Patents Assigned to Degussa AG
  • Organosilicon compounds
    Patent number: 6849754
    Abstract: Organosilicon compounds of the general formula I and/or II are produced by reacting silanes of the general formula III with alcohols of the general formula R?—OH, with elimination of R—OH, wherein R—OH may be continuously separated from the reaction mixture by distillation. The organosilicon compounds may be used in rubber mixtures. Compounds, such as rubbers, produced using such organosilicon compounds.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: February 1, 2005
    Assignee: Degussa AG
    Inventors: Ulrich Deschler, Roland Krafczyk, Hans-Detlef Luginsland, Karsten Korth, Ingo Kiefer, Michael Horn
  • Bifunctional polyaddition compounds as crosslinkers for polyurethane powder coatings
    Patent number: 6849705
    Abstract: A polyaddition compound having uretdione and carboxyl groups, and having a melting range of between 40 and 200° C., a free NCO group content of from 0 to 5% by weight and an NCO functionality of at least 1.5, and a number-average molar mass of between 1000 and 10,000, may be prepared by reacting at least one polyisocyanate containing uretdione groups, at least one hydroxycarboxylic or mercaptocarboxylic acid, and one or more of at least one monofunctional compound having a functional group which is reactive toward an isocyanate, at least one aliphatic and/or cycloaliphatic polyol, at least one polyol having functional groups, and at least one aliphatic and/or cycloaliphatic polyamine. Polyurethane plastics, especially polyurethane powder coating materials may be prepared from the polyaddition compound of the present invention.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: February 1, 2005
    Assignee: Degussa AG
    Inventor: Andreas Wenning
  • Silicone rubber formulations with hydrophobic silicas
    Patent number: 6846865
    Abstract: The invention relates to silicone rubber formulations comprising organopolysiloxanes and hydrophobicized silicas, which possess an extremely high level of whiteness.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 25, 2005
    Assignee: Degussa AG
    Inventors: Christian Panz, Ralf Schmoll, Uwe Schachtely, Michael Kempf, Mario Scholz
  • Apparatus and process for batchwise polycondensation
    Publication number: 20050014922
    Abstract: The invention relates to an apparatus and to a process for batchwise preparation of polycondensation polymers having an intrinsic viscosity of from 50 to 150 cm3/g at the particular polycondensation temperature.
    Type: Application
    Filed: July 15, 2004
    Publication date: January 20, 2005
    Applicant: Degussa AG
    Inventors: Bernd Muller, Tim Popken, Rolf Hirsch, Edgar Trost, Georg Becker, Martin Bartmann, Hans-Dieter Zagefka
  • Solvent-containing coating compositions
    Publication number: 20050014012
    Abstract: A solvent-containing coating composition contains at least one hydroxyl-containing saturated copolyester, a phenol-formaldehyde resin, a benzoguanamine-formaldehyde resin and/or a blocked polyisocyanate, a catalyst and at least one solvent, and can further contain aids and additives.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 20, 2005
    Applicant: DEGUSSA AG
    Inventors: Uwe Stapperfenne, Giselher Franzmann, Doris Faber
  • Molding composition based on polyetheramides
    Publication number: 20050014842
    Abstract: A composition suitable for molding is provided having the following components: I. from 97 to 80 parts by weight of a polyetheramide, having units based on one or more linear aliphatic diamines having from 6 to 14 carbon atoms, one or more linear aliphatic or aromatic dicarboxylic acids having from 6 to 14 carbon atoms, and one or more polyetherdiamines having at least 3 carbon atoms per ether oxygen and having primary amino groups at the chain ends, II. from 3 to 20 parts by weight of a rubber containing one or more functional groups; and where the total of the parts by weight of I and II is 100; and moldings produced therefrom.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 20, 2005
    Applicant: DEGUSSA AG
    Inventors: Franz-Erich Baumann, Wilfried Bartz, Martin Himmelmann, Olivier Farges
  • Water-soluble, chlorhexidine-containing compositions and use thereof
    Patent number: 6844306
    Abstract: The invention relates to water-soluble, chlorhexidine-containing compositions having a long shelf life. The compositions are in the form of powder, granules or tablets and consist substantially of (i) a salt of chlorhexidine with 2 moles of a sugar acid and a microbicidally active quaternary ammonium bromide, or of (ii) chlorhexidine, a sugar acid or sugar lactone, with at least 2 moles of sugar acid or sugar lactone being present per mole of chlorhexidine, and a microbicidally active quaternary ammonium bromide. Peferred compositions consist substantially of chlorhexidine digluconate and N-cetyl-N,N,N-trimethylammonium bromide (cetrimide) in a weight ratio of 1:1 to 1:10. The solid compositions are stable, with little or no p-chloroaniline splitting off during storage.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: January 18, 2005
    Assignee: Degussa AG
    Inventors: Peter Werle, Friedhelm Merz, Jolanta Habrich
  • Alleles of the lysC gene from corynebacteria
    Patent number: 6844176
    Abstract: Alleles of the lysC gene from corynebacteria that code for desensitized aspartokinases, and to processes for the preparation of L-lysine using bacteria containing these alleles.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: January 18, 2005
    Assignee: Degussa AG
    Inventors: Brigitte Bathe, Stephan Hans
  • Resins based on ketones and aldehydes, having improved solubility properties and low color numbers
    Publication number: 20050010016
    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: Application
    Filed: June 9, 2004
    Publication date: January 13, 2005
    Applicant: DEGUSSA AG
    Inventors: Patrick Glockner, Bettina Burian, Peter Denkinger, Lutz Mindach, Franz-Josef Wesselbaum
  • Nucleotide sequences encoding the ptsH gene
    Publication number: 20050009143
    Abstract: The invention relates to an isolated polynucleotide containing a polynucleotide sequence selected from the group comprising a) polynucleotide which is at least 70% identical to a polynucleotide which codes for a polypeptide containing the amino acid sequence of SEQ ID no. 2, b) polynucleotide which codes for a polypeptide containing an amino acid sequence which is at least 70% identical 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 containing at least 15 successive nucleotides of the polynucleotide sequence of a), b) or c), and a process for the fermentative production of L-amino acids with enhancement of the ptsH gene coding for component H of the phosphotransferase system, and the use of the above polynucleotides as primer or hybridisation probe.
    Type: Application
    Filed: August 12, 2004
    Publication date: January 13, 2005
    Applicant: Degussa AG
    Inventors: Mike Farwick, Bettina Mockel, Walter Pfefferle
  • Radiation-curable powder coating compositions and their use
    Publication number: 20050009945
    Abstract: A radiation-curable powder coating composition, contains: I. a binder containing at least one compound crosslinkable by actinic radiation; and II. at least one compound containing polyhedral oligomeric silicon-oxygen cluster units, represented by the formula [(RaXbSiO1.5)m(RcXdSiO)n(ReXfSi2O2.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 13, 2005
    Applicant: Degussa AG,
    Inventors: Andreas Wenning, Friedrich Schmidt, Adolf Kuehnle, Carsten Jost, Marielle Wouters, Henk van Bracht
  • NCO compounds with covalently bonded polyhedral oligomeric silicon-oxygen cluster units
    Publication number: 20050010011
    Abstract: NCO compounds with covalently bonded polyhedral oligomeric silicon-oxygen cluster units and good solubility are suitable as crosslinkers in coating systems. The NCO compounds lead to improved coating properties, such as good leveling of cured baking varnishes.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 13, 2005
    Applicant: DEGUSSA AG
    Inventors: Emmanouil Spyrou, Friedrich-Georg Schmidt, Adolf Kuhnle, Carsten Jost
  • n-Propylethoxysiloxanes, their preparation and use
    Patent number: 6841197
    Abstract: An oligomer mixture of n-propylethoxysiloxanes, containing from 80 to 100% by weight of n-propylethoxysiloxanes having a degree of oligomerization ranging from 2 to 6.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: January 11, 2005
    Assignee: Degussa AG
    Inventors: Burkhard Standke, Helmut Mack
  • Method for the production of a titanium-containing zeolite
    Patent number: 6841144
    Abstract: The present invention concerns a method for the production of a titanium-containing zeolite whereby a synthesis gel is formed by combining and hydrolysing a hydrolysable silicon compound, a hydrolysable titanium compound and a basic quaternary ammonium compound in an aqueous medium, in quantities such that relative to the starting compounds the molar ratio of Si/Ti is greater than or equal to 30 and that of N/Si is 0.12 to less than 0.20, and the synthesis gel is then crystallised at a temperature of 150 ° C. to 220 ° C. for a period of less than 3 days, and a titanium-containing zeolite obtainable by this method.
    Type: Grant
    Filed: February 24, 2001
    Date of Patent: January 11, 2005
    Assignee: Degussa AG
    Inventors: Steffon Hasenzahl, Klaus Heyne, Dieter Kneitel
  • Coatings for inkjet media
    Patent number: 6840992
    Abstract: The present invention provides a coating for inkjet media, which includes at least one hydrophobic filler particle; and a binder. Another embodiment of the invention provides an inkjet media, which includes the above-described coating coated on a substrate. Another embodiment of the invention provides a method of inkjet printing, which includes inkjet printing at least one inkjet ink onto a substrate coated with the above-described coating.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: January 11, 2005
    Assignee: Degussa AG
    Inventors: Holger Glaum, Astrid Mueller
  • Method for producing 4-methyl pyrimidine
    Patent number: 6841672
    Abstract: A process is described for preparing 4-methylpyrimidine by reacting a 4,4-dialkoxy-2-butanone with a formamidine salt, optionally in the presence of a solvent or diluent, at temperatures of from 80 to 180° C. In this way, 4-methylpyrimidine can be obtained in a substantially simpler manner and at the same time in higher yields than are possible by means of existing processes.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: January 11, 2005
    Assignee: Degussa AG
    Inventors: Thomas Güthner, Bernhard Graml
  • Nucleotide sequences which code for the lysR3 gene
    Publication number: 20050003423
    Abstract: The present invention relates to polynucleotides corresponding to the lysR3 gene and which encode a LysR3 transcriptional regulator, methods of producing L-amino acids, and methods of screening for polynucleotides which encode proteins having LysR3 transcriptional regulator activity.
    Type: Application
    Filed: July 6, 2004
    Publication date: January 6, 2005
    Applicant: DEGUSSA AG
    Inventors: Bettina Moeckel, Caroline Kreutzer
  • Organosilicon compounds
    Publication number: 20050004386
    Abstract: Organosilicon compounds of the general formula I and/or II are produced by reacting silanes of the general formula III with alcohols of the general formula R?—OH, with elimination of R—OH, wherein R—OH may be continuously separated from the reaction mixture by distillation. The organosilicon compounds may be used in rubber mixtures. Compounds, such as rubbers, produced using such organosilicon compounds.
    Type: Application
    Filed: July 30, 2004
    Publication date: January 6, 2005
    Applicant: DEGUSSA AG
    Inventors: Ulrich Deschler, Roland Krafczyk, Hans-Detlef Luginsland, Karsten Korth, Ingo Kiefer, Michael Horn
  • Solid polyurethane powder coating compositions containing uretdione groups that are hardenable at low temperatures
    Publication number: 20050003206
    Abstract: A highly reactive polyurethane powder coating composition, which contains uretdione groups that are hardenable at low temperatures, contains A) at least one uretdione-containing powder coating hardener based on aliphatic, (cyclo)aliphatic or cycloaliphatic polyisocyanates and hydroxyl-containing compounds, the hardener having a melting point of from 40 to 130° C., a free NCO content of less than 5% by weight, and a uretdione content of 6-18% by weight; B) at least one hydroxyl-containing polymer having a melting point of from 40 to 130° C., and an OH number of between 20 and 200 mg KOH/g; C) 0.001-3% by weight of at least one tetraalkyl ammonium carboxylate catalyst, based on a total amount of components A) and B). Components A) and B) are present in a ratio so that for each hydroxyl group of component B) there is from 0.3 to 1 uretdione group of component A).
    Type: Application
    Filed: May 3, 2004
    Publication date: January 6, 2005
    Applicant: DEGUSSA AG
    Inventors: Emmanouil Spyrou, Holger Loesch, Andreas Wenning
  • Nucleotide sequences coding for the ccpA1 gene
    Patent number: 6838267
    Abstract: The present invention provides isolated polynucleotides containing a polynucleotide sequence which is: 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, or 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, or c) polynucleotide which is complementary to the polynucleotides of a) or b), or 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 ccpA1 gene is present in attenuated form, and the use of the polynucleotide sequences as hybridization probes.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: January 4, 2005
    Assignee: Degussa AG
    Inventors: Bettina Moeckel, Caroline Kreutzer