Patents Assigned to Clariant GmbH
  • PROCESS FOR PREPARING 4-SUBSTITUTED 2-ALKYLBIPHENYLS AND 2-ALKOXYLBIPHENYLS
    Publication number: 20020115880
    Abstract: A process for preparing 4-substituted 2-alkylbiphenyls and 2-alkoxybiphenyls of the formula (I), 1
    Type: Application
    Filed: February 11, 2002
    Publication date: August 22, 2002
    Applicant: Clariant GmbH
    Inventors: Andreas Meudt, Stefan Scherer, Frank Vollmuller, Heinz Georg Kautz
  • Water-soluble or water-swellable crosslinked copolymers
    Patent number: 6437068
    Abstract: Water-soluble or water-swellable crosslinked copolymers consisting essentially of structural units of the formula 1 or a mixture of the structural units of the formula 1 with structural units of the formula 2 and structural units of the formula 3 where R, R1, R2, R3, Z and n are as defined in the description. These copolymers are crosslinked with compounds which contain at least two olefinic double bonds. These crosslinked copolymers are suitable as thickeners, in particular for cosmetic and pharmaceutical preparations.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: August 20, 2002
    Assignee: Clariant GmbH
    Inventors: Matthias Löffler, Roman Morschhäuser
  • Preparation of disazo condensation pigments in microreactors
    Patent number: 6437104
    Abstract: A process for preparing disazo condensation pigments by diazotization of an aromatic amine, azo coupling with a coupling component to form an azocarboxylic acid or azodicarboxylic acid, formation of an azocarbonyl chloride or azodicarbonyl dichloride and condensation of the azocarbonyl chloride with an aromatic diamine or of the azodicarbonyl dichloride with an aromatic amine comprises effecting the acyl chloride formation and/or the condensation and optionally the diazotization and optionally the azo coupling in a microreactor.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: August 20, 2002
    Assignee: Clariant GmbH
    Inventors: Uwe Nickel, Klaus Kund, Frank Alfter
  • Process for producing highly concentrated pigment presscakes
    Patent number: 6436182
    Abstract: The invention relates to an advantageous process for producing highly concentrated pigment presscakes which comprises concentrating a pigment suspension on a high-pressure filter press with a pressure of at least 16 bar to a pigment content of at least 50% by weight without adding nonionic surfactants which have a cloud point in water.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: August 20, 2002
    Assignee: Clariant GmbH
    Inventors: Leonhard Unverdorben, Uwe Nickel, Andreas Harz, Gunnar Tilch
  • Laundry detergents and cleaners comprising microdisperse silicate-containing particles
    Publication number: 20020111287
    Abstract: The invention relates to laundry detergents and cleaners comprising microdisperse, hydrophilic silicate-containing particles. The particle diameter of the particles is preferably 1 to 500 nm. The addition of the silicate-containing particles leads to improved soil release with a simultaneous reduction in the tendency for resoiling.
    Type: Application
    Filed: December 12, 2001
    Publication date: August 15, 2002
    Applicant: Clariant GmbH
    Inventors: Harald Bauer, Gunther Schimmel
  • Red acid dyes for injet printing and paper dyeing
    Patent number: 6432185
    Abstract: The present invention provides water-soluble acid dyes of the formula (1) in which R1 is A—X—COOM, A—X—SO3M, OR4 or NR5R6, A is NR7 or S, X is a (C1-C16)-alkylene or arylene radical optionally substituted with hydroxyl-, carboxyl- or amino-groups; R4, R5 and R6 independently of one another are hydrogen or (C1-C4)-alkyl or substituted (C1-C4)-alkyl R7 is hydrogen, methyl or ethyl; M is a cation and n is 0 or 1. which are suitable for printing natural and synthetic fiber materials for recording liquids, especially for the inkjet process, and for pulp-dyeing paper.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: August 13, 2002
    Assignee: Clariant GmbH
    Inventors: Wolfgang Bauer, Josef Geisenberger, Heidemarie Menzel, Reinhard Pedrazzi
  • Particulate bleach activators based on acetonitriles
    Publication number: 20020107163
    Abstract: Particulate bleach activators comprising 15 to 60% by weight of an acetonitrile, 20 to 70% by weight of a silicon-containing carrier material and 20 to 30% by weight of water, which are obtained by applying an aqueous solution, saturated at 10 to 40° C., of an acetonitrile onto the carrier material without subsequent drying, where the amount of saturated aqueous solution is measured such that the given limits for acetonitrile, carrier material and water are observed.
    Type: Application
    Filed: November 16, 2001
    Publication date: August 8, 2002
    Applicant: Clariant GmbH
    Inventors: Georg Borchers, Robert Milbradt, Oliver Mogck, Frank Weinelt
  • Aqueous polymer dispersion, its preparation and use
    Publication number: 20020103290
    Abstract: The present invention relates to aqueous dispersions preparable by polymerization of an olefinically unsaturated, water-insoluble compound in the presence of a water-soluble allyl or vinyl ether of the formula 1 1
    Type: Application
    Filed: March 22, 2002
    Publication date: August 1, 2002
    Applicant: Clariant GmbH
    Inventors: Klaus Pollmann, Hendrik Ahrens, Achim Stankowiak
  • Continuous process for the preparation of pentafluoroethyl iodide
    Patent number: 6426439
    Abstract: Continuous process for the preparation of pentafluoroethyl iodide from iodine, iodine pentafluoride and tetrafluoroethylene, which comprises dissolving the iodine in iodine pentafluoride and continuously feeding the resulting solution to a vertical bubble column (1), which is filled with iodine pentafluoride and at its lower end has a feed line for tetrafluoroethylene, where the reaction zone is maintained at from 85 to 95° C., preferably 90° C., and the pentafluoroethyl iodide formed escapes in gaseous form at the top of the reactor (1), is liquefied in a downstream cooled condenser and is drawn off into storage vessels.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 30, 2002
    Assignee: Clariant GmbH
    Inventors: Hans-Bodo Richter, Norbert Paul, Rudolf Huber
  • Hair-treatment compositions comprising oligoesters
    Patent number: 6426063
    Abstract: Hair-treatment compositions which comprise oligoesters prepared by condensation of an aromatic dicarboxylic acid, ethylene glycol and/or propylene glycol and polyethylene glycol and optionally alkylpolyethylene glycol are claimed.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 30, 2002
    Assignee: Clariant GmbH
    Inventor: Wilfried Schuler
  • Fatty acid mixtures of improved low-temperature stability which comprise comb polymers, and their use in fuel oils
    Publication number: 20020099228
    Abstract: The invention relates to low-temperature-stabilized fatty acid mixtures comprising A) from 10 to 99.99% by weight of fatty acid mixtures comprising A1) from 1 to 99% by weight of at least one saturated mono- or dicarboxylic acid having 6 to 50 carbon atoms, A2) from 1 to 99% by weight of at least one unsaturated mono- or dicarboxylic acid having 6 to 50 carbon atoms, and B) from 0.
    Type: Application
    Filed: November 16, 2001
    Publication date: July 25, 2002
    Applicant: Clariant GmbH
    Inventors: Matthias Krull, Werner Reimann
  • Fuel oils having improved lubricity comprising mixtures of fatty acids with paraffin dispersants, and a lubrication-improving additive
    Publication number: 20020095857
    Abstract: The invention relates to low-temperature-stabilized additives for fuel oils having a sulfur content of up 0.
    Type: Application
    Filed: November 16, 2001
    Publication date: July 25, 2002
    Applicant: Clariant GmbH
    Inventors: Matthias Krull, Werner Reimann
  • Use of coated pigment granules in electrophotographic toners and developers, powder coatings and inkjet inks
    Publication number: 20020098435
    Abstract: The present invention relates to the use of wax-coated pigment granules as colorants in electrophotographic toners and developers, powder coating materials, inkjet inks, electret fibers, and color filters, wherein the coated pigment granules have a particle size of between 0.05 and 5 mm and a wax content of from 1 to 50% by weight, based on the overall weight of the coated pigment granules.
    Type: Application
    Filed: November 1, 2001
    Publication date: July 25, 2002
    Applicant: Clariant GmbH
    Inventors: Ulrike Rohr, Ruediger Baur, Hans-Joachim Metz, Andreas Stohr
  • Process for preparing highly pure formylphenylboronic acids
    Patent number: 6420597
    Abstract: A process for purifying formylphenylboronic acids of the formula (I) where the formyl function is located in the ortho, meta or para position relative to the boronic acid function, by dissolving the crude formylphenylboronic acids in an alkaline solvent having a pH in the range from 8 to 11 separating off the insoluble organic impurities and subsequently acidifying the alkaline boronic acid solution and separating off and working up the precipitated boronic acid. The crude formylphenylboronic acid is preferably dissolved in aqueous alkali metal or alkaline earth metal oxide, hydroxide, carbonate or phosphate solutions at temperatures in the range from 5 to 50° C. The formylphenylboronic acids obtained have a purity of ≧99% and are suitable as precursors for liquid-crystalline compounds, as liquid crystals or as constituents of liquid-crystalline mixtures or as pharmaceutical intermediates.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: July 16, 2002
    Assignee: Clariant GmbH
    Inventors: Frank Vollmüller, Andreas Meudt, Stefan Scherer
  • Process for preparing alkylphosphonic acids
    Patent number: 6420598
    Abstract: The present invention relates to a process for the preparation of alkylphosphonic acids, which comprises reacting phosphorous acid (H3PO3) with short-chain olefins, and to the use of the products prepared by this process.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: July 16, 2002
    Assignee: Clariant GmbH
    Inventors: Norbert Weferling, Martin Sicken, Hans-Peter Schmitz
  • Compounds based on polyalkyl-1-oxadiazaspirodecane compounds
    Patent number: 6420461
    Abstract: The present invention relates to novel compounds of the formula (III) in which the substituents are as defined in the description, to a process for their preparation and to mixtures with other compounds. The compounds of the formula (III) are suitable for stabilizing organic material against the effect of light and heat.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: July 16, 2002
    Assignee: Clariant GmbH
    Inventors: Thomas Stährfeldt, Mathias Mehrer, Matthias Zäh, Gerhard Pfahler
  • Flame-retarding thermosetting compositions
    Patent number: 6420459
    Abstract: The invention relates to flame-retardant thermoset compositions which comprise, as flame retardant, at least one phosphinic and/or a diphosphinic salt of these.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: July 16, 2002
    Assignee: Clariant GmbH
    Inventor: Sebastian Hörold
  • Mixed crystals of benzimidazolonedioxazine compounds
    Publication number: 20020091258
    Abstract: A mixed crystal of two or more different benzimidazolonedioxazine compounds of the formula (1) 1
    Type: Application
    Filed: October 24, 2001
    Publication date: July 11, 2002
    Applicant: Clariant GmbH
    Inventors: Martin U. Schmidt, Peter Kempter, Carsten Plueg, Roland Born
  • Process for bleaching paper using bleaching-active dendrimer ligands
    Publication number: 20020091071
    Abstract: Laundry detergents and cleaners which, in addition to a peroxide compound, comprise a compound of the formula
    Type: Application
    Filed: January 17, 2002
    Publication date: July 11, 2002
    Applicant: Clariant GmbH
    Inventors: Claudia Fischer, Nicole Reichardt, Jorg Issberner
  • Pigment preparations comprising two or more perylene compounds
    Patent number: 6413309
    Abstract: Pigment preparations comprising a) at least one organic base pigment, b1) at least one perylene pigment dispersant of the formula (I)  and b2) at least one acidic, carboxyl- or sulfo-containing perylene pigment dispersant have advantageous rheological and coloristic properties.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: July 2, 2002
    Assignee: Clariant GmbH
    Inventors: Joachim Weber, Manfred Urban, Manfred Opravil, Erwin Dietz