamine-polyamide graft copolymer, b) from 0 to 85 parts by weight of a polyester, c) from 0 to 85 parts by weight of a polymer selected from among polyamides, fluoropolymers and polyolefins, where the sum of the parts by weight of a), b) and c) is 100; d) not more than 50 parts by weight of additives; III. a layer III of a polyester molding composition.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Guido Schmitz, Harald Haeger, Hans Ries
  • Patent number: 8221593
    Abstract: A reactor, a plant, and a continuous, industrial process carried out therein for preparing high-purity silicon tetrachloride or high-purity germanium tetrachloride by treating the silicon tetrachloride or germanium tetrachloride to be purified, which is contaminated by at least one hydrogen-containing compound, by a cold plasma and isolating purified high-purity silicon tetrachloride or germanium tetrachloride from the resulting treated phase by fractional distillation. The treatment is carried out in a plasma reactor in which longitudinal axes of a dielectric, of a high-voltage electrode, and of a grounded, metallic heat exchanger are oriented parallel to one another and at the same time parallel to the force vector of gravity.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Juergen Erwin Lang, Rainer Nicolai, Hartwig Rauleder
  • Patent number: 8222312
    Abstract: The invention relates to radiation-curable formulations which contain adhesion promoters containing phosphoric acid and which in the cured state afford a particular degree of corrosion control for metallic substrates, and to a process for preparing them.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Emmanouil Spyrou, Marion Ebbing-Ewald
  • Patent number: 8222461
    Abstract: Disclosed herein are mixed oxide catalysts for the catalytic gas phase oxidation of alkanes, or mixtures of alkanes and olefins, for the production of aldehydes and carboxylic acids with air or oxygen in the presence of inert gases at elevated temperatures and pressures, and methods for the production of the catalyst.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 17, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Achim Fischer, Weimin Lu, Christoph Weckbecker, Klaus Huthmacher
  • Publication number: 20120177557
    Abstract: The invention relates to a process for treating a substantially water-containing amino-functional, polymeric catalyst precursor while retaining the inner porous structure thereof and the outer spherical form thereof to form a catalyst, in which the catalyst precursor is treated at mild temperatures and under reduced pressure to prepare a catalyst having a water content below 2.5% by weight. The process is preferably integrated into an industrial scale process for preparing dichlorosilane, monosilane, silane, or solar silicon or semiconductor silicon from silanes.
    Type: Application
    Filed: May 17, 2010
    Publication date: July 12, 2012
    Applicant: Evonik Degussa Gmbh
    Inventors: Hartwig Rauleder, Ekkehard Müh, Reinhold Schork, Uwe Schön