Patents Assigned to Clariant GmbH
  • Process for preparing alkylphosphonite esters
    Patent number: 6770779
    Abstract: The present invention relates to a process for the preparation of alkylphosphonous acid esters which comprises a) reacting elemental yellow phosphorus with alkylating agents in the presence of a base to give a mixture which comprises, as principal constituents, the (metal) salts of alkylphosphonous, phosphorous and hypophosphorous acids, b) esterifying the principal constituents of the mixture from a) to give an ester mixture, c) isolating the ester of the alkylphosphonous acid from the ester mixture. The invention likewise relates to the use of the alkylphosphonous acid esters prepared by this process as precursors for further syntheses, inter alia for the preparation of crop protection agents.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: August 3, 2004
    Assignee: Clariant GmbH
    Inventors: Norbert Weferling, Martin Sicken, Hans-Peter Schmitz, Günter Kolbe
  • Process for the preparation of ethylene copolymers, and their use as additives to mineral oil and mineral oil distillates
    Patent number: 6762253
    Abstract: The invention relates to a process for the preparation of terpolymers of ethylene and at least 2 further olefinically unsaturated compounds by polymerization in a tubular reactor fitted with at least one side branch, wherein the fresh monomer components, which are introduced into the tubular reactor via the reactor inlet (the primary stream) or via the side branch or side branches (secondary stream or secondary streams), in each of the streams contain ethylene and at most one further olefinically unsaturated compound.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: July 13, 2004
    Assignee: Clariant GmbH
    Inventors: Matthias Krull, Werner Reimann, Wilhelm Zoller, Heinz Dieter Bühnen, Gerhard Bettermann
  • Use of wax mixtures for coatings
    Patent number: 6761764
    Abstract: The invention provides for the use of mixtures of waxes which comprise a) a homopolymer or copolymer of C2-C18 &agr;-olefins, prepared by means of metallocene catalysis, and, as auxiliaries, one or more other waxes selected from the group consisting of b) PE waxes, c) PTFE waxes, d) PP waxes, e) amide waxes, f) FT paraffins, g) montan waxes, h) natural waxes, i) macrocrystalline and microcrystalline paraffins, j) polar polyolefin waxes, or k) sorbitan esters for improving the properties of coating materials.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: July 13, 2004
    Assignee: Clariant GmbH
    Inventors: Ernst Krendlinger, Franz-Leo Heinrichs, Dieter Nowicki
  • Method for producing (1,1?,4, 11?)-terphenyl compounds
    Patent number: 6762315
    Abstract: The invention relates to a method for producing [1,1′:4′,1″]-terphenyl compounds of the formula which comprises reacting a metal aryl of the formula with a boric ester at −80 to 40° C. in the presence of an inert solvent, converting the reaction product by hydrolysis into a boronic acid of the formula reacting the boronic acid, a boronic anhydride obtainable from boronic acid by elimination of water, or a mixture of boronic acid and boronic anhydride, with an alcohol, and reacting the boronic ester formed thereby with a biphenyl compound of the formula at 40 to 180° C. in the presence of a catalyst, of an acid-binding agent and of a polar solvent.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: July 13, 2004
    Assignee: Clariant GmbH
    Inventors: Stefan Scherer, Steffen Haber
  • Mixed crystals of benzimidazolonedioxazine compounds
    Patent number: 6762299
    Abstract: A mixed crystal of two or more different benzimidazolonedioxazine compounds of the formula (1) where X and X′ are identical or different and are hydrogen or halogen, R1, R1′, R2 and R2′ are identical or different and are hydrogen, C1-C18 alkyl, trifluoromethyl, C1-C18 alkylcarbonyl, C5-C6 cycloalkyl or phenyl which may be unsubstituted or substituted by one or more halogen atoms, nitro groups, trifluoromethyl, C1-C18 alkyl, C1-C18 alkoxy, C1-C18 alkylcarbonyl and/or C1-C18 alkoxycarbonyl groups. The mixed crystals are of low solubility and feature good fastness properties and red to blue colorations. The mixed crystals are suitable for pigmenting paints, plastics, printing inks, aqueous or solvent-based pigment preparations, electrophotographic toners and developers, powder coating materials, inks, preferably inkjet inks, color filters, and for coloring seed and cosmetics.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: July 13, 2004
    Assignee: Clariant GmbH
    Inventors: Martin U. Schmidt, Peter Kempter, Carsten Plueg, Roland Born
  • Method for the production of (1S, 4R)-(-)-4-hydroxy cyclopent-2-enyl esters
    Publication number: 20040126855
    Abstract: Process for the preparation of (1S, 4R)-4-hydroxy cyclopent-2-enyl esters comprising the steps of:
    Type: Application
    Filed: December 12, 2003
    Publication date: July 1, 2004
    Applicant: Clariant GmbH
    Inventor: Richard Wisdom
  • Black trisazo metal complex dyes
    Patent number: 6749674
    Abstract: Disclosed are metal complexes of trisazo dyes of the general formula 4 wherein R1 through R6 are as defined in the specification. The dyes are useful for dyeing and printing natural and synthetic fiber materials, recording fluids, especially for the inkjet process, liquid formulations for paper pulp dyeing, and also as colorants for electrophotographic toners, powder coatings and color filters including the dyes of the invention.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: June 15, 2004
    Assignee: Clariant GmbH
    Inventors: Josef Geisenberger, Andreas Wuzik
  • Flame-retardant thermoset compositions
    Publication number: 20040110878
    Abstract: The invention relates to flame-retardant thermoset compositions which comprise, as flame retardant, at least one phosphinic salt of the formula (I) and/or a diphosphinic salt of the formula (II) and/or polymers of these 1
    Type: Application
    Filed: September 24, 2003
    Publication date: June 10, 2004
    Applicant: Clariant GmbH
    Inventors: Susanne Knop, Martin Sicken, Sebastian Hoerold
  • Polymers with biocidal action, process for their preparation and their use
    Patent number: 6746711
    Abstract: Polymers with biocidal action, process for their preparation and their use The invention relates to polymers consisting essentially of structural units of the formula (1) in which R1 is a C1-C4-alkylene group R2, R3 independently of one another, are a C8-C12-alkyl or alkenyl group R4 is methyl or ethyl R5 is hydrogen or methyl and whose molecular weight is between 1000 and 100 000 g/mol, to intermediates for their preparation, to a process for their preparation, and to their use as biocidal coating composition for surfaces and textiles.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: June 8, 2004
    Assignee: Clariant GmbH
    Inventors: Gerhard Crass, Uwe Falk, Béla Iván, Gábor Erdödi, Árpád Máthe
  • Ferroelectric active matrix displays with wide operating temperature range
    Patent number: 6746731
    Abstract: The active-matrix display contains a chiral smectic liquid-crystal mixture comprising at least one compound of the formula (I) R1—(A1—M1)a—(A2—M2)b—A3—X—B1—(B2)c—R2  (I). where the symbols are as defined in the description.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: June 8, 2004
    Assignee: Clariant GmbH
    Inventors: Toshiaki Nonaka, Hans-Rolf Dübal, Rainer Wingen
  • Use of transition metal complexes having oxime ligands as bleach catalysts
    Patent number: 6746996
    Abstract: Transition metal complexes used as bleach catalysts of the formula (1) M(L)nXm  (1) where M is a metal atom from the group Mn, Fe, Co, Ni, Mo, W, L is a ligand of the formula R1R2C═N—O(H)z R1 is C1-C22-alkyl, C2-C22-alkenyl or C5-C24-aryl, R2 is H, C1-C22-alkyl, C2-C22-alkenyl, C5-C24-aryl or where z=0 or 1, X is a neutral or anion ligand from the group consisting of pyridines, imidazolines, methylimidazoles, picolines, lutidines, chloride, bromide, nitrate, perchlorate, citrate, hexafluorophosphate or anions of organic acids having C1-C22 carbon atoms, n is a number from 2 to 4 and m is a number from 0 to 4.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: June 8, 2004
    Assignee: Clariant GmbH
    Inventors: Gerd Reinhardt, Michael Seebach, Nicole Reichardt, Laszlo I. Simandi, Tatiana M. Simandi, Gabor Besenyei
  • Methods for producing foam from multiphase compositions
    Publication number: 20040105825
    Abstract: The invention relates to the use of multiphase compositions comprising
    Type: Application
    Filed: December 3, 2002
    Publication date: June 3, 2004
    Applicant: Clariant GmbH
    Inventor: Torsten Henning
  • Sparingly soluble alkali metal silicate
    Patent number: 6743766
    Abstract: The invention relates to a sparingly soluble alkali metal silicate which comprises alkali metal phyllosilicate in finely divided form in a non-phyllosilicatic alkali metal silicate environment of the formula x MI2O.y SiO2, in which MI is an alkali metal and y/x (1.9 to 500): 1; a process for its preparation and its use in detergents and cleaners.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 1, 2004
    Assignee: Clariant GmbH
    Inventors: Harald Bauer, Josef Holz, Guenther Schimmel, Alexander Tapper
  • Preparation of 1,3-di-halo-substituted benzene derivatives
    Publication number: 20040087816
    Abstract: A process for preparing 1,3-di-halo-substituted benzene derivatives (II) from 2,6-di-halo-substituted benzaldehydes (I) (where X1, X2 are each independently F, Cl, Br, and R1, R2, R3 are each independently H, halogen, OH, C1-C12-alkyl, CF3, CHO, C6-C14-aryl, Oalkyl, Oaryl, NO2) by reacting with an alkaline medium, which comprises initially charging the alkaline medium and metering in the 2,6-di-halo-substituted benzaldehyde (I) or initially charging the 2,6-di-halo-substituted benzaldehyde (I) and metering in the alkaline medium.
    Type: Application
    Filed: October 24, 2003
    Publication date: May 6, 2004
    Applicant: Clariant GmbH
    Inventors: Stefan Brand, Daniel Decker, Thomas Wessel
  • Polymeric phosphinic acids and salts thereof
    Patent number: 6727335
    Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) in which X is hydrogen or a 1/m metal of valency m, R1 and R2 are identical or different and are hydrogen, a carboxyl group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having 1 to 10 carbon atoms, phenyl, benzyl or alkyl-substituted aromatics, R3 and R4 are identical or different and are hydrogen or a vinyl group of the formula (VI) —CR1═CHR2  (VI) in which R1 and R2 have the abovementioned meaning, and {overscore (u)} is the average number of monomer units. The invention also relates to a process for the preparation of the abovementioned compounds and their use.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: April 27, 2004
    Assignee: Clariant GmbH
    Inventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz
  • Flame-retardant flexible polyurethane foams with high aging resistance
    Publication number: 20040077741
    Abstract: The invention relates to flame-retardant flexible polyurethane foams with high aging resistance, which comprise a mixture composed of hydroxyalkyl phosphonates and chlorinated phosphoric esters, and also to a process for preparing these fire-retardant flexible polyurethane foams.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 22, 2004
    Applicant: Clariant GmbH
    Inventors: Susanne Knop, Elke Huthmacher, Toni Nettersheim
  • Reduced-halogen-content flame-retardant mixtures for producing low-emission flexible polyurethane foams
    Publication number: 20040077755
    Abstract: The invention relates to mixtures composed of hydroxyalkyl phosphonates and chlorinated phosphoric esters, to their use, and to a process for their preparation.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 22, 2004
    Applicant: Clariant GmbH
    Inventors: Susanne Knop, Elke Huthmacher, Toni Nettersheim
  • Preparation of substituted aromatic compounds
    Publication number: 20040073032
    Abstract: A process for preparing compounds of the formula (II), 1
    Type: Application
    Filed: October 2, 2003
    Publication date: April 15, 2004
    Applicant: Clariant GmbH
    Inventors: Andreas Meudt, Michael Erbes, Klaus Forstinger
  • Explosives comprising modified copolymers of polyisobutylene and maleic anhydride as emulsifiers
    Patent number: 6719861
    Abstract: A terpolymer comprising monomer units derived from an olefin having more than 40 carbon atoms, maleic anhydride, and an alkylallyl polyglycol ether of the formula R—(OCH2CH2)nO—CH2—CH═CH2 where n=3-20 and R=C1-C4-alkyl.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 13, 2004
    Assignee: Clariant GmbH
    Inventors: Peter Klug, Ralf Bender
  • Homogeneous microemulsion comprising polyethylene glycol
    Publication number: 20040068050
    Abstract: A homogeneous, transparent microemulsion comprises
    Type: Application
    Filed: October 7, 2003
    Publication date: April 8, 2004
    Applicant: Clariant GmbH
    Inventors: Dennis Miller, Torsten Henning