Abstract: The present invention relates to polyurethane compositions containing uretdione groups that can be cured at a low temperature and are intended more particularly for polyurethane powder coating compositions and adhesive compositions, to a process for preparing them and to their use.
Abstract: The invention relates to a method for the treatment of a composition containing inorganic silanes and at least one foreign metal and/or a compound containing a foreign metal, wherein the composition is brought in contact with at least one adsorption agent, and for obtaining the composition, in which the content of foreign metal and/or of a compound containing a foreign metal is reduced, and to a corresponding composition having a reduced foreign metal content, and further to the use of organic resins, activated carbons, silicates, and/or zeolites for the reduction of foreign metals and/or compounds containing foreign metals in compositions of inorganic silanes.
Abstract: An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated crystalline silicon may be doped with a doping component and can be used to produce electronic components.
Type:
Application
Filed:
July 2, 2010
Publication date:
October 21, 2010
Applicant:
EVONIK DEGUSSA GMBH
Inventors:
Markus Pridöhl, Paul Roth, Hartmut Wiggers, Frank-Martin Petrat, Michael Krämer
Abstract: A method for preparing a substituted 1,4-quinone methide from a 3,5-disubstituted 4-hydroxybenzaldehyde is provided. Also provided is a method to prepare a 3,5-disubstituted 4-hydroxybenzaldehyde from the corresponding 2,6-disubstituted phenol.
Type:
Application
Filed:
April 20, 2010
Publication date:
October 21, 2010
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Stefanie RINKER, Phillip R. James, Manfred Neumann, Oliver Erpeldinger, Frank Kraushaar
Abstract: The use of granular materials based on pyrogenically produced silicon dioxide in pharmaceutical compositions, the pharmaceutical compositions per se, as well as an adsorbate consisting of the granular material and at least one further substance selected from pharmaceutical active constituents and auxiliary substances, and the production of such adsorbates, are described.
Type:
Grant
Filed:
October 28, 2002
Date of Patent:
October 19, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Steffen Hasenzahl, Jürgen Meyer, Jürgen Heym
Abstract: A surface-modified precipitated silica, useful as a matting agent, contains the silica having a polymer on a surface thereof. The surface-modified precipitated silica improves the transmission of a clear coating material, having a refractive index of nD20=1.4492 and containing 5% by weight of said silica, by at least 20%, in comparison to the same clear coating material containing 5% by weight of a reference precipitated silica surface treated with a polyethylene wax.
Abstract: L-lysine-producing strains of corynebacteria with enhanced lysE gene (lysine export carrier gene), in which strains additional genes chosen from the group comprising the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the dapB gene (dihydrodipicolinate reductase gene) and the pyc gene, but especially the dapA gene and the lysC gene (aspartate kinase gene), are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.
Type:
Application
Filed:
October 10, 2008
Publication date:
October 14, 2010
Applicant:
Evonik Degussa GmbH
Inventors:
Caroline Kreutzer, Stephan Hans, Mechthild Rieping, Bettina Mockel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm, Miroslav Patek
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 describes a process for preparing acetone starting from acetyl-coenzyme A comprising process steps A. enzymatic conversion of acetyl-CoA into acetoacetyl-CoA B. enzymatic conversion of acetoacetyl-CoA into acetoacetate and CoA and C. decarboxylation of acetoacetate to acetone and CO2, which is characterized in that the coenzyme A is not transferred in process step B to an acceptor molecule. In addition, process step B is surprisingly catalysed by enzymes of the classes of acyl-CoA thioesterase, acyl-CoA synthetase or acyl-CoA thiokinase. A completely novel metabolic pathway is concerned, because the enzymatic hydrolysis of acetoacetyl-CoA without simultaneous transfer of CoA to a receptor molecule has never previously been described for any microbial enzyme.
Type:
Application
Filed:
October 1, 2008
Publication date:
October 14, 2010
Applicant:
EVONIK DEGUSSA Gmbh
Inventors:
Stefan Verseck, Steffen Schaffer, Werner Freitag, Friedrich-Georg Schmidt, Matthias Orschel, Gerda Grund, Wilfried Schmidt, Hubert Johannes Bahl, Ralf-Joerg Fischer, Antje May, Peter Duerre, Simone Lederle
Abstract: Flakes comprising pyrogenically prepared silicon dioxide were rendered water repellent after compacting. They can be used in natural rubber and synthetic rubber production.
Abstract: A resin is based on ketones and aldehydes and is prepared in methanol or ethanol in the presence of a phase transfer catalyst. The resin features a very broad solubility and low intrinsic color.
Type:
Grant
Filed:
December 23, 2008
Date of Patent:
October 12, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Patrick Gloeckner, Bettina Burian, Peter Denkinger, Lutz Mindach, Franz-Josef Wesselbaum
Abstract: The separator-electrode units comprise a porous electrode which is useful as a positive electrode (cathode) or negative electrode (anode) in a lithium battery and a separator layer applied to this electrode and are characterized in that the separator-electrode units comprise a purely inorganic separator layer which comprises at least two fractions of metal oxide particles which differ from each other in their average particle size and/or in the metal. More particularly, the separator layer comprises metal oxide particles having an average particle size (Dg) which is greater than the average pore size (d) of the pores of the porous positive electrode that are bonded together by metal oxide particles having a particle size (Dk) which is smaller than the pores of the porous electrode.
Type:
Grant
Filed:
July 4, 2003
Date of Patent:
October 12, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Volker Hennige, Christian Hying, Gerhard Hoerpel, Sven Augustin
Abstract: The invention relates to coryneform bacteria which, instead of the singular copy of an open reading frame (ORF), gene or allele naturally present at the particular desired site (locus), have at least two copies of the open reading frame (ORF), gene or allele in question, preferably in tandem arrangement, and optionally at least a third copy of the open reading frame (ORF), gene or allele in question at a further gene site, and processes for the preparation of chemical compounds by fermentation of these bacteria.
Type:
Application
Filed:
September 3, 2009
Publication date:
October 7, 2010
Applicant:
Evonik Degussa GmbH
Inventors:
Brigitte Bathe, Caroline Kreutzer, Bettina Mockel, Georg Thierbach
Abstract: Hydrophobic flakes comprising pyrogenically prepared silicon dioxide prepared by optionally mixing pyrogenically prepared silicon dioxide with water or another reaction auxiliary and a water repellent, compacting and, optionally after ripening, annealing. The hydrophobic flakes thus produced can be used as a filler in natural rubber and synthetic rubber.
Type:
Application
Filed:
November 18, 2008
Publication date:
October 7, 2010
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Florian Felix Kneisel, Andreas Garbatscheck
Abstract: A polyolefin which contains the following monomer units: a) not more than 25% by weight of units which are derived from ethene, b) not more than 75% by weight of units which are derived from propene and c) from 5 to 100% by weight of units which are derived from an ?-olefin having 4 to 20 carbon atoms, the polyolefin having the following parameters: d) a weight-average molecular weight in the range of from 70 000 to 10 000 000 g/mol, e) a polydispersity in the range of from 4 to 60, f) a melt viscosity, measured by oscillation rheometry at a shear rate of 1 Hz at 190° C., in the range of from 100 000 to 100 000 000 mPa·s, g) a needle penetration in the range of from 3 to 70·0.1 mm, h) an enthalpy of fusion in the range of from 2 to 100 J/g, i) a glass transition temperature Tg in the range of from ?15° C. to ?80° C. and j) a final melting point of the crystalline fraction in the range of from 85 to 175° C.
Type:
Grant
Filed:
March 13, 2006
Date of Patent:
October 5, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Hinnerk Gordan Becker, Hans Guenther Wey, Wolfgang Kilian, Thomas Stojetzki, Marion Vornholt, Marlies Vey, Juergen Derks, Hans-Dieter Zagefka
Abstract: This object is achieved by an electrical separator according to the invention, comprising a sheetlike flexible substrate having a multiplicity of openings and having a coating on and in said substrate, said substrate being a polymeric nonwoven and said coating being a porous electrically insulating ceramic coating, said separator being characterized by said nonwoven having a thickness of less than 30 ?m, a porosity of more than 50% and a pore radius distribution in which at least 50% of the pores have a pore radius from 75 to 150 ?m.
Type:
Grant
Filed:
July 4, 2003
Date of Patent:
October 5, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Volker Hennige, Christian Hying, Gerhard Hoerpel
Abstract: The present invention provides a method for purifying laurolactam from a crude lactam mixture. In the method of the present invention, laurolactam is selectively crystallized by melt crystallization with controlled cooling of the crude lactam mixture.
Type:
Grant
Filed:
October 2, 2008
Date of Patent:
October 5, 2010
Assignee:
Evonik Degussa GmbH
Inventors:
Axel Hengstermann, Ralf Meier, Bernd Günzel, Martin Roos, Stephan Schäflein, Bernd-Holger Modrow
Abstract: The invention relates to a method for producing carbon black or other flame aerosols, comprising the following steps: the heat is removed from the flame by dissipation and/or radiation; a thin gas boundary layer is formed; the flow formed by the flame and the gas boundary layer is accelerated or expanded; the obtained aerosol is withdrawn; and the cooling surface is cleaned. The invention further relates to a device for carrying out such a method and a black carbon having a maximum pH value of 6.0, a maximum ignition residue of 0.1 percent, and a maximum 5 ?m screening refuse of 200 ppm. The inventive black carbon can be used in rubber, plastic, printing inks, inks, inkjet inks, toners, lacquers, dyes, paper, bitumen, concrete, and other construction materials.
Type:
Application
Filed:
June 10, 2010
Publication date:
September 30, 2010
Applicant:
Evonik Degussa GmbH
Inventors:
Ulrich RIEBEL, Matthias Katzer, Kai Krauss, Alfons Karl, Jürgen Behnisch
Abstract: The invention relates to feed additives containing dipeptides or salts thereof, in which one amino acid residue of the dipeptide is a DL-methionyl residue and the other amino acid residue of the dipeptide is an amino acid in the L-configuration selected from lysine, threonine, tryptophan, histidine, valine, leucine, isoleucine, phenylalanine, arginine, cysteine and cystine; feed mixtures containing these additives and method of producing the dipeptides.
Type:
Application
Filed:
March 30, 2010
Publication date:
September 30, 2010
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Christoph KOBLER, Thomas HAEUSSNER, Katja KELM, Christoph WECKBECKER