Abstract: The invention relates to a method for producing organosilanes of general formula I, [R(R)(R?O)Si—R?—]2Sm??I by reaction of (halo-organo)alkoxysilanes of formula II, [R(R)(R?O)Si—R?-Hal??II with a sulfuring reagent, selected from alkaline hydrogensulfide, alkaline sulfide Me2S, alkaline polysulfide Me2Sg and any combination thereof and optionally additionally with sulfur and/or with H2S in a solvent, the alkaline hydroxy content of all materials used being <0.44 wt. %.
Type:
Grant
Filed:
June 11, 2007
Date of Patent:
March 20, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Karsten Korth, Philipp Albert, Susann Witzsche, Ingo Kiefer, Jörg Kiefer, Stefan Lotter, Jaroslaw Monkiewicz, Jörg Schmidt
Abstract: Transparent, electrically conductive layer, a process for producing the layer and its use, wherein the layer is based on at least one compound of the formula 1 wherein the substituents are as defined.
Type:
Grant
Filed:
September 30, 2010
Date of Patent:
March 20, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Thomas Luethge, Rita Fuegemann, Martina Inhester, Matthias Driess, Yilmaz Aksu
Abstract: The present invention relates to a process for the preparation of an aerogel in the form of spherules or beads and the use thereof for thermal or sound insulation.
Abstract: The present invention refers to a method for the preparation of 2-keto carboxylic acid having the general formula R1—CO—COOH, wherein R1 is a branched alkyl group having 3 to 7 carbon atoms, or a salt thereof, comprising a fermentation step wherein a microorganism is grown in a culture medium in order to provide a culture broth containing 2-keto carboxylic acid or a salt thereof.
Type:
Application
Filed:
May 10, 2010
Publication date:
March 15, 2012
Applicant:
Evonik Degussa GmbH
Inventors:
Andreas Karau, Nicolas Morin, Robert Gerstmeir
Abstract: A composite of a lignocellulosic material and a plastic is obtained by grafting an organosilane to the plastic, to obtain a grafted plastic; and compounding the grafted plastic with the lignocellulosic material, to obtain the composite.
Type:
Application
Filed:
July 29, 2009
Publication date:
March 15, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Kerstin Weissenbach, Aristidis Ioannidis, Doris E. Simoes
Abstract: A low-catalyst-content isocyanate mixture containing at least one of a carbodiimide group and a uretonimine groups, obtained by: reacting at least one monomeric diisocyanate (A) in the presence of phosphorus-containing catalyst (B), to obtain a reaction mixture comprising carbodiimide, where the reaction does not take place to complete conversion of the diisocyanate (A) and 1-80% by weight of the diisocyanate (A) employed remains in the reaction mixture as excess diisocyanate; and subsequently simultaneously removing, by distillation, a fraction of the excess of diisocyanate and the catalyst (B), to obtain the isocyanate mixture and a distillate, where the isocyanate mixture has a monomeric diisocyanate (A) content of 0.5%-20% by weight, based on the monomeric diisocyanate (A) employed, and a catalyst (B) content of 0% to 20% by weight, based on the catalyst (B) employed. In addition, a process for preparing a low-catalyst-content isocyanate mixture.
Abstract: The invention relates to a recombinant coryneform bacterium which secretes an organic chemical compound and in which the sugR gene which codes for a polypeptide having the activity of an SugR regulator has been attenuated. The invention further relates to a processes for using this bacterium for the fermentative preparation of organic chemical compounds.
Abstract: A multilayer composite which comprises the following layers: I. an interior layer I selected from among a fluoropolymer molding composition and a polyolefin molding composition; II.
Type:
Grant
Filed:
August 10, 2005
Date of Patent:
March 13, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Guido Schmitz, Harald Haeger, Hans Ries
Abstract: Absorbates having a high loading of particular substances for use in plant protection compositions, the use of a special process for the preparation of the absorbates and products for plant protection comprising the absorbates.
Abstract: The invention relates to a process for preparing organosilanes of the general formula I by reacting (haloorganyl)alkoxysilane of the formula II with hydrous alkali metal hydrogensulphide, sulphur and alkali metal carbonate in alcohol, wherein the molar (haloorganyl)alkoxysilane of the formula II to alkali metal hydrogensulphide ratio is between 1:0.4 and 1:0.75, and the molar alkali metal hydrogensulphide to alkali metal carbonate ratio is between 1:0.5 and 1:1.5.
Type:
Grant
Filed:
July 24, 2009
Date of Patent:
March 6, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Karsten Korth, Ingo Kiefer, Alfred Alig, Ulrich Deschler, Helmut Droege, Sefan Koenigstein, Stephanie Schwan
Abstract: An olefinically unsaturated monomer is stabilized by a retarder-containing composition which comprises a solvent and a quinone methide as a retarder.
Type:
Grant
Filed:
October 31, 2008
Date of Patent:
March 6, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Stefanie Weyler, Phillip James, Oliver Erpeldinger, Manfred Neumann, Frank Kraushaar
Abstract: The invention relates to an electrode material for a lithium ion battery which is distinguished by the fact that the electrode material comprises 5-85% by weight of nanoscale silicon particles which have a BET surface area of from 5 to 700 m2/g and a mean primary particle diameter of from 5 to 200 nm, 0-10% by weight of conductive carbon black, 5-80% by weight of graphite having a mean particle diameter of from 1 ?m to 100 ?m and 5-25% by weight of a binder, the proportions of the components summing to not more than 100% by weight, and to the use of the electrode material according to the invention for the production of lithium ion batteries, and to a lithium ion battery having a negative electrode which comprises the electrode material according to the invention.
Type:
Grant
Filed:
March 17, 2005
Date of Patent:
February 28, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Frank-Martin Petrat, Volker Hennige, Evelyn Albrecht, David Lee, Hilmi Buqa, Michael Holzapfel, Petr Novak
Abstract: A mixer having a mixing pipe (1), a rotatable mixing unit (3) having back-mixing action, and a supply of the liquid colorant (4, 5) through the wall of the mixing pipe in the area of the mixing unit allows uniform mixing of liquid colorants of differing viscosities even with fixed-cycle supply of the liquid colorants. Mixing liquid colorants using this mixer allows direct dosing of the mixed liquid colorant into a plastic processing machine in the event of volumetric dosing of the employed liquid colorants.
Type:
Grant
Filed:
October 11, 2006
Date of Patent:
February 28, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Simon Becht, Andreas Kluge, Maurice Weelen, Martin Welp
Abstract: The present invention relates to a method for decreasing or increasing the band gap shift in the production of photovoltaic devices by means of coating a substrate with a formulation containing a silicon compound, e.g., in the production of a solar cell comprising a step in which a substrate is coated with a liquid-silane formulation, the invention being characterized in that the formulation also contains at least one germanium compound. The invention further relates to the method for producing such a photovoltaic device.
Abstract: Active compound formulations for animal nutrition of amino acids, vitamins, enzymes and pigments, which are suitable for providing the active compounds in protected form for the nutrition of stock animals, in particular ruminants, and a process for the preparation of these protected active compound formulations.
Type:
Application
Filed:
November 4, 2011
Publication date:
February 23, 2012
Applicant:
EVONIK DEGUSSA GMBH
Inventors:
Hans Albrecht Hasseberg, Winfried Heimbeck, Dieter Greissinger, Wolfgang Mõese, Wolfgang Polzer, Nongyuan Shi, Martin Koerfer
Abstract: A pulverulent composition that is a powder containing at least one polymer, and at least one flame retardant that contains ammonium polyphosphate, the powder having a maximum particle size of ?150 ?m and a median particle size of from 20 to 100 ?m.
Abstract: A formulation containing: (i) at least one organoalkoxysilane and/or at least one organoalkoxysiloxane; (ii) at least one inorganic oxidic powder; and (iii), optionally, an organic or inorganic acid is provided. The formulation contains from 5 to 50% of the inorganic oxide powder and has a viscosity of less than 1500 mPa·s. A weight ratio of the organoalkoxysilane and/or at least one organoalkoxysiloxane to the inorganic oxidic powder is from 19:1 to 1:1.
Type:
Grant
Filed:
May 14, 2004
Date of Patent:
February 21, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Roland Edelmann, Björn Borup, Christian Wassmer, Jaroslaw Monkiewicz
Abstract: An isolated polynucleotide encodes a polypeptide comprising the amino acid sequence of SEQ ID NO: 2, with the L-aspartic acid at position 5 of the amino acid sequence replaced by another proteinogenic amino acid, and possesses citrate synthase activity. In addition, a vector comprises the polynucleotide and a bacterium comprises the vector. An isolated polynucleotide comprises a nucleotide sequence comprising, from position 1 to 39, the nucleotide sequence corresponding to position 1 to 39 of SEQ ID NO: 11, from position 40 to 105, a nucleotide sequence encoding the amino acid sequence of SEQ ID NO: 12, with each proteinogenic amino acid except L-aspartic acid being present at position 5. A method of producing an L-amino acids is also described.
Abstract: The invention relates to a composition and to a method for the production thereof, comprising quaternary amino-functional organosilicon compounds, in particular in the form of oligomers and polymers, which can be present ranging from partially hydrolyzed form to completely hydrolyzed form, and which are in particular soluble in water, have a low VOC content, and to the use thereof.
Type:
Application
Filed:
March 19, 2010
Publication date:
February 16, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Burkhard Standke, Christian Wassmer, Tim Voegtlin, Irene Lippert, Stefan Scharfe, Heinz Lach, Christoph Batz-Sohn, Steffen Hasenzahl
Abstract: A molding, produced by a layer-by-layer process in which regions of respective polymer pulverulent layers are selectively melted via introduction of electromagnetic energy, where the process employs a powder which comprises at least one homopolyamide prepared via polycondensation of diamines and dicarboxylic acids, wherein the homopolyamide has an enthalpy of fusion of at least 125 J/g and a recrystallization temperature of at least 148° C.