Abstract: Light-stable and weather-stable coating films contain a powder coating composition, containing from 30 to 98.5% by mass of a binder containing at least one urethane (meth)acrylate having a melting point of from 40 to 130° C.; from 1 to 20% by mass of at least one micronized wax; and from 0.5 to 50% by mass of at least one auxiliary and/or at least one additive, the composition being cross-linked by actinic radiation.
Abstract: Catalysts and processes for preparing polyisocyanates containing isocyanurate groups, and their use, wherein the catalysts are represented by the following formula (1): [Hl?Xm?Fn?]p·[R(4?q)Si(NR1R2)q]r??(I), wherein n=m+l with 1?m/n>0, and l?0, p>0 and r>0, and the ratio p/r is any value, q=1 or 2, and R, R1, R2 and X are as defined.
Type:
Grant
Filed:
November 27, 2002
Date of Patent:
April 5, 2005
Assignee:
Degussa AG
Inventors:
Michael Ewald, Manuela Windmueller, Waltraud Poersch, Stephan Kohlstruk
Abstract: The present invention relates to polynucleotides corresponding to the luxR gene and which encode a LuxR transcriptional activator, methods of producing L-amino acids, and methods of screening for polynucleotides which encode proteins having LuxR transcriptional activation activity. The invention also relates to isolating the luxR gene and which encode a LuxR transcriptional activator from Corynebacterium glutamicum.
Abstract: Nanoscale, pyrogenically produced zinc oxide having a BET surface area of 10 to 200 m2/g, which is in the form of aggregates of anisotropic primary particles and whereby the aggregates display an average diameter of 50 to 300 nm. It is obtained from zinc powder, which is converted to zinc oxide powder in the four successive reaction zones, evaporation zone, nucleation zone, oxidation zone and quench zone. It can be used in sunscreen formulations.
Abstract: Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.
Abstract: The invention relates to isolated nucleotide sequences from Coryneform bacteria which code for the pck gene encoding the enzyme phosphoenol pyruvate carboxykinase (PEP carboxykinase). The invention also relates a process for the fermentative preparation of L-amino acids, in particular L-lysine, L-threonine, and L-glutamate by attenuation of the pck gene.
Type:
Grant
Filed:
May 6, 2002
Date of Patent:
March 29, 2005
Assignee:
Degussa AG
Inventors:
Bernhard Eikmanns, Christian Riedel, Hermann Sahm, Bettina Mockel
Abstract: The present invention relates to isolated polynucleotides which encode proteins with O-acetylhomoserine sulfhydrylase, vectors and cells containing the polynucleotides as well as methods of preparing L-amino acids.
Type:
Application
Filed:
May 5, 2004
Publication date:
March 24, 2005
Applicant:
DEGUSSA AG
Inventors:
Bettina Moeckel, Walter Pfefferle, Klaus Huthmacher, Christian Rueckert, Joern Kalinowski, Alfred Puehler, Michael Binder, Dieter Greissinger, Georg Thierbach
Abstract: The invention relates to an isolated polynucleotide comprising a polynucleotide sequence chosen from the group consisting of a) polynucleotide which is identical to the extent of at least 70% to a polynucleotide which codes for a polypeptide which comprises the amino acid sequence of SEQ ID No. 2, b) polynucleotide which codes for a polypeptide which comprises an amino acid sequence which is identical to the extent of at least 70% to the amino acid sequence of SEQ ID No. 2, c) polynucleotide which is complementary to the polynucleotides of a) or b), and d) polynucleotide comprising at least 15 successive nucleotides of the polynucleotide sequence of a), b) or c), and a process for the fermentative preparation of L-amino acids using coryneform bacteria in which at least the mikE17 gene is present in attenuated form, and the use of polynucleotides which comprise the sequences according to the invention as hybridization probes.
Type:
Application
Filed:
August 24, 2004
Publication date:
March 24, 2005
Applicant:
Degussa AG
Inventors:
Mike Farwick, Klaus Huthmacher, Walter Pfefferle
Abstract: This invention relates to a process for the production of L-amino acids, in particular L-threonine, in which the following steps are performed: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid, in which at least one or more of the genes, selected from the group iclR and fadR, or nucleotide sequences coding therefor, are enhanced, in particular overexpressed, b) accumulation of the desired L-amino acid in the medium or in the cells of the bacteria and c) isolation of the desired L-amino acid.
Abstract: The present invention is directed to a new NADH oxidase from Lactobacillus, nucleic acids encoding the NADH oxidase, methods of producing the NADH oxidase, as well as there use in producing improved NADH oxidase enzymes and for producing chrial enantiomer-enriched organic compounds, such as alcohols and/or amino acids.
Abstract: The present invention relates to processes for the preparation of enantiomerically enriched ?-amino acids. The invention also relates to advantageous esters of ?-amino acids of the general formula (I) and to the use thereof in the enzymatic preparation of enantiomerically enriched ?-amino acids.
Abstract: Processes for preparing alkali metal alkoxide granules and alkaline earth metal alkoxide granules of aliphatic, saturated or unsaturated, unbranched or branched alcohols, preferably having 1 to 12, in particular 1 to 6, carbon atoms. A preferred process for preparing the alkoxides utilizes fluidized-bed spray granulation.
Type:
Grant
Filed:
October 15, 2002
Date of Patent:
March 22, 2005
Assignee:
Degussa AG
Inventors:
Joachim Luethi, Stefan Schulze, Christian Alt, Andreas Goelz, Andreas Harthun
Abstract: A composition containing (i) at least one silicon-containing compound, (ii) at least one peroxidic free-radical initiator, and (iii) at least one conjugated hydrocarbon and/or at least one organofunctional silane of the general formula I: R—Xn—C(R)?C(R)—C(R)?C(R)—Xn—Si(R1)m(OR2)(3-m)??(I), may be used in the preparation of grafted and/or crosslinked polymers, or of filled plastics, in order to improve scorch performance. Processes for preparing polymers or preparing plastics, and polymers and plastics which are obtainable via the Sioplas process or via the Monosil process, and products produced from them can utilize the composition.
Abstract: Compositions for producing foamed products which comprise a chlorinated polymer such as PVC and at least one isomeric nonyl benzoate as a plasticizer, the use of these compositions, and products produced therefrom including PVC-containing floorcoverings, synthetic leather, and wallcoverings.
Abstract: The epoxidation of cyclic, at least monounsaturated alkenes is conducted by a process, which comprises conducting the epoxidation of a cyclic, at least monounsaturated alkene in the presence of an oxidant in a reaction medium that contains at least 1% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene. In a preferred embodiment the reaction medium contains at least 2.5% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene.
Type:
Grant
Filed:
October 14, 2003
Date of Patent:
March 1, 2005
Assignee:
Degussa AG
Inventors:
Jürgen Herwig, Martin Roos, Georg Oenbrink, Bernd Günzel, Jörg Lohmar
Abstract: The invention relates to L-lysine-producing strains of corynebacteria with enhanced pyc gene (pyruvate carboxylase gene), in which strains additional genes, chosen from the group consisting of the dapA gene (dihydrodipicolinate synthase gene), the lysC gene (aspartate kinase gene), the lysE gene (lysine export carrier gene) and the dapB gene (dihydrodipicolinate reductase gene), but especially the dapA gene, are enhanced and, in particular, over-expressed, and to a process for the preparation of L-lysine.
Type:
Grant
Filed:
March 19, 2001
Date of Patent:
March 1, 2005
Assignee:
Degussa AG
Inventors:
Caroline Kreutzer, Bettina Mockel, Walter Pfefferle, Lothar Eggeling, Hermann Sahm, Miroslav Patek
Abstract: A radiation curable powder coating composition that contains a) a binder having at least one amorphous urethane acrylate having a glass transition temperature of at least 35° C. and a melting point of from 50 to 120° C.; and b) an auxiliary, can be crosslinked by radiation to produce a lightfast and weather-stable film.
Type:
Grant
Filed:
December 19, 2002
Date of Patent:
March 1, 2005
Assignee:
Degussa AG
Inventors:
Andreas Wenning, Giselher Franzmann, Emmanouil Spyrou
Abstract: A continuous catalytic hydrogenation process, in which a reaction mixture containing the substance to be hydrogenated, the hydrogenation product, hydrogen and the hydrogenation catalyst suspended in the reaction mixture is recirculated in a reactor. Part of the hydrogenation product is removed from the reactor and the substance to be hydrogenated and hydrogen are fed into the reaction. In this process the substance to be hydrogenated and the hydrogen are mixed before entering the reactor. A venturi nozzle is particularly suitable as the mixing device.
Abstract: An apparatus for filling containers, said apparatus comprising a feed nozzle which may be placed over the feed orifice of the container, the feed nozzle being so constructed that the solids may be introduced under pressure and the container being surrounded by a cage, as well as a process for filling containers, in particular with finely divided solids having a high air content by arranging an air-permeable large container in an apparatus according to the invention, air-tight connection of the large container to the feed nozzle, filling of the container under pressure, removal of the filled container and container with air-permeable plies.
Type:
Grant
Filed:
July 12, 2002
Date of Patent:
March 1, 2005
Assignee:
DeGussa AG
Inventors:
Roland Schaffer, Johannes Andreas Joze Middelman, Gerd Theodor Brand, Thomas Riedemann, Frank Dieter Hünig, Hans-Jürgen Strempel, Hans-Joachim Seydel, Michael Hirschhäuser
Abstract: The invention described herein provides ketone-aldehyde resins, especially cyclohexanone-formaldehyde resins, with low water content and high thermal stability and yellowing resistance, and to a process for preparing them and their use.
Type:
Application
Filed:
July 19, 2004
Publication date:
February 24, 2005
Applicant:
DEGUSSA AG
Inventors:
Patrick Gloeckner, Werner Andrejewski, Hans-Peter Bergmann, Iris Brueckner, Peter Denkinger, Michael Ewald, Thomas Weber